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US State Coverage

Maryland

Browse all 5 active Area Codes serving the state of Maryland.

Home › Maryland

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Capital City

Capital

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22,743,147

Population

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1873

Statehood

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Active Codes

Geographic Coverage

All Maryland Area Codes

240 View Details 301 View Details 410 View Details 443 View Details 667 View Details

About Maryland

Maryland is served by 5 unique area codes. Major metropolitan areas like Baltimore typically have multiple overlays to support high demand.

Telecommunications Context

The telecommunications history of Maryland is a fascinating journey of growth and innovation. As one of the key regions in the national numbering plan, this area has seen numerous shifts from early manual exchanges to today's high-speed digital networks. Served by multiple area codes, Maryland continues to lead in connectivity, supporting both urban hubs and rural communities. Each area code within the state represents a unique geographic and economic sector, contributing to the overall connectivity of the nation.