A reference instrument for the codes that route the country
US Area Codes, ZIP Codes & Country Calling Codes
Every code gets its own page, sourced and dated. Start by typing what you have — five digits, three digits, a city, or a country.
- 379 codes Area codes Who called you? Coverage, time zone and overlay codes for every US area code. Browse →
- 40,977 codes ZIP codes Every US ZIP code, with a page each and full lists for 16,642 cities. Browse →
- 3,144 county-equivalents Counties Which county a ZIP code falls in — parishes, boroughs and planning regions included. Browse →
- 248 countries Country codes How to dial any country from any other, with the exit code both ends need. Browse →
Most-searched area codes
- 213 Los Angeles, CA
- 929 New York, NY
- 202 Washington, DC
- 305 Miami, FL
- 323 Los Angeles, CA
- 786 Miami, FL
- 206 Seattle, WA
- 404 Atlanta, GA
- 408 San Jose, CA
- 702 Las Vegas, NV
- 754 Miami, FL
- 813 Tampa, FL
- 818 Los Angeles, CA
- 949 Anaheim, CA
- 954 Miami, FL
- 203 Bridgeport, CT
- 208 Boise, ID
- 310 Los Angeles, CA
- 312 Chicago, IL
- 424 Los Angeles, CA
- 480 Phoenix, AZ
- 510 San Francisco, CA
- 512 Austin, TX
- 516 Hempstead, NY
Browse ZIP codes by state
- Alabama 811
- Alaska 273
- Arizona 530
- Arkansas 706
- California 2,593
- Colorado 645
- Connecticut 429
- Delaware 96
- District of Columbia 277
- Florida 1,473
- Georgia 952
- Hawaii 137
- Idaho 320
- Illinois 1,575
- Indiana 968
- Iowa 1,055
- Kansas 748
- Kentucky 946
- Louisiana 719
- Maine 485
- Maryland 605
- Massachusetts 685
- Michigan 1,159
- Minnesota 992
- Mississippi 531
- Missouri 1,157
- Montana 404
- Nebraska 620
- Nevada 254
- New Hampshire 281
- New Jersey 723
- New Mexico 427
- New York 2,154
- North Carolina 1,081
- North Dakota 407
- Ohio 1,416
- Oklahoma 765
- Oregon 481
- Pennsylvania 2,176
- Rhode Island 90
- South Carolina 534
- South Dakota 385
- Tennessee 785
- Texas 2,600
- Utah 347
- Vermont 308
- Virginia 1,214
- Washington 716
- West Virginia 851
- Wisconsin 896
- Wyoming 195
Tools
How the codes work
Two explanations, written once for the whole platform rather than repeated on every entity page: what an area code is and why numbers get overlaid, and how ZIP codes are built and what the first three digits mean.