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Area Code Listing, by State/Country

The cities listed with each area code are the major cities for that area code; this originated as the city in which the switch computer for that area code is located, but is no longer the case. The cities listed are not intended to be exhaustive.

This list is updated only when an Internet user informs me of a (pending) change. There are no special data sources from which this is generated -- just the cooperation of the Net. I do not have anything to do with phone companies etc; I do research in computer security, and this is just a random service for/of/by the Internet community.

See also the listing by number and the NANPA data. There are also several other listings on the web.
Area CodeRegionTimezone Offset (from UTC)Description
211---- Local community info / referral services
242---5 Bahamas
246---4 Barbados
264---4 Anguilla (split from 809)
268---4 Antigua and Barbuda (split from 809)
284---4 British Virgin Islands (split from 809)
311---- Reserved for special applications
345---5 Cayman Islands
411---- Reserved for special applications
441---4 Bermuda (part of what used to be 809)
456---- Inbound International
473---4 Grenada ("new" -- split from 809)
500---- Personal Communication Service
511---- Nationwide travel information
555--? Reserved for directory assistance applications
600---- Canadian Services
611---- Reserved for special applications
649---5 Turks & Caicos Islands
664---4 Montserrat (split from 809)
684---11 American Samoa
700---- Interexchange Carrier Services
710--? US Government
711---- Telecommunications Relay Services
758---4 St. Lucia (split from 809)
767---4 Dominica (split from 809)
784---4 St. Vincent & Grenadines (split from 809)
800--? US/Canada toll free (see 888, 877, 866, 855, 844, 833, 822)
809---4 Dominican Republic (see splits 264, 268, 284, 340, 441, 473, 664, 758, 767, 784, 868, 876; overlay 829)
811---- Reserved for special applications
822--? US/Canada toll free (proposed, may not be in use yet)
829---4 Dominican Republic (perm 1/31/05; mand 8/1/05; overlaid on 809)
833--? US/Canada toll free (proposed, may not be in use yet)
844--? US/Canada toll free (proposed, may not be in use yet)
855--? US/Canada toll free (proposed, may not be in use yet)
866--? US/Canada toll free
868---4 Trinidad and Tobago ("new" -- see 809)
869---4 St. Kitts & Nevis
876---5 Jamaica (split from 809)
877--? US/Canada toll free
880---- Paid Toll-Free Service
881---- Paid Toll-Free Service
882---- Paid Toll-Free Service
888--? US/Canada toll free
898--? VoIP service
900--? US toll calls -- prices vary with the number called
911---- Emergency
976---- Unassigned
999---- Often used by carriers to indicate that the area code information is unavailable for CNID, even though the rest of the number is present
52 55MX-6 Mexico: Mexico City area (country code + city code)
403AB-7 Canada: Southern Alberta (see 780, 867)
780AB-7 Canada: Northern Alberta, north of Lacombe (see 403)
907AK-9 Alaska
205AL-6 Central Alabama (including Birmingham; excludes the southeastern corner of Alabama and the deep south; see splits 256 and 334)
251AL-6 S Alabama: Mobile and coastal areas, Jackson, Evergreen, Monroeville (split from 334, eff 6/18/01; see also 205, 256)
256AL-6 E and N Alabama (Huntsville, Florence, Gadsden; split from 205; see also 334)
334AL-6 S Alabama: Auburn/Opelika, Montgomery and coastal areas (part of what used to be 205; see also 256, split 251)
479AR-6 NW Arkansas: Fort Smith, Fayetteville, Springdale, Bentonville (SPLIt from 501, perm 1/19/02, mand 7/20/02)
501AR-6 Central Arkansas: Little Rock, Hot Springs, Conway (see split 479)
870AR-6 Arkansas: areas outside of west/central AR: Jonesboro, etc
480AZ-7* Arizona: East Phoenix (see 520; also Phoenix split 602, 623)
520AZ-7* SE Arizona: Tucson area (split from 602; see split 928)
602AZ-7* Arizona: Phoenix (see 520; also Phoenix split 480, 623)
623AZ-7* Arizona: West Phoenix (see 520; also Phoenix split 480, 602)
928AZ-7* Central and Northern Arizona: Prescott, Flagstaff, Yuma (split from 520)
250BC-8/-7 Canada: British Columbia (see 604)
604BC-8 Canada: British Columbia: Greater Vancouver (overlay 778, perm 11/3/01; see 250)
778BC-8 Canada: British Columbia: Greater Vancouver (overlaid on 604, per 11/3/01; see also 250)
209CA-8 Cent. California: Stockton (see split 559)
213CA-8 S California: Los Angeles (see 310, 323, 626, 818)
310CA-8 S California: Beverly Hills, West Hollywood, West Los Angeles (see split 562; overlay 424)
323CA-8 S California: Los Angeles (outside downtown: Hollywood; split from 213)
341CA-8 (overlay on 510; SUSPENDED)
369CA-8 Solano County (perm 12/2/00, mand 6/2/01)
408CA-8 Cent. Coastal California: San Jose (see overlay 669)
415CA-8 California: San Francisco County and Marin County on the north side of the Golden Gate Bridge, extending north to Sonoma County (see 650)
424CA-8 S California: Los Angeles (see split 562; overlaid on 310 mand 7/26/06)
442CA-8 Far north suburbs of San Diego (Oceanside, Escondido, SUSPENDED -- originally perm 10/21/00, mand 4/14/01)
510CA-8 California: Oakland, East Bay (see 925)
530CA-8 NE California: Eldorado County area, excluding Eldorado Hills itself: incl cities of Auburn, Chico, Redding, So. Lake Tahoe, Marysville, Nevada City/Grass Valley (split from 916)
559CA-8 Central California: Fresno (split from 209)
562CA-8 California: Long Beach (split from 310 Los Angeles)
619CA-8 S California: San Diego (see split 760; overlay 858, 935)
626CA-8 E S California: Pasadena (split from 818 Los Angeles)
627CA-8 No longer in use [was Napa, Sonoma counties (perm 10/13/01, mand 4/13/02); now 707]
628CA-8 (Region unknown; perm 10/21/00)
650CA-8 California: Peninsula south of San Francisco -- San Mateo County, parts of Santa Clara County (split from 415)
661CA-8 California: N Los Angeles, Mckittrick, Mojave, Newhall, Oildale, Palmdale, Taft, Tehachapi, Bakersfield, Earlimart, Lancaster (split from 805)
669CA-8 Cent. Coastal California: San Jose (rejected was: overlaid on 408)
707CA-8 NW California: Santa Rosa, Napa, Vallejo, American Canyon, Fairfield
714CA-8 North and Central Orange County (see split 949)
747CA-8 S California: Los Angeles, Agoura Hills, Calabasas, Hidden Hills, and Westlake Village (see 818; implementation suspended)
760CA-8 California: San Diego North County to Sierra Nevada (split from 619)
764CA-8 (overlay on 650; SUSPENDED)
805CA-8 S Cent. and Cent. Coastal California: Ventura County, Santa Barbara County: San Luis Obispo, Thousand Oaks, Carpinteria, Santa Barbara, Santa Maria, Lompoc, Santa Ynez Valley / Solvang (see 661 split)
818CA-8 S California: Los Angeles: San Fernando Valley (see 213, 310, 562, 626, 747)
831CA-8 California: central coast area from Santa Cruz through Monterey County
858CA-8 S California: San Diego (see split 760; overlay 619, 935)
909CA-8 California: Inland empire: San Bernardino (see split 951), Riverside
916CA-8 NE California: Sacramento, Walnut Grove, Lincoln, Newcastle and El Dorado Hills (split to 530)
925CA-8 California: Contra Costa area: Antioch, Concord, Pleasanton, Walnut Creek (split from 510)
935CA-8 S California: San Diego (see split 760; overlay 858, 619; assigned but not in use)
949CA-8 California: S Coastal Orange County (split from 714)
951CA-8 California: W Riverside County (split from 909; eff 7/17/04)
303CO-7 Central Colorado: Denver (see 970, also 720 overlay)
719CO-7 SE Colorado: Pueblo, Colorado Springs
720CO-7 Central Colorado: Denver (overlaid on 303)
970CO-7 N and W Colorado (part of what used to be 303)
203CT-5 Connecticut: Fairfield County and New Haven County; Bridgeport, New Haven (see 860)
475CT-5 Connecticut: New Haven, Greenwich, southwestern (postponed; was perm 1/6/01; mand 3/1/01???)
860CT-5 Connecticut: areas outside of Fairfield and New Haven Counties (split from 203, overlay 959)
959CT-5 Connecticut: Hartford, New London (postponed; was overlaid on 860 perm 1/6/01; mand 3/1/01???)
202DC-5 Washington, D.C.
302DE-5 Delaware
239FL-5 Florida (Lee, Collier, and Monroe Counties, excl the Keys; see 305; eff 3/11/02; mand 3/11/03)
305FL-5 SE Florida: Miami, the Keys (see 786, 954; 239)
321FL-5 Florida: Brevard County, Cape Canaveral area; Metro Orlando (split from 407)
352FL-5 Florida: Gainesville area, Ocala, Crystal River (split from 904)
386FL-5 N central Florida: Lake City (split from 904, perm 2/15/01, mand 11/5/01)
407FL-5 Central Florida: Metro Orlando (see overlay 689, eff 7/02; split 321)
561FL-5 S. Central Florida: Palm Beach County (West Palm Beach, Boca Raton, Vero Beach; see split 772, eff 2/11/02; mand 11/11/02)
689FL-5 Central Florida: Metro Orlando (see overlay 321; overlaid on 407, assigned but not in use)
727FL-5 Florida Tampa Metro: Saint Petersburg, Clearwater (Pinellas and parts of Pasco County; split from 813)
754FL-5 Florida: Broward County area, incl Ft. Lauderdale (overlaid on 954; perm 8/1/01, mand 9/1/01)
772FL-5 S. Central Florida: St. Lucie, Martin, and Indian River counties (split from 561; eff 2/11/02; mand 11/11/02)
786FL-5 SE Florida, Monroe County (Miami; overlaid on 305)
813FL-5 SW Florida: Tampa Metro (splits 727 St. Petersburg, Clearwater, and 941 Sarasota)
850FL-6/-5 Florida panhandle, from east of Tallahassee to Pensacola (split from 904); western panhandle (Pensacola, Panama City) are UTC-6
863FL-5 Florida: Lakeland, Polk County (split from 941)
904FL-5 N Florida: Jacksonville (see splits 352, 386, 850)
927FL-5 Florida: Cellular coverage in Orlando area
941FL-5 SW Florida: Sarasota and Manatee counties (part of what used to be 813; see split 863)
954FL-5 Florida: Broward County area, incl Ft. Lauderdale (part of what used to be 305, see overlay 754)
229GA-5 SW Georgia: Albany (split from 912; see also 478; perm 8/1/00)
404GA-5 N Georgia: Atlanta and suburbs (see overlay 678, split 770)
470GA-5 Georgia: Greater Atlanta Metropolitan Area (overlaid on 404/770/678; mand 9/2/01)
478GA-5 Central Georgia: Macon (split from 912; see also 229; perm 8/1/00; mand 8/1/01)
678GA-5 N Georgia: metropolitan Atlanta (overlay; see 404, 770)
706GA-5 N Georgia: Columbus, Augusta (see overlay 762)
762GA-5 N Georgia: Columbus, Augusta (overlaid on 706)
770GA-5 Georgia: Atlanta suburbs: outside of I-285 ring road (part of what used to be 404; see also overlay 678)
912GA-5 SE Georgia: Savannah (see splits 229, 478)
671GU+10* Guam
808HI-10* Hawaii
319IA-6 E Iowa: Cedar Rapids (see split 563)
515IA-6 Cent. Iowa: Des Moines (see split 641)
563IA-6 E Iowa: Davenport, Dubuque (split from 319, eff 3/25/01)
641IA-6 Iowa: Mason City, Marshalltown, Creston, Ottumwa (split from 515; perm 7/9/00)
712IA-6 W Iowa: Council Bluffs
208ID-7/-8 Idaho
217IL-6 Cent. Illinois: Springfield
224IL-6 Northern NE Illinois: Evanston, Waukegan, Northbrook (overlay on 847, eff 1/5/02)
309IL-6 W Cent. Illinois: Peoria
312IL-6 Illinois: Chicago (downtown only -- in the loop; see 773; overlay 872)
331IL-6 W NE Illinois, western suburbs of Chicago (part of what used to be 708; overlaid on 630; eff 7/07)
464IL-6 Illinois: south suburbs of Chicago (see 630; overlaid on 708)
618IL-6 S Illinois: Centralia
630IL-6 W NE Illinois, western suburbs of Chicago (part of what used to be 708; overlay 331)
708IL-6 Illinois: southern and western suburbs of Chicago (see 630; overlay 464)
773IL-6 Illinois: city of Chicago, outside the loop (see 312; overlay 872)
779IL-6 NW Illinois: Rockford, Kankakee (overlaid on 815; eff 8/19/06, mand 2/17/07)
815IL-6 NW Illinois: Rockford, Kankakee (see overlay 779; eff 8/19/06, mand 2/17/07)
847IL-6 Northern NE Illinois: northwestern suburbs of chicago (Evanston, Waukegan, Northbrook; see overlay 224)
872IL-6 Illinois: Chicago (downtown only -- in the loop; see 773; overlaid on 312 and 773)
219IN-6/-5 NW Indiana: Gary (see split 574, 260)
260IN-5 NE Indiana: Fort Wayne (see 219)
317IN-5 Cent. Indiana: Indianapolis (see 765)
574IN-5 N Indiana: Elkhart, South Bend (split from 219)
765IN-5 Indiana: outside Indianapolis (split from 317)
812IN-6/-5 S Indiana: Evansville, Cincinnati outskirts in IN, Columbus, Bloomington (mostly GMT-5)
316KS-6 S Kansas: Wichita (see split 620)
620KS-6 S Kansas: Wichita (split from 316; perm 2/3/01)
785KS-6 N & W Kansas: Topeka (split from 913)
913KS-6 Kansas: Kansas City area (see 785)
270KY-6 W Kentucky: Bowling Green, Paducah (split from 502)
502KY-5 N Central Kentucky: Louisville (see 270)
606KY-5/-6 E Kentucky: area east of Frankfort: Ashland (see 859)
859KY-5 N and Central Kentucky: Lexington; suburban KY counties of Cincinnati OH metro area; Covington, Newport, Ft. Thomas, Ft. Wright, Florence (split from 606)
225LA-6 Louisiana: Baton Rouge, New Roads, Donaldsonville, Albany, Gonzales, Greensburg, Plaquemine, Vacherie (split from 504)
318LA-6 N Louisiana: Shreveport, Ruston, Monroe, Alexandria (see split 337)
337LA-6 SW Louisiana: Lake Charles, Lafayette (see split 318)
504LA-6 E Louisiana: New Orleans metro area (see splits 225, 985)
985LA-6 E Louisiana: SE/N shore of Lake Pontchartrain: Hammond, Slidell, Covington, Amite, Kentwood, area SW of New Orleans, Houma, Thibodaux, Morgan City (split from 504; perm 2/12/01; mand 10/22/01)
339MA-5 Massachusetts: Boston suburbs, to the south and west (see splits 617, 508; overlaid on 781, eff 5/2/01)
351MA-5 Massachusetts: north of Boston to NH, 508, and 781 (overlaid on 978, eff 4/2/01)
413MA-5 W Massachusetts: Springfield
508MA-5 Cent. Massachusetts: Framingham; Cape Cod (see split 978, overlay 774)
617MA-5 Massachusetts: greater Boston (see overlay 857)
774MA-5 Cent. Massachusetts: Framingham; Cape Cod (see split 978, overlaid on 508, eff 4/2/01)
781MA-5 Massachusetts: Boston surburbs, to the north and west (see splits 617, 508; overlay 339)
857MA-5 Massachusetts: greater Boston (overlaid on 617, eff 4/2/01)
978MA-5 Massachusetts: north of Boston to NH (see split 978 -- this is the northern half of old 508; see overlay 351)
204MB-6 Canada: Manitoba
240MD-5 W Maryland: Silver Spring, Frederick, Gaithersburg (overlay, see 301)
301MD-5 W Maryland: Silver Spring, Frederick, Camp Springs, Prince George's County (see 240)
410MD-5 E Maryland: Baltimore, Annapolis, Chesapeake Bay area, Ocean City (see 443)
443MD-5 E Maryland: Baltimore, Annapolis, Chesapeake Bay area, Ocean City (overlaid on 410)
207ME-5 Maine
231MI-5 W Michigan: Northwestern portion of lower Peninsula; Traverse City, Muskegon, Cheboygan, Alanson
248MI-5 Michigan: Oakland County, Pontiac (split from 810; see overlay 947)
269MI-5 SW Michigan: Kalamazoo, Saugatuck, Hastings, Battle Creek, Sturgis to Lake Michigan (split from 616)
278MI-5 Michigan (overlaid on 734, SUSPENDED)
313MI-5 Michigan: Detroit and suburbs (see 734, overlay 679)
517MI-5 Cent. Michigan: Lansing (see split 989)
586MI-5 Michigan: Macomb County (split from 810; perm 9/22/01, mand 3/23/02)
616MI-5 W Michigan: Holland, Grand Haven, Greenville, Grand Rapids, Ionia (see split 269)
679MI-5/-6 Michigan: Dearborn area (overlaid on 313; assigned but not in use)
734MI-5 SE Michigan: west and south of Detroit -- Ann Arbor, Monroe (split from 313)
810MI-5 E Michigan: Flint, Pontiac (see 248; split 586)
906MI-6/-5 Upper Peninsula Michigan: Sault Ste. Marie, Escanaba, Marquette (UTC-6 towards the WI border)
947MI-5/-6 Michigan: Oakland County (overlays 248, perm 5/5/01)
989MI-5 Upper central Michigan: Mt Pleasant, Saginaw (split from 517; perm 4/7/01)
218MN-6 N Minnesota: Duluth
320MN-6 Cent. Minnesota: Saint Cloud (rural Minn, excl St. Paul/Minneapolis)
507MN-6 S Minnesota: Rochester, Mankato, Worthington
612MN-6 Cent. Minnesota: Minneapolis (split from St. Paul, see 651; see splits 763, 952)
651MN-6 Cent. Minnesota: St. Paul (split from Minneapolis, see 612)
763MN-6 Minnesota: Minneapolis NW (split from 612; see also 952)
952MN-6 Minnesota: Minneapolis SW, Bloomington (split from 612; see also 763)
314MO-6 SE Missouri: St Louis city and parts of the metro area only (see 573, 636, overlay 557)
417MO-6 SW Missouri: Springfield
557MO-6 SE Missouri: St Louis metro area only (cancelled: overlaid on 314)
573MO-6 SE Missouri: excluding St Louis metro area, includes Central/East Missouri, area between St. Louis and Kansas City
636MO-6 Missouri: W St. Louis metro area of St. Louis county, St. Charles County, Jefferson County area south (between 314 and 573)
660MO-6 N Missouri (split from 816)
816MO-6 N Missouri: Kansas City (see split 660, overlay 975)
975MO-6 N Missouri: Kansas City (overlaid on 816)
670MP+10* Commonwealth of the Northern Mariana Islands (CNMI, US Commonwealth)
228MS-6 S Mississippi (coastal areas, Biloxi, Gulfport; split from 601)
601MS-6 Mississippi: Meridian, Jackson area (see splits 228, 662; overlay 769)
662MS-6 N Mississippi: Tupelo, Grenada (split from 601)
769MS-6 Mississippi: Meridian, Jackson area (overlaid on 601; perm 7/19/04, mand 3/14/05)
406MT-7 Montana
506NB-4 Canada: New Brunswick
252NC-5 E North Carolina (Rocky Mount; split from 919)
336NC-5 Cent. North Carolina: Greensboro, Winston-Salem, High Point (split from 910)
704NC-5 W North Carolina: Charlotte (see split 828, overlay 980)
828NC-5 W North Carolina: Asheville (split from 704)
910NC-5 S Cent. North Carolina: Fayetteville, Wilmington (see 336)
919NC-5 E North Carolina: Raleigh (see split 252, overlay 984)
980NC-5 North Carolina: (overlay on 704; perm 5/1/00, mand 3/15/01)
984NC-5 E North Carolina: Raleigh (overlaid on 919, perm 8/1/01, mand 2/5/02 POSTPONED)
701ND-6 North Dakota
308NE-6/-7 W Nebraska: North Platte
402NE-6 E Nebraska: Omaha, Lincoln
603NH-5 New Hampshire
201NJ-5 N New Jersey: Jersey City, Hackensack (see split 973, overlay 551)
551NJ-5 N New Jersey: Jersey City, Hackensack (overlaid on 201)
609NJ-5 S New Jersey: Trenton (see 856)
732NJ-5 Cent. New Jersey: Toms River, New Brunswick, Bound Brook (see overlay 848)
848NJ-5 Cent. New Jersey: Toms River, New Brunswick, Bound Brook (see overlay 732)
856NJ-5 SW New Jersey: greater Camden area, Mt Laurel (split from 609)
862NJ-5 N New Jersey: Newark Paterson Morristown (overlaid on 973)
908NJ-5 Cent. New Jersey: Elizabeth, Basking Ridge, Somerville, Bridgewater, Bound Brook
973NJ-5 N New Jersey: Newark, Paterson, Morristown (see overlay 862; split from 201)
709NL-4/-3.5 Canada: Newfoundland and Labrador
505NM-7 North central and northwestern New Mexico (Albuquerque, Santa Fe, Los Alamos; see split 575, eff 10/07/07)
575NM-7 New Mexico (Las Cruces, Alamogordo, Roswell; split from 505, eff 10/07/07)
957NM-7 New Mexico (pending; region unknown)
902NS-4 Canada: Nova Scotia, Prince Edward Island
702NV-8 S. Nevada: Clark County, incl Las Vegas (see 775)
775NV-8 N. Nevada: Reno (all of NV except Clark County area; see 702)
212NY-5 New York City, New York (Manhattan; see 646, 718)
315NY-5 N Cent. New York: Syracuse
347NY-5 New York (overlay for 718: NYC area, except Manhattan)
516NY-5 New York: Nassau County, Long Island; Hempstead (see split 631)
518NY-5 NE New York: Albany
585NY-5 NW New York: Rochester (split from 716)
607NY-5 S Cent. New York: Ithaca, Binghamton; Catskills
631NY-5 New York: Suffolk County, Long Island; Huntington, Riverhead (split 516)
646NY-5 New York (overlay 212/917) NYC: Manhattan only
716NY-5 NW New York: Buffalo (see split 585)
718NY-5 New York City, New York (Queens, Staten Island, The Bronx, and Brooklyn; see 212, 347)
845NY-5 New York: Poughkeepsie; Nyack, Nanuet, Valley Cottage, New City, Putnam, Dutchess, Rockland, Orange, Ulster and parts of Sullivan counties in New York's lower Hudson Valley and Delaware County in the Catskills (see 914; perm 6/5/00)
914NY-5 S New York: Westchester County (see 845)
917NY-5 New York: New York City (cellular, see 646)
216OH-5 Cleveland (see splits 330, 440)
234OH-5 NE Ohio: Canton, Akron (overlaid on 330; perm 10/30/00)
283OH-5 SW Ohio: Cincinnati (cancelled: overlaid on 513)
330OH-5 NE Ohio: Akron, Canton, Youngstown; Mahoning County, parts of Trumbull/Warren counties (see splits 216, 440, overlay 234)
380OH-5 Ohio: Columbus (overlaid on 614; assigned but not in use)
419OH-5 NW Ohio: Toledo (see overlay 567, perm 1/1/02)
440OH-5 Ohio: Cleveland metro area, excluding Cleveland (split from 216, see also 330)
513OH-5 SW Ohio: Cincinnati (see split 937; overlay 283 cancelled)
567OH-5 NW Ohio: Toledo (overlaid on 419, perm 1/1/02)
614OH-5 SE Ohio: Columbus (see overlay 380)
740OH-5 SE Ohio (rural areas outside Columbus; split from 614)
937OH-5 SW Ohio: Dayton (part of what used to be 513)
405OK-6 W Oklahoma: Oklahoma City (see 580)
580OK-6 W Oklahoma (rural areas outside Oklahoma City; split from 405)
918OK-6 E Oklahoma: Tulsa
226ON-5 Canada: SW Ontario: Windsor (overlaid on 519; eff 6/06)
289ON-5 Canada: S Cent. Ontario: Greater Toronto Area -- Durham, Halton, Hamilton-Wentworth, Niagara, Peel, York, and southern Simcoe County (excluding Toronto -- overlaid on 905, eff 6/9/01)
416ON-5 Canada: S Cent. Ontario: Toronto (see overlay 647, eff 3/5/01)
519ON-5 Canada: SW Ontario: Windsor (see overlay 226)
613ON-5 Canada: SE Ontario: Ottawa
647ON-5 Canada: S Cent. Ontario: Toronto (overlaid on 416; eff 3/5/01)
705ON-5 Canada: NE Ontario: Sault Ste. Marie/N Ontario: N Bay, Sudbury
807ON-5/-6 Canada: W Ontario: Thunder Bay region to Manitoba border
905ON-5 Canada: S Cent. Ontario: Greater Toronto Area -- Durham, Halton, Hamilton-Wentworth, Niagara, Peel, York, and southern Simcoe County (excluding Toronto -- see overlay 289 [eff 6/9/01], splits 416, 647)
503OR-8 Oregon (see 541, 971)
541OR-8/-7 Oregon: Eugene, Medford (split from 503; 503 retains NW part [Portland/Salem], all else moves to 541; eastern oregon is UTC-7)
971OR-8 Oregon: Metropolitan Portland, Salem/Keizer area, incl Cricket Wireless (see 503; perm 10/1/00)
215PA-5 SE Pennsylvania: Philadelphia (see overlays 267)
267PA-5 SE Pennsylvania: Philadelphia (see 215)
412PA-5 W Pennsylvania: Pittsburgh (see split 724, overlay 878)
484PA-5 SE Pennsylvania: Allentown, Bethlehem, Reading, West Chester, Norristown (see 610)
570PA-5 NE and N Central Pennsylvania: Wilkes-Barre, Scranton (see 717)
610PA-5 SE Pennsylvania: Allentown, Bethlehem, Reading, West Chester, Norristown (see overlays 484, 835)
717PA-5 E Pennsylvania: Harrisburg (see split 570)
724PA-5 SW Pennsylvania (areas outside metro Pittsburgh; split from 412)
814PA-5 Cent. Pennsylvania: Erie
835PA-5 SE Pennsylvania: Allentown, Bethlehem, Reading, West Chester, Norristown (overlaid on 610, eff 5/1/01; see also 484)
878PA-5 Pittsburgh, New Castle (overlaid on 412, perm 8/17/01, mand t.b.a.)
787PR-4* Puerto Rico (see overlay 939, perm 8/1/01)
939PR-4* Puerto Rico (overlaid on 787, perm 8/1/01)
418QC-5/-4 Canada: NE Quebec: Quebec
438QC-5 Canada: SW Quebec: Montreal city (overlaid on 514, [delayed until 6/06] eff 10/10/03, mand 2/7/04)
450QC-5/-4 Canada: Southeastern Quebec; suburbs outside metro Montreal
514QC-5 Canada: SW Quebec: Montreal city (see overlay 438, eff 10/10/03, mand 2/7/04)
819QC-5 NW Quebec: Trois Rivieres, Sherbrooke, Outaouais (Gatineau, Hull), and the Laurentians (up to St Jovite / Tremblant) (see 867)
401RI-5 Rhode Island
803SC-5 South Carolina: Columbia, Aiken, Sumter (see 843, 864)
843SC-5 South Carolina, coastal area: Charleston, Beaufort, Myrtle Beach (split from 803)
864SC-5 South Carolina, upstate area: Greenville, Spartanburg (split from 803)
605SD-6/-7 South Dakota
306SK-6/-7* Canada: Saskatchewan
423TN-5 E Tennessee, except Knoxville metro area: Chattanooga, Bristol, Johnson City, Kingsport, Greeneville (see split 865; part of what used to be 615)
615TN-6 Northern Middle Tennessee: Nashville metro area (see 423, 931)
731TN-6 W Tennessee: outside Memphis metro area (split from 901, perm 2/12/01, mand 9/17/01)
865TN-5 E Tennessee: Knoxville, Knox and adjacent counties (split from 423; part of what used to be 615)
901TN-6 W Tennessee: Memphis metro area (see 615, 931, split 731)
931TN-6 Middle Tennessee: semi-circular ring around Nashville (split from 615)
210TX-6 S Texas: San Antonio (see also splits 830, 956)
214TX-6 Texas: Dallas Metro (overlays 469/972)
254TX-6 Central Texas (Waco, Stephenville; split, see 817, 940)
281TX-6 Texas: Houston Metro (split 713; overlay 832)
325TX-6 Central Texas: Abilene, Sweetwater, Snyder, San Angelo (split from 915)
361TX-6 S Texas: Corpus Christi (split from 512; eff 2/13/99)
409TX-6 SE Texas: Galveston, Port Arthur, Beaumont (splits 936, 979)
430TX-6 NE Texas: Tyler (overlaid on 903, eff 7/20/02)
432TX-7/-6 W Texas: Big Spring, Midland, Odessa (split from 915, eff 4/5/03)
469TX-6 Texas: Dallas Metro (overlays 214/972)
512TX-6 S Texas: Austin (see split 361; overlay 737, perm 11/10/01)
682TX-6 Texas: Fort Worth areas (perm 10/7/00, mand 12/9/00)
713TX-6 Mid SE Texas: central Houston (split, 281; overlay 832)
737TX-6 S Texas: Austin (overlaid on 512, suspended; see also 361)
806TX-6 Panhandle Texas: Amarillo, Lubbock
817TX-6 N Cent. Texas: Fort Worth area (see 254, 940)
830TX-6 Texas: region surrounding San Antonio (split from 210)
832TX-6 Texas: Houston (overlay 713/281)
903TX-6 NE Texas: Tyler (see overlay 430, eff 7/20/02)
915TX-7/-6 W Texas: El Paso (see splits 325 eff 4/5/03; 432, eff 4/5/03)
936TX-6 SE Texas: Conroe, Lufkin, Nacogdoches, Crockett (split from 409, see also 979)
940TX-6 N Cent. Texas: Denton, Wichita Falls (split from 254, 817)
956TX-6 Texas: Valley of Texas area; Harlingen, Laredo (split from 210)
972TX-6 Texas: Dallas Metro (overlays 214/469)
979TX-6 SE Texas: Bryan, College Station, Bay City (split from 409, see also 936)
385UT-7 Utah: Salt Lake City Metro (split from 801, eff 3/30/02 POSTPONED; see also 435)
435UT-7 Rural Utah outside Salt Lake City metro (see split 801)
801UT-7 Utah: Salt Lake City Metro (see split 385, eff 3/30/02; see also split 435)
236VA-5 Virginia (region unknown) / Unassigned?
276VA-5 S and SW Virginia: Bristol, Stuart, Martinsville (split from 540; perm 9/1/01, mand 3/16/02)
434VA-5 E Virginia: Charlottesville, Lynchburg, Danville, South Boston, and Emporia (split from 804, eff 6/1/01; see also 757)
540VA-5 Western and Southwest Virginia: Shenandoah and Roanoke valleys: Fredericksburg, Harrisonburg, Roanoke, Salem, Lexington and nearby areas (see split 276; split from 703)
571VA-5 Northern Virginia: Arlington, McLean, Tysons Corner (to be overlaid on 703 3/1/00; see earlier split 540)
703VA-5 Northern Virginia: Arlington, McLean, Tysons Corner (see split 540; overlay 571)
757VA-5 E Virginia: Tidewater / Hampton Roads area -- Norfolk, Virginia Beach, Chesapeake, Portsmouth, Hampton, Newport News, Suffolk (part of what used to be 804)
804VA-5 E Virginia: Richmond (see splits 757, 434)
340VI-4* US Virgin Islands (see also 809)
802VT-5 Vermont
206WA-8 W Washington state: Seattle and Bainbridge Island (see splits 253, 360, 425; overlay 564)
253WA-8 Washington: South Tier - Tacoma, Federal Way (split from 206, see also 425; overlay 564)
360WA-8 W Washington State: Olympia, Bellingham (area circling 206, 253, and 425; split from 206; see overlay 564)
425WA-8 Washington: North Tier - Everett, Bellevue (split from 206, see also 253; overlay 564)
509WA-8 E and Central Washington state: Spokane, Yakima, Walla Walla, Ellensburg
564WA-8 W Washington State: Olympia, Bellingham (overlaid on 360; see also 206, 253, 425; assigned but not in use)
262WI-6 SE Wisconsin: counties of Kenosha, Ozaukee, Racine, Walworth, Washington, Waukesha (split from 414)
414WI-6 SE Wisconsin: Milwaukee County (see splits 920, 262)
608WI-6 SW Wisconsin: Madison
715WI-6 N Wisconsin: Eau Claire, Wausau, Superior
920WI-6 NE Wisconsin: Appleton, Green Bay, Sheboygan, Fond du Lac (from Beaver Dam NE to Oshkosh, Appleton, and Door County; part of what used to be 414)
304WV-5 West Virginia
307WY-7 Wyoming
867YT-5/-6/-7/-8 Canada: Yukon, Northwest Territories, Nunavut (split from 403/819)

* indicates that daylight savings time is not observed.

"split" refers to a service area served by one area code being subdivided into two or more areas, with the original area code serving one of the subdivisions and new areacode(s) serving the other(s).

"overlay" refers to a service area being served by two or more area codes simultaneously. usually i write "X overlaid on Y" to mean that X is a new areacode that will service an area that previously was serviced solely by Y.

the advantage of a split is that for intra-service area dialing, only 7 digits are required, but some existing users will be forced to change their web site, stationery, business cards, etc. in contrast, an overlay only affects new customers, so is less of a burden; however, neighbors may have to dial 11 digits to call each other.

The split/overlay information is not exhaustive. Older dates are removed.

See NIST's Boulder labs' explanation of GMT versus UTC.

This document is at; check there for updates. If you have any corrections, please first verify that the correction is not already present (e.g., if you are working from a printed copy), and then send email to

Last updated Monday October 8th, 2007.

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