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USA Cities & Listing Area Codes

Welcome to our directory of area codes by city across the United States. This page allows you to quickly locate the area code for any U.S. city, providing an easy reference for those looking to identify or verify phone codes. Browse through the cities listed below to find detailed area code information tailored to each location.

USA Cities & Area Codes

Opelousas (LA)

Opelousas (LA)

Opelousas, located in St. Landry Parish, Louisiana, serves as a significant cultural and economic hu…
Opportunity (WA)

Opportunity (WA)

Opportunity, Washington, is an unincorporated community located in Spokane County, nestled within th…
Orange (CA)

Orange (CA)

Orange, California, located in Orange County, is a city with a rich history and distinct characteris…
Orangevale (CA)

Orangevale (CA)

Orangevale, California, is an unincorporated community located in Sacramento County, nestled between…
Orcutt (CA)

Orcutt (CA)

Orcutt, California, is a census-designated place located in Santa Barbara County, adjacent to the ci…
Oregon City (OR)

Oregon City (OR)

Oregon City, located in Clackamas County, Oregon, is recognized as one of the oldest cities west of …
Orem (UT)

Orem (UT)

Orem, located in Utah County, Utah, is a city that serves as a significant hub in the Provo-Orem met…
Orland Park (IL)

Orland Park (IL)

Orland Park, located in Cook and Will Counties, Illinois, is a suburban community approximately 25 m…
Orlando (FL)

Orlando (FL)

Orlando, located in Central Florida, is the county seat of Orange County and has a population of app…
Ormond Beach (FL)

Ormond Beach (FL)

Ormond Beach, located in Volusia County, Florida, is a coastal city bordered by the Atlantic Ocean t…
Oro Valley (AZ)

Oro Valley (AZ)

Oro Valley, located in Pima County, Arizona, is a suburb of Tucson that spans approximately 35 squar…
Oshkosh (WI)

Oshkosh (WI)

Oshkosh, located in Winnebago County, Wisconsin, is a city with a storied history that dates back to…
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  • How do I find the area code for a specific U.S. city?

    Simply scroll through our city listings or use the search feature to find the city you’re looking for. Each city entry includes the area code(s) that correspond to that location.

  • Do some cities have multiple area codes?

    Yes, larger cities or those in regions with high demand often have multiple area codes. This allows for a greater number of phone numbers within the same geographic area and helps accommodate growth in highly populated locations.

  • Why might a city’s area code change or gain additional codes?

    Area codes are added or changed as cities grow and require more phone numbers. This often results in overlay codes or splits, where new area codes are introduced alongside existing ones to ensure adequate numbering for all residents and businesses.

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