Map of Potomac, United States

Potomac is a city in Maryland, United States, with a population of about 44,965. It lies at 39.0182°N, 77.2086°W, about 110 m above sea level. Potomac is about 20 km (13 mi) northwest of Washington, D.C., the capital. The nearest city on our map is North Bethesda, 8 km to the east.

Potomac at a glance

Where is Potomac?

• The 18th largest city in Maryland on this site.
• Located in the Northern and Western hemispheres.
• Daylight ranges from about 9 h 25 min on the shortest day to 14 h 55 min on the longest day (around 21 December and 21 June).

Cities near Potomac

• North Bethesda — 8 km east
• Rockville — 9 km northeast
• McLean — 10 km south
• Bethesda — 10 km southeast
• Reston — 13 km southwest
• Aspen Hill — 14 km northeast
• Gaithersburg — 14 km north
• Silver Spring — 16 km east
• Oakton — 17 km southwest
• Arlington — 18 km southeast

Largest cities in Maryland

• Baltimore — 585,708
• Columbia — 99,615
• Germantown — 86,395
• Silver Spring — 71,452
• Frederick — 69,479
• Waldorf — 67,752
• Glen Burnie — 67,639
• Gaithersburg — 67,456
• Rockville — 66,980
• Ellicott City — 65,834

Largest cities in United States

• New York City — 8,804,190
• Los Angeles — 3,820,914
• Brooklyn — 2,736,074
• Chicago — 2,664,452
• Queens — 2,316,841
• Houston — 2,314,157
• Phoenix — 1,650,070
• Philadelphia — 1,573,916
• San Antonio — 1,526,656
• Manhattan — 1,487,536

Map of United States and all its cities →

Sources: place names, coordinates, populations and time zones from GeoNames (CC BY 4.0, data retrieved October 2026). Population figures are the latest values recorded in GeoNames; depending on the country they refer to the city proper, a municipality or a wider urban area, so they can differ from census or metro-area figures. Map © OpenStreetMap contributors.