ZIP code · Potomac · Maryland · United States

ZIP code 20859 — Potomac

Name: Potomac (20859)
Address: Maryland, 20859, US

ZIP code 20859 serves Potomac, Maryland.

Postal code: 20859
Single source Value from one source, not cross-checked.
City: Potomac
County: Montgomery
State: Maryland
Country: United States
Coordinates: 39.1440, -77.2076 — precision precise (locality)
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Nearby localities

20899Gaithersburg · 1.3 km
20877Gaithersburg · 1.6 km
20880Washington Grove · 3.1 km
20879Gaithersburg · 3.7 km
20886Montgomery Village · 3.9 km
20885Gaithersburg · 4.8 km
20878Gaithersburg · 5.2 km
20855Derwood · 5.3 km
20876Germantown · 5.5 km
20874Germantown · 6.5 km

About this page

US ZIP codes have five digits. They are postal routing areas, not administrative boundaries: a ZIP can span more than one city or county, and the city shown is the primary USPS name for that code.

GeoNames. Data generated on 2026-08-21. Methodology · Report an error on this page