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240 Area Code: Location, Time Zone & Phone Lookup

(240)
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What Does Area Code 240 Mean?

Area code 240 is located in western Maryland and covers Germantown, Silver Spring, Waldorf, Frederick, and Rockville. It is an overlay for area code 301 and serves the same area.

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Area Codes Starting with 2

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Area code 240 is located in Maryland and serves the western part of the state. This area code was created in 1995 and is currently in use. 240 covers a population of over 4 million people and over 5,000 businesses. The area code is surrounded by area codes 410, 301, and 703.

240 is located in the Eastern Time Zone.

Phone Number Prefixes In The 240 Area Code