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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

240 Area Code Scam & Spam Report

Sep 2026
0spam reports this month
1.9%of (240) numbers have reports
Othermost reported scam type
1.9%(240)
—State
—United States

Counts describe reported call activity, not the people who hold these numbers.

12-MONTH TREND

MOST COMMON SCAMS REPORTED

Other43%
IRS / tax26%
Scam (other)9%
Car warranty6%

Sources: community reports across our network, FTC Do Not Call complaints (unverified consumer reports), carrier records. Updated automatically.

Area Codes Starting with 2

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Run a 240 Area Code Phone Lookup in Seconds

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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