Potomac, Maryland

Potomac, Maryland
Location of Potomac in Maryland
Coordinates: 39°00′12″N 77°12′20″W / 39.00333°N 77.20556°W / 39.00333; -77.20556
Country United States
State Maryland
CountyMontgomery
First settled1714 (1714)
Area
 • Total
26.58 sq mi (68.85 km2)
 • Land25.14 sq mi (65.12 km2)
 • Water1.44 sq mi (3.73 km2)
Elevation
292 ft (89 m)
Population
 (2020)
 • Total
47,018
 • Density1,869.9/sq mi (721.99/km2)
Time zoneUTC−5 (Eastern (EST))
 • Summer (DST)UTC−4 (EDT)
ZIP Codes
20854, 20859
Area codes301, 240
FIPS code24-63300
GNIS feature ID2389701

Potomac (/pəˈtmək/ ) is an unincorporated community and census-designated place in Montgomery County, Maryland, United States. As of the 2020 census, it had a population of 47,018. It is named after the nearby Potomac River. A part of the Washington metropolitan area, many Potomac residents work in nearby Washington, D.C., and Northern Virginia.