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There are 378 working area codes in the US, and 48 of them opened since 2021.

An area code is the first three digits of a 10-digit US phone number, and it tells you where the number was given out. Each page below shows the places a code serves, its time zone with the time there now, when it started and which codes share its ground. Add the 7 toll-free codes, which have no location at all, and that makes 385 pages.

Map of every United States area code, one dot per calling area, beside a lookup card showing area code 415 resolving to San Francisco, California

Look up the number that called you.

48 area codes have opened since 2021, every one of them laid over a code that was running out of numbers.

An overlay adds a new code on the same ground as an old one. Nobody's number changes, so a new code on your screen is usually a neighbour, not a stranger from far away.

Area codes opened each year
7
2021
10
2022
13
2023
8
2024
7
2025
3
2026 so far
  • 465New York, on top of 718Jun 2026
  • 483Alabama, on top of 334Feb 2026
  • 471Mississippi, on top of 662Jan 2026
  • 679Michigan, on top of 313Nov 2025
  • 457Louisiana, on top of 318Sep 2025
  • 729Tennessee, on top of 423Sep 2025
  • 748Colorado, on top of 970Jul 2025
  • 357California, on top of 559Mar 2025
  • 837California, on top of 530Jan 2025
  • 621Texas, on top of 346Jan 2025
  • 738California, on top of 323Nov 2024
  • 924Minnesota, on top of 507Aug 2024
  • 821South Carolina, on top of 864Aug 2024
  • 235Missouri, on top of 573Mar 2024
  • 436Ohio, on top of 440Mar 2024
  • 324Florida, on top of 904Feb 2024
  • 327Arkansas, on top of 870Feb 2024
  • 686Virginia, on top of 804Feb 2024
  • 624New York, on top of 716Nov 2023
  • 975Missouri, on top of 816Oct 2023
  • 353Wisconsin, on top of 608Sep 2023
  • 645Florida, on top of 305Aug 2023
  • 730Illinois, on top of 618Jul 2023
  • 227Maryland, on top of 301Jun 2023
  • 274Wisconsin, on top of 920May 2023
  • 283Ohio, on top of 513Apr 2023
  • 329New York, on top of 845Mar 2023
  • 728Florida, on top of 561Mar 2023
  • 861Illinois, on top of 309Feb 2023
  • 369California, on top of 707Feb 2023
  • 363New York, on top of 516Jan 2023
  • 350California, on top of 209Nov 2022
  • 472North Carolina, on top of 910Oct 2022
  • 835Pennsylvania, on top of 484Sep 2022
  • 557Missouri, on top of 314Aug 2022
  • 983Colorado, on top of 303Jun 2022
  • 826Virginia, on top of 540Jun 2022
  • 948Virginia, on top of 757May 2022
  • 943Georgia, on top of 470Mar 2022
  • 656Florida, on top of 813Feb 2022
  • 464Illinois, on top of 708Jan 2022
  • 771Washington, D.C., on top of 202Nov 2021
  • 448Florida, on top of 850Jun 2021
  • 572Oklahoma, on top of 405May 2021
  • 582Pennsylvania, on top of 814May 2021
  • 447Illinois, on top of 217Mar 2021
  • 840California, on top of 909Feb 2021
  • 945Texas, on top of 214Jan 2021

NANPA is planning new codes for 10 more areas now: 502, 509, 580, 626, 657, 714, 828, 912, 949 and 956. How many prefixes each one has left, and who got the new ones, is in our study of America's phone number prefixes.

7 toll-free codes are in use, and none of them is tied to a place.

These are not tied to any state. A toll-free call costs the person answering nothing, because the business receiving it pays instead.

800833844855866877888

Every working area code is listed here by the state it serves.

The name next to each code is the place holding most of its phone prefixes. Open a code to see every place it serves, its time zone and its history.

Area codes in use, 10 states with the most
California
41
Texas
29
Florida
23
New York
23
Illinois
17
Ohio
15
Pennsylvania
15
Michigan
13
Georgia
10
New Jersey
10

Alaska1 code

907Anchorage

American Samoa1 code

684American Samoa

Delaware1 code

302Wilmington

Hawaii1 code

808Honolulu

Idaho2 codes

208Boise986Boise

Maine1 code

207Portland

Montana1 code

406Billings

New Hampshire1 code

603Manchester

North Dakota1 code

701Fargo

Puerto Rico2 codes

787San Juan939San Juan

Rhode Island1 code

401Providence

South Dakota1 code

605Sioux Falls

the Northern Mariana Islands1 code

670Saipan

the U.S. Virgin Islands1 code

340Charlotte Amalie

Vermont1 code

802Burlington

Washington, D.C.2 codes

202Washington771Washington

West Virginia2 codes

304Charleston681Charleston

Wyoming1 code

307Cheyenne

278 and 627 are searched for, but no US phone number starts with them.

NANPA lists these codes as reserved and never assigned, so a call showing one of them had its caller ID faked. What 278 is and is not. What 627 is and is not.

Area code 213 has its own page for each of its 786 prefixes.

A prefix is the three digits after the area code. Open the prefixes in area code 213, downtown Los Angeles, to see who NANPA lists as the holder of each one. The company names you meet there are explained on our phone carrier names pages, and the whole country is in our study of America's phone number prefixes.

Your own website can have this area code lookup for free.

Paste two lines of code and your readers can look up any US area code without leaving your page: the state, the counties it covers, the time zone and the time there now. No account, no cookies. Get the free area code widget.

These are the questions people ask most about area codes.

How do I look up an area code?

Find the code in the list below and open its page, or enter a full 10-digit number in the lookup at the top. The area code is the first three digits of a US phone number, after the country code 1.

What area code is this number?

The area code is the first three digits of the 10-digit number. In (415) 555-0132 the area code is 415, which covers San Francisco, California. Enter the full number above and the lookup will tell you where it is registered and what kind of line it is.

Does an area code tell me where someone is?

It tells you where the number was assigned, not where the person is. Mobile numbers keep their original area code when their owner moves, so a 212 number may be answered in Denver. Caller ID can also be spoofed outright.

Which area codes are toll-free?

800, 833, 844, 855, 866, 877 and 888 are the toll-free codes in active use. They are not geographic, so a toll-free call can come from anywhere and costs the person called nothing. A few other prefixes (822, 880 to 887 and 889) are held in reserve for future toll-free expansion and carry no calls today, which is why they have no page here.

Are certain area codes scams?

No US area code is inherently a scam code. The genuine risk is with international codes that look domestic, particularly some Caribbean codes in the North American plan, where returning a missed call can incur premium charges. The safe rule is never to call back a missed call from a code you do not recognise.

Why do some cities have several area codes?

Because they ran out of numbers. When a region exhausts its supply, the plan administrator either splits it geographically or lays a new code over the same area as an overlay. Overlays are why one neighbourhood can have two or three codes in use at once.

Source: NANPA, the North American Numbering Plan Administrator: its area code database and prefix assignments, as of October 1, 2026.

Calling outside the US and Canada? Every country calling code is on its own page, with how to dial it and the time there now.