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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.

Germantown Maryland map

Other Cities That Use 240 Area Code

Area Codes Starting with 2

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Phone Number Prefixes In The 240 Area Code