– phone area 240-510
📌Upper Marlboro, MD
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Area code 240-510 is assigned to Upper Marlboro, MD.

Main city: Upper Marlboro
Timezone: Eastern
Phone type: Landline
Operator: Xo Maryland

Upper Marlboro, a town in and the county seat of Prince George's County, Maryland in the United States. The population within the town limits was 631 at the 2010 U.S. Census, although Greater Upper Marlboro is many times larger. source

North American area codes 240 and 301 are telephone area codes for the western half of Maryland. They serve Maryland's portion of the Greater Washington, D.C. metro area, portions of southern Maryland, and all points northwest of Washington. This includes the communities of Cumberland, Frederick, Hagerstown, and Gaithersburg. source

Phone number full length is 10 digits: (240) 510-xxxx

International format length is 11 digits: +1 (240) 510-xxxx

Number can be also written as: 240-510, 240510, +1-240-510

Most requested numbers in the neighborhood:
240-510-8340, 240-510-8023, 240-510-6385, 240-510-2787, 240-510-1673