Area Code Listing From 301 to 399


This page lists all area codes starting with 3 that are accessible from the U.S. and Canada, the state the area code belongs to, and the time zone of all area codes.

Please click on the first digit of the area code if you need to find information on another area code:

2 . 3 . 4 . 5 . 6 . 7 . 8 . 9 . Time Zone . By State

301 . 302 . 303 . 304 . 305 . 306 . 307 . 308 . 309 . 310 . 311 . 312 . 313 . 314 . 315 . 316 . 317 . 318 . 319 . 320 . 321 . 322 . 323 . 324 . 325 . 326 . 327 . 328 . 329 . 330 . 331 . 332 . 333 . 334 . 335 . 336 . 337 . 338 . 339 . 340 . 341 . 342 . 343 . 344 . 345 . 346 . 347 . 348 . 349 . 350 . 351 . 352 . 353 . 354 . 355 . 356 . 357 . 358 . 359 . 360 . 361 . 362 . 363 . 364 . 365 . 366 . 367 . 368 . 369 . 370 . 371 . 372 . 373 . 374 . 375 . 376 . 377 . 378 . 379 . 380 . 381 . 382 . 383 . 384 . 385 . 386 . 387 . 388 . 389 . 390 . 391 . 392 . 393 . 394 . 395 . 396 . 397 . 398 . 399 .

Area Codes Table

Area Code
Country
State
Time Zone
301
USMarylandEastern Time Zone
302
USDelawareEastern Time Zone
303
USColoradoMountain Time Zone
304
USWest VirginiaEastern Time Zone
305
USFloridaEastern Time Zone
306
CanadaSaskatchewanCentral Time Zone, Mountain Time Zone
307
USWyomingMountain Time Zone
308
USNebraskaCentral Time Zone, Mountain Time Zone
309
USIllinoisCentral Time Zone
310
USCaliforniaPacific Time Zone
311
Unassigned
312
USIllinoisCentral Time Zone
313
USMichiganEastern Time Zone
314
USMissouriCentral Time Zone
315
USNew YorkEastern Time Zone
316
USKansasCentral Time Zone
317
USIndianaCentral Time Zone
318
USLouisianaCentral Time Zone
319
USIowaCentral Time Zone
320
USMinnesotaCentral Time Zone
321
USFloridaEastern Time Zone
322
Unassigned
323
USCaliforniaPacific Time Zone
324
Unassigned
325
USTexasCentral Time Zone
326
Unassigned
327
USArkansasCentral Time Zone
328
Unassigned
329
Unassigned
330
USOhioEastern Time Zone
331
USIllinoisCentral Time Zone
332
Unassigned
333
Unassigned
334
USAlabamaCentral Time Zone
335
Unassigned
336
USNorth CarolinaEastern Time Zone
337
USLouisianaCentral Time Zone
338
Unassigned
339
USMassachusettsEastern Time Zone
340
US Virgin IslandsAtlantic Time Zone
341
USCaliforniaPacific Time Zone
342
Unassigned
343
CanadaOntarioEastern Time Zone
344
Unassigned
345
Cayman IslandsEastern Time Zone
346
USTexasCentral Time Zone
347
USNew YorkEastern Time Zone
348
Unassigned
349
Unassigned
350
Unassigned
351
USMassachusettsEastern Time Zone
352
USFloridaEastern Time Zone
353
Unassigned
354
Unassigned
355
Unassigned
356
Unassigned
357
Unassigned
358
Unassigned
359
Unassigned
360
USWashingtonPacific Time Zone
361
USTexasCentral Time Zone
362
Unassigned
363
Unassigned
364
USKentuckyCentral Time Zone
365
CanadaOntarioEastern Time Zone
366
Unassigned
367
Unassigned
368
Unassigned
369
USCaliforniaPacific Time Zone
370
Unassigned
371
Unassigned
372
Unassigned
373
Unassigned
374
Unassigned
375
Unassigned
376
Unassigned
377
Unassigned
378
Unassigned
379
Unassigned
380
USOhioEastern Time Zone
381
Unassigned
382
Unassigned
383
Unassigned
384
Unassigned
385
USUtahMountain Time Zone
386
USFloridaEastern Time Zone
387
Unassigned
388
Unassigned
389
Unassigned
390
Unassigned
391
Unassigned
392
Unassigned
393
Unassigned
394
Unassigned
395
Unassigned
396
Unassigned
397
Unassigned
398
Unassigned
399
Unassigned
Note: Area codes in gray represents the location is outside of the 50 states of the U.S. and Canada.

2 . 3 . 4 . 5 . 6 . 7 . 8 . 9 . Time Zone . By State





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