Reference

US area code lookup: coverage, time zones and overlays

Every US area code in service, by state, from NANPA’s record: what it covers, its time zone, when it went into service and which codes share its area. 40 of them are written up in full — pages worth reading rather than generated stubs.

378 codes listed · 40 full guides

Full guides, by state

Alabama

483Central and southeast AlabamaOverlay

California

Connecticut

Massachusetts

Michigan

Missouri

816Kansas City, Missouri and north-western MissouriGeographic

New York

Ohio

614Columbus and Franklin CountyGeographic

Pennsylvania

Tennessee

729East Tennessee outside Knoxville: Chattanooga and the Tri-CitiesOverlay

Texas

281Houston and its suburbsOverlay

Utah

Every US area code by state

All 378 geographic codes in service in the United States and its territories, from NANPA’s area code report of October 19, 2026. A linked code has a full guide here. “Shares its area with” lists the overlay partners: codes that cover the same ground, so a number in any of them is just as local.

Alabama (7)

Code	Covers	Time zone	In service	Shares its area with
205	Birmingham, Tuscaloosa	Central	1947	659
251	Mobile County, Baldwin County, Bay Minette, Jackson, Brewton…	Central	2001	—
256	Huntsville, Decatur, Cullman, Gadsden, Madison, Florence, Sheffield…	Central	1998	938
334	Montgomery, Auburn, Dothan, Enterprise, Eufaula, Opelika, Phenix City…	Central	1995	483
483	Central and southeast Alabama	Central	2026	334
659	Birmingham, Tuscaloosa, and parts of western and central Alabama	Central	2019	205
938	Huntsville, Anniston, Cullman, Decatur, Florence, Fort Payne, Gadsden…	Central	2010	256

Alaska (1)

Code	Covers	Time zone	In service	Shares its area with
907	Whole of Alaska	Alaska	1957	—

American Samoa (1)

Code	Covers	Time zone	In service	Shares its area with
684	Whole of American Samoa	Samoa	2004	—

Arizona (5)

Code	Covers	Time zone	In service	Shares its area with
480	Phoenix metropolitan area	Mountain	1999	602, 623
520	Tucson, Nogales, Fort Huachuca, and most of southeastern Arizona	Mountain	1995	—
602	Phoenix metropolitan area	Mountain	1947	480, 623
623	Phoenix metropolitan area	Mountain	1999	480, 602
928	Arizona outside the Phoenix and Tucson metropolitan areas	Mountain	2001	—

Arkansas (4)

Code	Covers	Time zone	In service	Shares its area with
327	Texarkana, Jonesboro, Pine Bluff	Central	2024	870
479	Fort Smith, Fayetteville, Rogers, and most of northwestern Arkansas	Central	2002	—
501	Little Rock, Hot Springs, and much of central Arkansas, excluding Pine…	Central	1947	—
870	Texarkana, Jonesboro, Pine Bluff, and southern, eastern, and…	Central	1997	327

California (41)

Code	Covers	Time zone	In service	Shares its area with
209	Stockton, Modesto, and Merced, extending into central Yosemite National…	Pacific	1958	350
213	Downtown Los Angeles and surrounding neighbourhoods	Pacific	1947	323, 738
279	The Sacramento Metropolitan Area	Pacific	2018	916
310	Westside, South Bay and the Los Angeles coast	Pacific	1991	424
323	Central Los Angeles, outside downtown	Pacific	1998	213, 738
341	Coastal regions of the East Bay—Oakland, Fremont, Hayward, Richmond…	Pacific	2019	510
350	Stockton, Modesto, Merced, Tracy, San Andreas, and a part of central…	Pacific	2022	209
357	Fresno and the central San Joaquin Valley	Pacific	2025	559
369	Vallejo, Crescent City, Eureka, Redwoods National Park, Santa Rosa…	Pacific	2023	707
408	San Jose, Cupertino, Los Altos, Los Altos Hills, Los Gatos, Milpitas…	Pacific	1959	669
415	San Francisco and Marin County	Pacific	1947	628
424	The Westside, South Bay and Los Angeles coast	Pacific	2006	310
442	The desert and mountain south-east of California	Pacific	2009	760
510	Coastal regions of the East Bay: Oakland, Fremont, Hayward, Richmond…	Pacific	1991	341
530	Redding, Auburn, Chico, Davis, the California shore of Lake Tahoe…	Pacific	1997	837
559	Fresno, Hanford, Madera, Tulare, Visalia, and parts of the San Joaquin…	Pacific	1998	357
562	Downey, Long Beach, Whittier, Norwalk, La Habra, Lakewood, Pico Rivera…	Pacific	1997	—
619	San Diego and suburbs	Pacific	1982	858
626	San Gabriel Valley	Pacific	1997	—
628	San Francisco and Marin County	Pacific	2015	415
650	Daly City, South San Francisco, Palo Alto, Redwood City, Menlo Park…	Pacific	1997	—
657	Northern Orange County: Anaheim, Fullerton, Garden Grove, Huntington…	Pacific	2008	714
661	Northern Los Angeles County, including Lancaster, Palmdale, and Santa…	Pacific	1999	—
669	San Jose, Cupertino, Los Altos, Los Altos Hills, Los Gatos, Milpitas…	Pacific	2012	408
707	Vallejo, Crescent City, Eureka, Redwoods National Park, Santa Rosa…	Pacific	1959	369
714	Northern Orange County: Anaheim, Fullerton, Garden Grove, Huntington…	Pacific	1951	657
738	Nearly the entire city of Los Angeles outside of the San Fernando…	Pacific	2024	213, 323
747	The San Fernando Valley	Pacific	2009	818
760	The desert and mountain south-east of California	Pacific	1997	442
805	Ventura, San Luis Obispo, and Santa Barbara Counties	Pacific	1957	820
818	San Fernando Valley	Pacific	1984	747
820	Ventura, San Luis Obispo, and Santa Barbara Counties	Pacific	2018	805
831	Monterey County, including Salinas and Monterey	Pacific	1998	—
837	Redding, Auburn, Chico, Davis, the California shore of Lake Tahoe…	Pacific	2025	530
840	Southwestern San Bernardino County and a small portion of Los Angeles…	Pacific	2021	909
858	San Diego and suburbs	Pacific	1999	619
909	Southwestern San Bernardino County and a small portion of Los Angeles…	Pacific	1992	840
916	The Sacramento Metropolitan Area	Pacific	1947	279
925	Inland regions of the East Bay: Livermore, Concord, Pleasant Hill…	Pacific	1998	—
949	Southern Orange County: Irvine, Lake Forest, Mission Viejo, Corona del…	Pacific	1998	—
951	Western Riverside County, including Riverside, Corona, Hemet, Lake…	Pacific	2004	—

Colorado (6)

Code	Covers	Time zone	In service	Shares its area with
303	Denver, Boulder, Longmont, Aurora, Golden, Limon, Littleton, Centennial	Mountain	1947	720, 983
719	Colorado Springs, Pueblo, Florence, Leadville, Limon, Trinidad, La…	Mountain	1988	—
720	Denver, Boulder, Longmont, Aurora, Golden, Limon, Centennial	Mountain	1998	303, 983
748	Western and northern parts of Colorado	Mountain	2025	970
970	Grand Junction, Aspen, Durango, Estes Park, Fort Collins, Frisco…	Mountain	1995	748
983	Denver, Colorado	Mountain	2022	303, 720

Connecticut (4)

Code	Covers	Time zone	In service	Shares its area with
203	South-western Connecticut	Eastern	1947	475
475	Bridgeport, Danbury, New Haven, Waterbury, and southwestern Connecticut	Eastern	2009	203
860	Northern and eastern Connecticut	Eastern	1995	959
959	Northern and eastern Connecticut	Eastern	2014	860

Delaware (1)

Code	Covers	Time zone	In service	Shares its area with
302	Whole of Delaware	Eastern	1947	—

District of Columbia (2)

Code	Covers	Time zone	In service	Shares its area with
202	Washington, D.C.	Eastern	1947	771
771	Washington, D.C.	Eastern	2021	202

Florida (23)

Code	Covers	Time zone	In service	Shares its area with
239	Lee County, Collier County, the mainland part of Monroe County…	Eastern	2002	—
305	Whole of Florida	Eastern	1947	645, 786
321	Orlando, Cocoa, Melbourne, Rockledge, Titusville, St. Cloud, and…	Eastern	1999	—
324	Jacksonville, St. Augustine, Starke, and most of northeastern Florida	Eastern	2024	904
352	Gainesville, Ocala, Inverness, Dunnellon, and a part of central Florida	Eastern	1995	—
386	Daytona Beach, Lake City, Live Oak, Crescent City, and parts of…	Eastern	2001	—
407	Orlando, Sanford, St. Cloud, Kissimmee, and a part of east-central…	Eastern	1988	321, 689
448	The Florida Panhandle	Eastern and Central	2021	850
561	Palm Beach County, including Palm Beach, West Palm Beach, Boca Raton…	Eastern	1996	728
645	Miami-Dade County and the Florida Keys	Eastern	2023	305, 786
656	Whole of Florida	Eastern	2022	813
689	Orlando, Sanford, St. Cloud, Kissimmee, and a part of east-central…	Eastern	2019	321, 407
727	Whole of Florida	Eastern	1998	—
728	Palm Beach County, including Palm Beach, West Palm Beach, Boca Raton…	Eastern	2023	561
754	Broward County	Eastern	2001	954
772	Fort Pierce, Port Saint Lucie, Sebastian, Stuart, Vero Beach, all of…	Eastern	2002	—
786	Miami-Dade County and the Florida Keys	Eastern	1998	305, 645
813	Whole of Florida	Eastern	1953	656
850	Appalachicola, Pensacola, Tallahassee, Quincy, Panama City, Naval Air…	Eastern and Central	1997	448
863	Lakeland, Bartow, Sebring, Winter Haven in south central Florida	Eastern	1999	—
904	Jacksonville, St. Augustine, Starke, and most of northeastern Florida	Eastern	1965	324
941	Gulf Coast immediately south of Tampa Bay: all of Manatee County…	Eastern	1995	—
954	Whole of Florida	Eastern	1995	754

Georgia (10)

Code	Covers	Time zone	In service	Shares its area with
229	Albany, Valdosta, Bainbridge, Americus, Fitzgerald	Eastern	2000	—
404	Atlanta and the Atlanta metropolitan area inside of the Interstate 285…	Eastern	1947	470, 678, 943
470	Atlanta metropolitan area	Eastern	2010	404, 678, 770, 943
478	Macon, Warner Robins, Swainsboro, Milledgeville, Perry, and a part of…	Eastern	2000	—
678	Metro Atlanta	Eastern	1998	404, 470, 770, 943
706	Athens, Augusta, Columbus, Calhoun, Dalton, Rome, and much of…	Eastern	1992	762
762	Athens, Augusta, Columbus, Calhoun, Dalton, Rome, and much of…	Eastern	2006	706
770	Marietta, Carrollton, Gainesville, Jonesboro, Lawrenceville, Roswell…	Eastern	1995	470, 678, 943
912	Savannah, Statesboro, Vidalia, Waycross, Brunswick, Douglas, and…	Eastern	1954	565
943	Metro Atlanta	Eastern	2022	404, 470, 678, 770

Guam (1)

Code	Covers	Time zone	In service	Shares its area with
671	Whole of Guam	Chamorro	1997	—

Hawaii (1)

Code	Covers	Time zone	In service	Shares its area with
808	Whole of Hawaii	Hawaii-Aleutian	1957	—

Idaho (2)

Code	Covers	Time zone	In service	Shares its area with
208	Whole of Idaho	Mountain and Pacific	1947	986
986	Whole of Idaho	Pacific	2017	208

Illinois (17)

Code	Covers	Time zone	In service	Shares its area with
217	Springfield, Champaign, Decatur, Urbana, Lincoln	Central	1947	447
224	North and northwest suburbs of Chicago	Central	2002	847
309	Peoria, Bloomington, Moline, Rock Island, Galesburg	Central	1957	861
312	Downtown Chicago	Central	1947	872
331	Aurora, Naperville, Oswego	Central	2007	630
447	Springfield, Champaign, Decatur, Urbana, Lincoln, and parts of central…	Central	2021	217
464	Western and southern portions of suburban Cook County and far eastern…	Central	2022	708
618	Carbondale, Alton, Belleville, Cahokia, Centralia, Edwardsville…	Central	1947	730
630	Western suburbs of Chicago, including DuPage, central and southern…	Central	1996	331
708	Western and southern portions of suburban Cook County and far eastern…	Central	1989	464
730	Carbondale, Alton, Belleville, Cahokia, Centralia, Edwardsville…	Central	2023	618
773	City of Chicago, excluding downtown	Central	1996	872
779	Much of northern Illinois outside Chicago and its immediate surrounding…	Central	2007	815
815	Much of northern Illinois outside Chicago and its immediate surrounding…	Central	1947	779
847	North and northwest suburbs of Chicago, including Lake, northern Cook…	Central	1996	224
861	Peoria, Bloomington, Moline, Rock Island, Galesburg	Central	2023	309
872	Chicago	Central	2009	312, 773

Indiana (8)

Code	Covers	Time zone	In service	Shares its area with
219	Gary area	Eastern and Central	1948	—
260	Fort Wayne, New Haven, Decatur, Angola, Huntington, Wabash, and most of…	Eastern	2002	—
317	Indianapolis and immediate metro area including Carmel, Fishers…	Eastern	1947	463
463	Indianapolis and immediate metro area including Carmel, Fishers…	Eastern	2016	317
574	South Bend, Elkhart, Goshen, Logansport, and most of north-central…	Eastern and Central	2002	—
765	Kokomo, Lafayette, Marion, Muncie, Richmond, West Lafayette, and most…	Eastern	1997	—
812	Southern Indiana	Eastern and Central	1947	930
930	Southern Indiana, including Bloomington, Evansville, Terre Haute…	Eastern	2015	812

Iowa (5)

Code	Covers	Time zone	In service	Shares its area with
319	Cedar Rapids, Waterloo, Burlington, Iowa City	Central	1947	—
515	Des Moines, Ames, Fort Dodge, Jefferson, Indianola, and most of…	Central	1947	—
563	Davenport, Dubuque, Clinton, Bettendorf, and most of eastern and…	Central	2001	—
641	Mason City, Oskaloosa, Creston, Pella, Ottumwa, Britt, Clear Lake…	Central	2000	—
712	Sioux City, Council Bluffs, Denison, and most of western Iowa	Central	1947	—

Kansas (4)

Code	Covers	Time zone	In service	Shares its area with
316	Wichita metro, McConnell AFB, Cheney, El Dorado, Mulvane, Newton	Central	1947	—
620	Southern Kansas not including the Wichita Metropolitan Area	Central and Mountain	2001	—
785	Topeka, Salina, Colby, Lawrence, Manhattan, and all of northern and…	Central and Mountain	1997	—
913	The Kansas side of the Kansas City metro	Central	1947	—

Kentucky (5)

Code	Covers	Time zone	In service	Shares its area with
270	Owensboro, Paducah, Bowling Green, Hopkinsville, Henderson…	Eastern and Central	1999	364
364	Owensboro, Paducah, Bowling Green, Hopkinsville, Henderson…	Eastern and Central	2014	270
502	Louisville, Frankfort, Shelbyville, Bardstown, and most of…	Eastern	1947	761
606	Ashland, Pikeville, Hazard, Somerset, London, Corbin, Maysville, and…	Eastern and Central	1955	—
859	Lexington, Richmond, Danville, Covington, Florence, and northernmost…	Eastern	2000	—

Louisiana (6)

Code	Covers	Time zone	In service	Shares its area with
225	Baton Rouge	Central	1998	—
318	Shreveport–Bossier City, Monroe, Alexandria, Fisher, Tallulah, and most…	Central	1957	457
337	Lafayette, Lake Charles, Leesville, New Iberia, Opelousas, and most of…	Central	1999	—
457	Northern and central Louisiana	Central	2025	318
504	New Orleans metropolitan area	Central	1947	—
985	Houma, Slidell, and southeastern Louisiana excluding New Orleans	Central	2001	—

Maine (1)

Code	Covers	Time zone	In service	Shares its area with
207	Whole of Maine	Eastern	1947	—

Maryland (6)

Code	Covers	Time zone	In service	Shares its area with
227	Washington, D.C., suburbs	Eastern	2023	240, 301
240	Silver Spring	Eastern	1997	227, 301
301	Silver Spring	Eastern	1947	240, 227
410	Baltimore, Annapolis, Columbia, and all counties and cities which touch…	Eastern	1991	443, 667
443	Baltimore, Annapolis, Columbia, and all counties and cities which touch…	Eastern	1997	410, 667
667	Whole of Maryland	Eastern	2012	410, 443

Massachusetts (9)

Code	Covers	Time zone	In service	Shares its area with
339	Suburbs of Boston	Eastern	2001	781
351	North and north-central Massachusetts	Eastern	2001	978
413	Western Massachusetts	Eastern	1947	—
508	Southeastern Massachusetts	Eastern	1988	774
617	Boston and the inner suburbs	Eastern	1947	857
774	Southeastern Massachusetts	Eastern	2001	508
781	Canton, Hanson, Lincoln, Nahant, Plympton, Revere, Stoughton…	Eastern	1997	339
857	Boston and the inner suburbs	Eastern	2001	617
978	North and north-central Massachusetts	Eastern	1997	351

Michigan (13)

Code	Covers	Time zone	In service	Shares its area with
231	Muskegon, Traverse City, Ludington, Petoskey	Eastern	1999	—
248	Oakland County	Eastern	1997	947
269	Battle Creek, Kalamazoo, Benton Harbor, Allegan, Hastings, St. Joseph…	Eastern	2002	—
313	Detroit and the Downriver communities	Eastern	1947	679
517	Lansing, Jackson, Charlotte, Deerfield, Addison, and most of…	Eastern	1947	—
586	Macomb County	Eastern	2001	—
616	Grand Rapids, Greenville, Holland, Ionia, Zeeland, and most of…	Eastern	1947	—
679	Detroit and the Downriver communities	Eastern	2025	313
734	Ann Arbor, Hell, Monroe, Plymouth, Romulus, Wayne, Ypsilanti, and the…	Eastern	1997	679
810	Port Huron, Flint, Lapeer, and the Michigan "Thumb"	Eastern	1993	—
906	Upper Peninsula: Sault Ste. Marie, Escanaba, Houghton, Iron Mountain…	Eastern and Central	1961	—
947	Oakland County	Eastern	2002	248
989	Alpena, Mt. Pleasant, Bay City, Saginaw, Midland, Owosso, and a part of…	Eastern	2001	—

Minnesota (8)

Code	Covers	Time zone	In service	Shares its area with
218	Duluth, Moorhead, Thief River Falls, Bemidji, Brainerd, International…	Central	1947	—
320	St. Cloud, Alexandria, Morris, Hutchinson, Sandstone, Appleton, Willmar	Central	1996	—
507	Rochester, Mankato, Austin, Marshall, Winona, and most of southern…	Central	1954	924
612	Minneapolis, Fort Snelling, St. Anthony, and Richfield	Central	1947	—
651	St. Paul, Eagan, Lindstrom, Red Wing, Hastings, Stillwater, and a part…	Central	1998	—
763	Brooklyn Park, Plymouth, Maple Grove, Monticello, Elk River, Fridley…	Central	2000	—
924	Rochester, Mankato, Austin, Marshall, Winona, and most of southern…	Central	2024	507
952	Bloomington, Eden Prairie, Edina, Minnetonka, Chaska, and the southwest…	Central	2000	—

Mississippi (5)

Code	Covers	Time zone	In service	Shares its area with
228	Gulfport, Biloxi, Pascagoula, Bay St. Louis, and southmost Mississippi	Central	1997	—
471	Tupelo, Columbus, Corinth, Greenville, Greenwood, Starkville, and most…	Central	2026	662
601	Jackson, Hattiesburg, Meridian, Natchez, Vicksburg, and most of central…	Central	1947	769
662	Tupelo, Columbus, Corinth, Greenville, Greenwood, Starkville, and most…	Central	1999	471
769	Jackson, Hattiesburg, Meridian, Natchez, Vicksburg, and most of central…	Central	2005	601

Missouri (9)

Code	Covers	Time zone	In service	Shares its area with
235	Columbia, Jefferson City, Hannibal, Cape Girardeau, Farmington, Lake of…	Central	2024	573
314	St. Louis, St. Louis County, Florissant, Crestwood, Hazelwood…	Central	1947	557
417	Springfield, Joplin, Branson, Lamar, Lebanon, and most of southwestern…	Central	1950	—
557	St. Louis, St. Louis County, Florissant, Crestwood, Hazelwood…	Central	2022	314
573	Columbia, Jefferson City, Hannibal, Cape Girardeau, Farmington, Lake of…	Central	1996	235
636	St. Charles, Chesterfield, Union, Troy, and parts of east-central…	Central	1999	—
660	Sedalia, Kirksville, Maryville, Mexico, Whiteman Air Force Base, and a…	Central	1997	—
816	Kansas City, Missouri and north-western Missouri	Central	1947	975
975	Kansas City, St Joseph, Independence, Harrisonville, and parts of…	Central	2023	816

Montana (1)

Code	Covers	Time zone	In service	Shares its area with
406	Whole of Montana	Mountain	1947	—

Nebraska (3)

Code	Covers	Time zone	In service	Shares its area with
308	North Platte, Scottsbluff, McCook, Kearney, Grand Island	Central and Mountain	1955	—
402	Omaha, Lincoln, Norfolk, Superior, and most of eastern Nebraska	Central	1947	531
531	Omaha, Lincoln, Norfolk, Superior, and most of eastern Nebraska	Central	2011	402

Nevada (3)

Code	Covers	Time zone	In service	Shares its area with
702	Almost all of Clark County, including all of the Las Vegas Valley…	Pacific	1947	725
725	Almost all of Clark County, including all of the Las Vegas Valley…	Pacific	2014	702
775	Carson City, Reno, Elko, Ely, Sparks, Winnemucca, Great Basin National…	Pacific (Mountain in West Wendover)	1998	—

New Hampshire (1)

Code	Covers	Time zone	In service	Shares its area with
603	Whole of New Hampshire	Eastern	1947	—

New Jersey (10)

Code	Covers	Time zone	In service	Shares its area with
201	Bergen County and Hudson County	Eastern	1947	551
551	Bergen County and Hudson County	Eastern	2001	201
609	Trenton, Atlantic City, Princeton, McGuire Air Force Base, Fort Dix…	Eastern	1957	640
640	Trenton, Atlantic City, Princeton, and most of central & southeastern…	Eastern	2018	609
732	New Brunswick, Lakewood, Neptune, Fort Dix, and most of east-central…	Eastern	1997	848
848	New Brunswick, Lakewood, Neptune, Fort Dix, and most of east-central…	Eastern	2001	732
856	Cherry Hill, Camden, Millville, Vineland, and most of southwestern New…	Eastern	1999	—
862	Northernmost part	Eastern	2001	973
908	Alpha, Washington, Elizabeth, Warren, Plainfield, and west-central New…	Eastern	1990	—
973	Newark, Paterson, and most of northeastern New Jersey	Eastern	1997	862

New Mexico (2)

Code	Covers	Time zone	In service	Shares its area with
505	Albuquerque, Santa Fe, Farmington, Gallup, all of northwestern New…	Mountain	1947	—
575	Las Cruces, Roswell, Carlsbad Caverns National Park, Socorro, Taos, and…	Mountain	2007	—

New York (23)

Code	Covers	Time zone	In service	Shares its area with
212	Manhattan, New York City	Eastern	1947	332, 646, 917
315	Syracuse, Utica, Watertown	Eastern	1947	680
329	Dutchess, Orange, Putnam, Rockland, Sullivan, and Ulster counties	Eastern	2023	845
332	Manhattan, New York City	Eastern	2017	212, 646, 917
347	Brooklyn, Queens, the Bronx and Staten Island	Eastern	1999	465, 718, 917, 929
363	Nassau County, including Hempstead and Mineola	Eastern	2023	516
465	New York City: The Bronx, Brooklyn, Queens, Staten Island, and Marble…	Eastern	2026	347, 718, 917, 929
516	Nassau County, including Hempstead and Mineola	Eastern	1951	363
518	Albany, Schenectady, Plattsburgh, Saranac Lake, Lake George, Westport…	Eastern	1947	838
585	Rochester, Batavia, and much of western New York	Eastern	2001	—
607	Binghamton, Elmira, Cortland, Norwich, Ithaca, and most of…	Eastern	1954	—
624	Buffalo, Niagara Falls, Olean, and parts of western New York	Eastern	2023	716
631	Suffolk County on Long Island	Eastern	1999	934
646	Manhattan, New York City	Eastern	1999	212, 332, 917
680	Syracuse, Utica, Watertown, and north-central New York	Eastern	2017	315
716	Buffalo, Niagara Falls, Olean, and parts of western New York	Eastern	1947	624
718	Brooklyn, Queens, the Bronx and Staten Island	Eastern	1984	347, 465, 917, 929
838	Albany, Schenectady, Plattsburgh, Saranac Lake, Lake George, Westport…	Eastern	2017	518
845	Dutchess, Orange, Putnam, Rockland, Sullivan, and Ulster counties	Eastern	2000	329
914	Westchester County	Eastern	1947	—
917	All five boroughs, New York City	Eastern	1992	212, 332, 347, 465, 646, 718, 929
929	Brooklyn, Queens, the Bronx and Staten Island	Eastern	2011	347, 465, 718, 917
934	Suffolk County on Long Island	Eastern	2016	631

North Carolina (10)

Code	Covers	Time zone	In service	Shares its area with
252	Greenville, New Bern, Elizabeth City, Kinston, Outer Banks, Rocky Mount	Eastern	1998	—
336	The Piedmont Triad, Wilkesboro, Roxboro, and most of northwestern North…	Eastern	1997	743
472	Fayetteville, Wilmington, Fort Bragg, Seymour Johnson Air Force Base…	Eastern	2022	910
704	Charlotte, Concord, Gastonia, Salisbury, and much of south-central…	Eastern	1947	980
743	The Piedmont Triad, Wilkesboro, Roxboro, and most of northwestern North…	Eastern	2016	336
828	Asheville, Franklin, Hickory, Murphy, Waynesville, and parts of western…	Eastern	1998	—
910	Fayetteville, Wilmington, Fort Bragg, Seymour Johnson Air Force Base…	Eastern	1993	472
919	The Research Triangle, including Raleigh, the state capital city	Eastern	1954	984
980	Charlotte, Concord, Gastonia, Salisbury, and much of south-central…	Eastern	2001	704
984	The Research Triangle, including Raleigh, the state capital city	Eastern	2012	919

North Dakota (1)

Code	Covers	Time zone	In service	Shares its area with
701	Whole of North Dakota	Central and Mountain	1947	—

Northern Mariana Islands (1)

Code	Covers	Time zone	In service	Shares its area with
670	Whole of Northern Mariana Islands	Chamorro	1997	—

Ohio (15)

Code	Covers	Time zone	In service	Shares its area with
216	Cleveland area	Eastern	1947	—
220	Suburban Columbus	Eastern	2015	740
234	Akron, Canton, Youngstown, Warren	Eastern	2000	330
283	Cincinnati, Middletown, Hamilton, Lebanon, and parts of southern and…	Eastern	2023	513
326	Dayton, Springfield, and southwestern Ohio north and east of the…	Eastern	2020	937
330	Akron, Canton, Youngstown, Warren, and most of northeastern Ohio	Eastern	1996	234
380	Columbus and Franklin County	Eastern	2016	614
419	Toledo area and most of northwestern Ohio	Eastern	1947	567
436	Surrounding Cleveland on three sides, including: Elyria, Lorain…	Eastern	2024	440
440	Surrounding Cleveland on three sides, including: Elyria, Lorain…	Eastern	1997	436
513	Cincinnati, Middletown, Hamilton, Lebanon, and parts of southern and…	Eastern	1947	283
567	Toledo area and most of northwestern Ohio	Eastern	2002	419
614	Columbus and Franklin County	Eastern	1947	380
740	Southeastern and central parts of Ohio	Eastern	1997	220
937	Dayton, Springfield, and southwestern Ohio north and east of the…	Eastern	1996	326

Oklahoma (5)

Code	Covers	Time zone	In service	Shares its area with
405	Oklahoma City, Stillwater, Edmond, Norman, Shawnee, and most of central…	Central	1947	572
539	Tulsa, Bartlesville, McAlester, Muskogee, Henryetta, and northeastern…	Central	2011	918
572	Oklahoma City, Stillwater, Edmond, Norman, Shawnee, and most of central…	Central	2021	405
580	Ponca City, Ada, Ardmore, Enid, Lawton, Elk City, and most of southern…	Central	1997	—
918	Tulsa, Bartlesville, McAlester, Muskogee, Henryetta, and northeastern…	Central	1953	539

Oregon (4)

Code	Covers	Time zone	In service	Shares its area with
458	Eugene, Medford, Bend, Pendleton, Corvallis, Ontario, Burns	Mountain and Pacific	2010	541
503	Portland, Salem, Hillsboro, Beaverton, St. Helens, Tillamook, Astoria…	Pacific	1947	971
541	Eugene, Bend, Corvallis, Medford, Pendleton, and all of Oregon except…	Mountain and Pacific	1995	458
971	Portland, Salem, Hillsboro, Beaverton, and most of northwestern Oregon	Pacific	2000	503

Pennsylvania (15)

Code	Covers	Time zone	In service	Shares its area with
215	Philadelphia area, including all its suburbs and parts of surrounding…	Eastern	1947	267, 445
223	South-central Pennsylvania	Eastern	2017	717
267	Philadelphia and surrounding suburban area	Eastern	1999	215, 445
272	The Wyoming Valley, including Scranton and Wilkes-Barre, Bloomsburg…	Eastern	2013	570
412	Pittsburgh region	Eastern	1947	878
445	Philadelphia, Pennsylvania	Eastern	2018	215, 267
484	Chester, Lehigh Valley, Norristown, Reading	Eastern	1999	610, 835
570	The Wyoming Valley, including Scranton and Wilkes-Barre	Eastern	1998	272
582	North-western and central Pennsylvania	Eastern	2021	814
610	Chester, Lehigh Valley, Norristown, Reading	Eastern	1994	484, 835
717	South-central Pennsylvania	Eastern	1947	223
724	Washington, Greensburg, Indiana, New Castle, Uniontown, Butler, and the…	Eastern	1998	878
814	North-western and central Pennsylvania	Eastern	1947	582
835	Chester, Lehigh Valley, Norristown, Reading	Eastern	2022	484, 610
878	Pittsburgh	Eastern	2001	412, 724

Puerto Rico (2)

Code	Covers	Time zone	In service	Shares its area with
787	Whole of Puerto Rico	Atlantic	1996	939
939	Whole of Puerto Rico	Atlantic	2001	787

Rhode Island (1)

Code	Covers	Time zone	In service	Shares its area with
401	Whole of Rhode Island	Eastern	1947	—

South Carolina (6)

Code	Covers	Time zone	In service	Shares its area with
803	Columbia, Rock Hill, Sumter, Aiken, and most of central South Carolina	Eastern	1947	839
821	The Upstate, including Greenville, Spartanburg, Anderson, Clemson, and…	Eastern	2024	864
839	Columbia, Rock Hill, Sumter, Aiken, and most of central South Carolina	Eastern	2020	803
843	Charleston, Florence, Hilton Head Island, Myrtle Beach, Charleston Air…	Eastern	1998	854
854	Charleston, Florence, Hilton Head Island, Myrtle Beach, Charleston Air…	Eastern	2015	843
864	The Upstate, including Greenville, Spartanburg, Anderson, Clemson, and…	Eastern	1995	821

South Dakota (1)

Code	Covers	Time zone	In service	Shares its area with
605	Whole of South Dakota	Central and Mountain	1947	—

Tennessee (8)

Code	Covers	Time zone	In service	Shares its area with
423	East Tennessee in two parts: the Tri-Cities in the north-east and Chattanooga in the south-east	Eastern and Central	1995	729
615	Northern Middle Tennessee including Nashville	Central	1954	629
629	Middle Tennessee, including Nashville and surrounding area	Central	2015	615
729	East Tennessee outside Knoxville: Chattanooga and the Tri-Cities	Eastern and Central	2025	423
731	Most of West Tennessee, excluding Metropolitan Memphis and Shelby…	Central	2001	—
865	Knoxville, Alcoa, Athens, Clinton, Crossville, Dayton, Gatlinburg…	Eastern	1999	—
901	Memphis, Covington, Germantown, Somerville, and extreme southwestern…	Central	1947	—
931	Southern Middle Tennessee	Eastern and Central	1997	—

Texas (29)

Code	Covers	Time zone	In service	Shares its area with
210	San Antonio metropolitan area	Central	1992	726
214	Dallas metropolitan area	Central	1947	469, 945, 972
254	Waco, Killeen, Temple, Belton, and Stephenville	Central	1997	—
281	Houston and its suburbs	Central	1996	346, 621, 713, 832
325	Abilene, San Angelo, Sweetwater, Snyder	Central	2003	—
346	Houston area	Central	2014	281, 621, 713, 832
361	Corpus Christi, Victoria, George West, and much of south Texas	Central	1999	—
409	Beaumont, Galveston, Orange, Port Arthur, and Texas City	Central	1982	—
430	Tyler, Sherman, Longview, Marshall, Palestine, Jacksonville, Carthage…	Central	2003	903
432	Midland, Odessa, Big Spring, Alpine, Fort Stockton	Central	2003	—
469	Dallas metropolitan area	Central	1999	214, 945, 972
512	Austin, San Marcos, and parts of central Texas	Central	1947	737
621	Houston area	Central	2025	281, 346, 713, 832
682	Fort Worth, Arlington, Grand Prairie, Grandview, Weatherford	Central	2000	817
713	Houston area	Central	1947	281, 346, 621, 832
726	San Antonio metropolitan area	Central	2017	210
737	Austin and suburbs	Central	2013	512
806	Lubbock, Amarillo, Canadian, Canyon, Dalhart, and the entire Texas…	Central	1957	—
817	Fort Worth, Arlington, Grand Prairie, Grandview, Weatherford	Central	1953	682
830	Del Rio, Kerrville, Eagle Pass, Fredericksburg, New Braunfels, and a…	Central	1997	—
832	Houston Metropolitan Area and suburbs	Central	1999	281, 346, 713
903	Tyler, Sherman, Longview, Marshall, Palestine, Jacksonville, Carthage…	Central	1990	430
915	Whole of Texas	Central and Mountain	1947	—
936	Nacogdoches, Lufkin, Conroe, Huntsville, Center, and Southeast Texas	Central	2000	—
940	The area immediately north of the Dallas–Fort Worth metroplex: Denton…	Central	1997	—
945	Dallas–Fort Worth metroplex	Central	2021	214, 469, 972
956	Laredo, Harlingen, Brownsville, McAllen, and southmost Texas	Central	1997	—
972	Dallas metropolitan area	Central	1996	214, 469, 945
979	Wharton, Bryan, Bay City, College Station, Lake Jackson, La Grange, and…	Central	2000	—

U.S. Virgin Islands (1)

Code	Covers	Time zone	In service	Shares its area with
340	Whole of U.S. Virgin Islands	Atlantic	1997	—

Utah (3)

Code	Covers	Time zone	In service	Shares its area with
385	The Wasatch Front	Mountain	2009	801
435	Most of Utah outside the Salt Lake City, Ogden, and Provo metropolitan…	Mountain	1997	—
801	The Wasatch Front	Mountain	1947	385

Vermont (1)

Code	Covers	Time zone	In service	Shares its area with
802	Whole of Vermont	Eastern	1947	—

Virginia (10)

Code	Covers	Time zone	In service	Shares its area with
276	Bristol, Abingdon, Wytheville, Martinsville, Bluefield, Big Stone Gap…	Eastern	2001	—
434	Charlottesville, Lynchburg, Danville, and south-central Virginia	Eastern	2001	—
540	Fredericksburg, Roanoke, Blacksburg, Harrisonburg, Lexington, Staunton…	Eastern	1995	826
571	Washington, D.C. suburbs, including Arlington and Alexandria	Eastern	2000	703
686	The Richmond Metropolitan Area, including Petersburg and the Northern…	Eastern	2024	804
703	Northern Virginia: mostly the suburbs of Washington, D.C., including…	Eastern	1947	571
757	Part of Hampton Roads and the Eastern Shore of Virginia	Eastern	1996	948
804	The Richmond Metropolitan Area, including Petersburg and the Northern…	Eastern	1973	686
826	Fredericksburg, Roanoke, Blacksburg, Harrisonburg, Lexington, Staunton…	Eastern	2022	540
948	Part of Hampton Roads and the Eastern Shore of Virginia	Eastern	2022	757

Washington (6)

Code	Covers	Time zone	In service	Shares its area with
206	Seattle area	Pacific	1947	564
253	Tacoma, McChord Air Force Base, Fort Lewis, Lakewood, Auburn, Puyallup…	Pacific	1997	—
360	Olympia, Vancouver, Bellingham, Bremerton, Port Angeles, Aberdeen, and…	Pacific	1995	564
425	Northern and eastern suburbs of Seattle	Pacific	1997	—
509	Whole of Washington	Pacific	1957	—
564	Olympia, Vancouver, Bellingham, Bremerton, Port Angeles, Aberdeen, and…	Pacific	2017	206, 360

West Virginia (2)

Code	Covers	Time zone	In service	Shares its area with
304	Whole of West Virginia	Eastern	1947	681
681	Whole of West Virginia	Eastern	2009	304

Wisconsin (8)

Code	Covers	Time zone	In service	Shares its area with
262	Racine, Kenosha, Menomonee Falls, Waukesha, and most of southeastern…	Central	1999	—
274	Appleton, Sheboygan, Oshkosh, Green Bay, Manitowoc, Marquette, Fond du…	Central	2023	920
353	Madison, La Crosse, Platteville, Beloit, and most of southwestern…	Central	2023	608
414	Milwaukee County includes cities of Milwaukee, West Allis, Oak Creek…	Central	1947	—
534	Wausau, Eau Claire, Rhinelander, and most of northern Wisconsin	Central	2010	715
608	Madison, La Crosse, Platteville, Beloit, and most of southwestern…	Central	1955	353
715	Wausau, Eau Claire, Rhinelander, and most of northern Wisconsin	Central	1947	534
920	Appleton, Sheboygan, Oshkosh, Green Bay, Manitowoc, Marquette, Fond du…	Central	1997	274

Wyoming (1)

Code	Covers	Time zone	In service	Shares its area with
307	Whole of Wyoming	Mountain	1947	—

Sources: NANPA area code report (npa_report.csv, file dated October 19, 2026) for every code’s state, in-service date, time zone and overlay complex; Wikipedia’s list of North American Numbering Plan area codes (read October 21, 2026) for the one-line description of the codes not written up here. A linked code has a full guide with its own sources.

What an area code actually is

An area code — a Numbering Plan Area, or NPA, in the industry’s own language — is the first three digits of a North American phone number, and it identifies a region rather than a town. Some cover a single dense borough; others cover most of a state.

When a region runs short of numbers there are two fixes. A split carves off part of the territory and gives it a new code, which forces everyone in that part to change their number. An overlay layers a second code over the same ground, so existing numbers are untouched and only new lines get the new code. Overlays have been the standard answer since 1992, which is why most large metros now have three or four codes covering identical streets.

That is also why an overlay code is not “less local” than the original. It covers the same place. The only difference is when it arrived — though in a handful of cities, that difference has become a signal in itself.

The three digits after the area code are the exchange, or NXX; together they are the NPA-NXX that every lookup tool keys on. NPA-NXX explained covers the format digit by digit, and the newest US area codes tracks which codes went into service this year and which are next. Some three-digit codes that turn up on caller ID are not area codes at all; codes that are not in service lists them, and US area codes running out ranks every region by the date NANPA expects it to run out of numbers, with what is being done about it.

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