240 Area Code

Area code 240 is an area code that covers Western Maryland, specifically the part of Maryland that is included in the Washington DC metro area. Area code 240 overlays the area code of 301.

Maryland has area codes of 227, 240, 301, 410, 443, 667.

Counties that Use 240 Area Code

Major Cities that Use 240 Area Code

All Cities & Towns that Use 240 Area Code

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Where is 240 area code?

The following map shows the coverage of 240 area code. The coverage area is shown in green.

Area code map of the entire U.S.