Where is Area Code 240?

Located in the state of Maryland (MD)

Area Code 240


Area Code 240

The 240 Area Code is located in the state of Maryland. Area Code 240 is one of the 312 three-digit telephone area codes in the USA. It covers roughly 350,725 unique phone numbers and 7,359,044 individuals near the cities of Washington-Arlington-Alexandria.
State:Maryland (MD)
Metro Area
Metro Area:Washington-Arlington-Alexandria
Estimated Population
Est. Population:7,359,044
Nearby Area Codes
Nearby Area Codes:202, 240, 301, 304, 410, 443, 540, 571, 667, 681, 703
Phone Prefixes
Phone Prefixes:578
Phone Numbers
Phone Numbers: 350,725

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