North American Numbering Plan · United States
Look up any US area code in seconds.
Search every area code by number, city, or state. See which region a code covers, find overlays, the newest codes, and toll-free prefixes — all in one fast, accurate reference.
Search by 3-digit code (e.g. 415), city (e.g. Atlanta), or state (e.g. Ohio).
Browse the directory
Area codes by state
Every state and the District of Columbia. Each page lists all current area codes, the cities they serve, overlays, and dialing rules.
Most searched
Popular area codes
The codes people look up most — major metros and high-demand regions.
Fresh from NANPA
Newest & upcoming area codes
New overlay codes activating across the country. Existing numbers stay the same — new codes apply to new lines.
| Code | Region served | Overlays | Status |
|---|---|---|---|
| 565 | Southeast Georgia coast and inland, from Savannah to Brunswick and Waycross | 912 | Planned for December 6, 2027 |
| 761 | Louisville metro and north-central Kentucky including Frankfort | 502 | Planned (date not yet set) |
| 465 | Brooklyn, Queens, the Bronx and Staten Island in New York City | 347 / 718 / 917 / 929 | Live Jun 2026 |
| 483 | Southeastern and central Alabama including Montgomery, Dothan, Auburn and Phenix City | 334 | Live Feb 2026 |
| 471 | Northern Mississippi, including the Memphis suburbs, Tupelo, Oxford and the Delta | 662 | Live Jan 2026 |
| 679 | City of Detroit and nearby Wayne County communities | 313 | Live Nov 2025 |
| 457 | Northern and central Louisiana including Shreveport, Monroe and Alexandria | 318 | Live Sep 2025 |
| 729 | Eastern Tennessee outside Knoxville, including Chattanooga and the Tri-Cities | 423 | Live Sep 2025 |
Understand the system
How US area codes work
The basics of the North American Numbering Plan, why codes change, and what overlays mean for dialing.
NPA-NXX-XXXX
A US number is a 3-digit area code (the NPA), a 3-digit prefix, and a 4-digit line number. See the breakdown →
Geographic splits
When numbers run low, a region can be divided so part of it gets a brand-new code. How splits work →
Overlay codes
Most relief today is done with overlays — a second code over the same area, needing 10-digit dialing. About overlays →
10-digit dialing
Most of the US now requires the area code on every call, partly to support the 988 line. Why & where →
Non-geographic
Toll-free & special codes
Toll-free prefixes aren’t tied to a location — the business pays for the call. Plus the 3-digit service codes everyone shares.
Service codes: 911 emergency · 988 crisis & suicide lifeline · 211 community help · 411 directory · spam & scam-risk codes
Explore everything
Ways to explore area codes
Reference tools, guides, and lenses for slicing the directory however you need.
- Interactive US area code mapEvery code plotted on the map of the United States.
- Area code lookup toolType a code, get the city, state, and time zone.
- Phone number area code finderPaste a number to identify where it’s from.
- Area codes by cityFind the codes for any major US city.
- Area codes by regionNortheast, Midwest, South, and West breakdowns.
- Area codes by time zoneEastern, Central, Mountain, Pacific and beyond.
- Overlay area codes explainedWhy multiple codes share one region.
- Retired & changed codesCodes that were split, replaced, or relocated.
- Newest area codesThe most recently activated codes nationwide.
- Spam & scam-risk area codesCodes commonly spoofed by robocalls.
- Toll-free numbers800, 888, 877 and the rest of the family.
- Area codes near meIdentify the codes for your own location.
Quick answers
Frequently asked questions
How do I find what area code a city uses?
Type the city or state into the search box at the top of this page, or open that state’s page to see every code that serves it. Big metros like Los Angeles, New York City, and Houston use several area codes at once.
What is an overlay area code?
An overlay adds a new area code over the same geographic region instead of splitting it in two. Everyone keeps their existing number, new lines may get the new code, and 10-digit dialing becomes required. Read more →
How many area codes are in the United States?
There are more than 335 active US area codes, and new overlays are added regularly as growing regions run out of available numbers.
Are 800, 888, and 877 numbers free to call?
Yes — 800, 888, 877, 866, 855, 844, and 833 are toll-free. The business that owns the number pays for the call, not you. More on toll-free →
Why does one city have several area codes?
Dense regions exhaust their available numbers, so regulators add overlay codes. New York City, for instance, is served by 212, 718, 917, 347, 646, 929, and 332.