USA Area Codes by State

The United States uses a system of telephone area codes to organize phone numbers by geographic region. Each state has one or more area codes depending on population size, phone usage, and geographic coverage. This complete guide to area codes for usa states​ will help you understand how area codes work and provide a full list for every state.

Whether you’re a business owner setting up a local phone presence, a traveler trying to identify an incoming call, or simply curious about how the North American telephone system works, understanding USA area codes by state is incredibly useful. This comprehensive guide covers every state in the United States, listing their area codes, key cities served, and everything you need to know about the North American Numbering Plan (NANP).

What Are USA Area Codes?

USA area codes are three-digit numbers that identify specific geographic regions within the North American Numbering Plan (NANP). Area codes are used at the beginning of a 10-digit phone number and help route calls to the correct location.

state area codes in usa

Why Does Each State Have Multiple Area Codes?

Some states have multiple area codes because of:

  • Large population
  • High demand for mobile phones
  • Business growth
  • Internet and VoIP services
  • Urban expansion

Area Code For USA States

Below is a detailed, state-by-state breakdown of all area codes currently in use across the United States.

ALASKA (Ak)

1 code

907

ALABAMA (AL)

6 code

205, 251, 256, 334, 659, 938

ARKANSAS (AR)

3 code

479, 501, 870

ARIZONA (AZ)

5 code

480, 520, 602, 623, 928

CALIFORNIA (CA)

41 code

209, 213, 279, 310, 323, 341, 250, 357, 369, 408, 415, 424, 442, 510, 530, 559, 562, 619, 626, 628, 650, 657, 661, 669, 707, 714, 738, 747, 760, 805, 818, 820, 831, 837, 840, 858, 909, 916, 925, 949, 951

COLORADO (CO)

6 code

303, 719, 720, 748, 970, 983

CONNECTICUT (CT)

4 code

203, 475, 860, 959

DELAWARE (DE)

1 code

302

FLORIDA (FL)

23 code

239, 305, 321, 324, 352, 386, 407, 448, 561, 645, 656, 689, 727, 728, 754, 772, 786, 813, 850, 863, 904, 941, 954

GEORGIA (GA)

10 code

229, 404, 470, 478, 678, 706, 762, 770, 912, 943

HAWAII (HI)

1 code

808

IOWA (IA)

5 code

319, 515, 563, 641, 712

IDAHO (ID)

1 code

208

ILLINOIS (IL)

17 code

217, 224, 309, 312, 331, 447, 464, 618, 630, 708, 730, 773, 779, 815, 847, 861, 872

INDIANA (IN)

8 code

219, 260, 317, 463, 574, 765, 812, 930

KANSAS (KS)

4 code

316, 620, 785, 913

KENTUCKY (KY)

4 code

270, 502, 606, 859

LOUISIANA (LA)

6 code

225, 318, 337, 457, 504, 985

MASSACHUSETTS (MA)

9 code

339, 351, 413, 508, 617, 774, 781, 857, 978

MARYLAND (MD)

5 code

240, 301, 410, 443, 667

MAINE (ME)

1 code

207

MICHIGAN (MI)

13 code

231, 248, 269, 313, 517, 586, 616, 679, 734, 810, 906, 947, 989

MINNESOTA (MN)

8 code

218, 320, 507, 612, 651, 763, 924, 952

MISSOURI (MO)

9 code

235, 314, 417, 557, 573, 636, 660, 816, 975

MISSISSIPPI (MS)

5 code

228, 471, 601, 662, 769

MONTANA (MT)

1 code

406

NORTH CAROLINA (NC)

10 code

252, 336, 472, 704, 743, 828, 910, 919, 980, 984

NORTH DAKOTA (ND)

1 code

701

NEBRASKA (NE)

3 code

308, 402, 531

NEW HAMPSHIRE (NH)

1 code

603

NEW JERSEY (NJ)

10 code

2O1, 551, 609, 640, 732, 848, 856, 862, 908, 973

NEW MEXICO (NM)

2 code

505, 575

NEVADA (NV)

3 code

702, 725, 775

NEW YORK (NY)

22 code

212, 646, 332, 718, 347, 929, 917, 315, 680, 518, 838, 716, 624, 585, 607, 914, 516, 363, 845, 329, 631, 934

OHIO (OH)

15 code

216, 330, 234, 440, 436, 419, 567, 513, 283, 937, 326, 614, 380, 740, 220

OKLAHOMA (OK)

5 code

405, 572, 918, 539, 580

OREGON (OR)

4 code

503, 971, 541, 458

PENNSYLVANIA (PA)

15 code

215, 267, 445, 610, 484, 835, 412, 724, 878, 717, 223, 570, 272, 814, 582

RHODE ISLAND (RI)

1 code

401

SOUTH CAROLINA (SC)

6 code

803, 839, 864, 821, 843, 854

SOUTH DAKOTA (SD)

1 code

605

TENNESSEE (TN)

8 code

901, 615, 629, 931, 423, 729, 865, 731

TEXAS (TX)

28 code

210, 214, 254, 281, 325, 346, 361, 409, 430, 432, 469, 512, 682, 713, 726, 737, 806, 817, 830, 832, 903, 915, 936, 940, 945, 956, 972, 979

UTAH (UT)

3 code

801, 385, 435

VIRGINIA (VA)

6 code

276, 434, 540, 703, 757, 804

VERMONT (VT)

1 code

802

WASHINGTON (WA)

6 code

206, 360, 564, 253, 425, 509

WISCONSIN (WI)

8 code

414, 608, 353, 920, 274, 262, 715, 534

WEST VIRGINIA (WV)

1 code

304

WYOMING (WY)

1 code

307

How Area Codes Are Assigned

The Federal Communications Commission (FCC) and the North American Numbering Plan Administrator (NANPA) oversee area code assignments. When a region runs out of available phone numbers, a new area code is introduced through one of three methods:

  • Geographic Split: The existing area is divided into two separate zones, each with a different area code.
  • Overlay: A new area code is added to the same geographic area, meaning two area codes cover the same region simultaneously.
  • Expansion: Occasionally, boundaries are redrawn to include new territories.

Why Do Area Codes Change or Get Added?

The primary reason new area codes are introduced is number exhaustion, a region runs out of unique seven-digit numbers within its existing code. It has been driven by:

  • Mobile phone adoption — Every smartphone needs its own number.
  • VoIP and internet telephony — Businesses and services require dedicated lines.
  • Population growth — Rapidly growing metro areas like Austin, Dallas, and Phoenix require more people.
  • Fax machines and data lines — Even in business settings, additional numbers are needed.

Tips for Businesses Choosing an Area Code

If you’re a business selecting a local or virtual phone number, consider these tips:

  • Match your target market: A local area code builds trust with local customers.
  • Use overlay codes for new markets: If you’re entering a city that uses multiple area codes, consider an overlay code for broader coverage.
  • Consider toll-free (800) numbers for nationwide reach.
  • VoIP providers like Google Voice, RingCentral, and Twilio let you choose from almost any available area code across the country.

Frequently Asked Question(FAQs)

As of 2026, there are over 300 active area codes in the United States, with more growing regions.

California has the most area codes of any single state, with over 35 active codes, thanks to its massive population.

States with a single area code include Alaska (907), Delaware (302), Hawaii (808), Idaho (208), Maine (207), Montana (406), New Hampshire (603), North Dakota (701), Rhode Island (401), South Dakota (605), Vermont (802), and Wyoming (307).

In a few exceptional cases, yes. The 423 area code near the Tennessee–Georgia border, for example, primarily serves Tennessee but can affect areas near the border. Most area codes, however, are strictly within state lines.

212 is one of the most famous area codes, representing New York City.

Conclusion

USA area codes are essential for organizing telephone networks across all 50 states. Each state has one or multiple area codes, depending on population and demand. Large states like California, Texas, and New York have many area codes, while smaller states like Alaska, Wyoming, and Vermont have only one.

Understanding state area codes in usa​ is more relevant than ever in the age of mobile phones and remote work. Whether you’re trying to identify an unknown caller, set up business phone lines, or simply satisfy your interest in the telephone grid, knowing your area codes gives you a valuable layer of geographic and contextual knowledge.