Background: Basic Knowledge of US Phone Numbers
The United States is one of the world’s largest single economies, and its telecommunications-related economic activities play a significant role. To conduct market or other business operations in the U.S., it’s essential to understand the basics of American phone numbers. This article will introduce you to U.S. phone area codes, including the definition of international dialing codes, city area codes, and common U.S. state and city area codes, while also providing a comprehensive directory of U.S. phone numbers.
U.S. Phone International Dialing Code
Almost every country and region has its own international dialing code. The international dialing code for U.S. phone numbers is 1. If you’re making an international call or sending an international SMS to the U.S., you should prefix the number with the international dialing code 1.
Definition of U.S. City Area Codes
U.S. city area codes are the three-digit numbers at the beginning of phone numbers for each city or region. These area codes represent the telephone network equipment for that area. This means that if you want to call a phone number in a specific U.S. location, you need to know its area code.
Common U.S. State Area Codes
The U.S. has 50 states, each with its own phone area codes. Below are some common U.S. state area codes:
【Eastern Region】
New York (NY)
- 212/646/332 – Manhattan
- 315 – Syracuse, Utica
- 347/718/929 – New York City (Brooklyn, Queens, Bronx, Staten Island)
- 516/631 – Long Island (Nassau County, Suffolk County)
- 518 – Albany, Saratoga Springs
- 585 – Rochester
- 607 – Binghamton
- 716 – Buffalo, Niagara Falls
- 845 – Hudson Valley (Poughkeepsie, Newburgh)
- 914 – Westchester County (White Plains, Yonkers)
New Jersey (NJ)
- 201/551 – Jersey City, Hoboken (Northeast)
- 609/640 – Trenton, Atlantic City
- 732/848 – New Brunswick, Jersey Shore
- 856 – Camden, Cherry Hill (South)
- 908 – Elizabeth, Somerville
- 973/862 – Newark, Paterson (North)
Pennsylvania (PA)
- 215/267/445 – Philadelphia
- 412/878 – Pittsburgh
- 484/610 – Allentown, Reading
- 570/272 – Scranton, Williamsport
- 717/223 – Harrisburg, Lancaster
- 724/878 – Pittsburgh suburbs (Greensburg, Washington)
- 814/582 – Erie, Johnstown
【Southern Region】
Florida (FL)
- 305/786 – Miami, Key West
- 321/407/689 – Orlando, Cocoa Beach
- 352 – Gainesville, Ocala
- 386 – Daytona Beach, Tallahassee area
- 561/728 – West Palm Beach, Boca Raton
- 727 – Tampa Bay (Clearwater, St. Petersburg)
- 754/954 – Fort Lauderdale, Pompano Beach
- 813 – Tampa
- 850 – Tallahassee, Pensacola
- 863 – Lakeland, Sebring
- 904 – Jacksonville
- 941 – Sarasota, Bradenton
- 239 – Naples, Fort Myers
Texas (TX)
- 210 – San Antonio
- 214/469/972 – Dallas and surrounding areas
- 254 – Waco, Killeen
- 281/346/713/832 – Houston
- 325 – Abilene
- 361 – Corpus Christi, Victoria
- 409 – Beaumont, Galveston
- 430/903 – Tyler, Longview (East)
- 432 – Midland, Odessa (West)
- 512/737 – Austin
- 682/817 – Fort Worth, Arlington
- 806 – Amarillo, Lubbock
- 830 – New Braunfels, Uvalde
- 832 – Houston (overlay)
- 915 – El Paso
- 936 – Huntsville, Nacogdoches
- 940 – Denton, Wichita Falls
- 956 – Laredo, Brownsville
- 979 – Bryan, College Station
【Midwestern Region】
Illinois (IL)
- 217 – Champaign, Springfield
- 224/847 – Chicago northern suburbs (Evanston, Arlington Heights)
- 309 – Peoria, Bloomington
- 312/872 – Chicago downtown
- 331/630 – Aurora, Naperville (western suburbs)
- 618 – Carbondale, East St. Louis
- 708 – Chicago southwestern suburbs (Oak Lawn, Cicero)
- 773 – Chicago (non-downtown areas)
- 815/779 – Rockford, DeKalb
- 872 – Chicago (overlay with 312/773)
Ohio (OH)
- 216/440 – Cleveland
- 234/330 – Akron, Canton
- 419/567 – Toledo
- 513/283 – Cincinnati
- 614/380 – Columbus
- 740/220 – Athens, Newark
- 937/326 – Dayton, Springfield
【Western Region】
California (CA)
(36 area codes, partial listing)
- 209/350 – Stockton, Modesto
- 213/323 – Los Angeles downtown
- 310/424 – Los Angeles west (Santa Monica, Beverly Hills)
- 408/669 – San Jose
- 415/628 – San Francisco
- 510/341 – Oakland, Berkeley
- 530 – Redding, Chico
- 559 – Fresno
- 562 – Long Beach
- 619/858 – San Diego
- 626 – Pasadena
- 650 – Silicon Valley (Palo Alto, Redwood City)
- 661 – Bakersfield
- 707 – Santa Rosa, Eureka
- 714/657 – Orange County (Anaheim)
- 760/442 – Palm Springs, eastern San Bernardino
- 805/820 – Santa Barbara, Ventura
- 818/747 – Los Angeles (San Fernando Valley)
- 831 – Salinas, Monterey
- 909 – San Bernardino
- 916/279 – Sacramento
- 925 – Concord, Walnut Creek
- 949 – Irvine, Newport Beach
Common U.S. City Area Codes
Here are some of the most common U.S. city area codes:
- New York: 212, 718, 917, 646
- Los Angeles: 213, 310, 323, 424, 626, 818, 949
- Philadelphia: 215, 267, 484, 610, 856
- Washington, D.C.: 202, 240, 301, 410, 443
U.S. Phone Number Directory
When using U.S. phone services, you may often need to look up certain phone numbers, such as emergency numbers or business contacts. A U.S. Phone Number Directory can help with this. IntBell provides a comprehensive U.S. phone number directory, including emergency numbers, hospital contacts, hotel numbers, airport information, and other business/service numbers. You can visit IntBell’s official website to access this information.
Conclusion
To conduct business in the U.S., it’s crucial to understand the basics of American phone numbers, including international dialing codes, city area codes, and phone directories. Knowing U.S. area codes ensures proper dialing and effective communication. IntBell is a reliable international telecom platform offering complete calling and SMS solutions, with coverage in nearly 100 countries and regions, including extensive U.S. business number resources.
If you’d like to explore more U.S. phone numbers, check out the Complete U.S. Area Code Directory.
