ZIP code · Gaithersburg · Maryland · United States

ZIP code 20878 — Gaithersburg

Name: Gaithersburg (20878)
Address: Maryland, 20878, US

ZIP code 20878 serves Gaithersburg, Maryland.

Postal code: 20878
Single source Value from one source, not cross-checked.
City: Gaithersburg
County: Montgomery
State: Maryland
Country: United States
Coordinates: 39.1125, -77.2515 — precision precise (locality)
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Nearby localities

20874Germantown · 3.7 km
20899Gaithersburg · 4.0 km
20813Bethesda · 5.2 km
20827Bethesda · 5.2 km
20889Bethesda · 5.2 km
20894Bethesda · 5.2 km
20884Gaithersburg · 5.2 km
20898Gaithersburg · 5.2 km
20875Germantown · 5.2 km
20859Potomac · 5.2 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