US Area Codes

Numeric index · 3XX

Area Codes Starting With 3

All 37 active US area codes that begin with the digit 3, with the city, state, and time zone each one serves.

Full list

All 3XX area codes

Complete numeric index →
CodeMain cityStateTime zone
301FrederickMarylandEastern Time
302WilmingtonDelawareEastern Time
303DenverColoradoMountain Time
304CharlestonWest VirginiaEastern Time
305MiamiFloridaEastern Time
307CheyenneWyomingMountain Time
308North PlatteNebraskaCentral Time
309PeoriaIllinoisCentral Time
310Los AngelesCaliforniaPacific Time
312ChicagoIllinoisCentral Time
313DetroitMichiganEastern Time
314St. LouisMissouriCentral Time
315SyracuseNew YorkEastern Time
316WichitaKansasCentral Time
317IndianapolisIndianaEastern Time
318ShreveportLouisianaCentral Time
319Cedar RapidsIowaCentral Time
320St. CloudMinnesotaCentral Time
321OrlandoFloridaEastern Time
323Los AngelesCaliforniaPacific Time
325AbileneTexasCentral Time
330AkronOhioEastern Time
331AuroraIllinoisCentral Time
332New York CityNew YorkEastern Time
334MontgomeryAlabamaCentral Time
336GreensboroNorth CarolinaEastern Time
337LafayetteLouisianaCentral Time
339BostonMassachusettsEastern Time
340Charlotte AmalieU.S. Virgin IslandsAtlantic Time
346HoustonTexasCentral Time
347New York CityNew YorkEastern Time
351LowellMassachusettsEastern Time
352GainesvilleFloridaEastern Time
360BellinghamWashingtonPacific Time
361Corpus ChristiTexasCentral Time
385Salt Lake CityUtahMountain Time
386Daytona BeachFloridaEastern Time
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