ZIP code · Monrovia · Maryland · United States

ZIP code 21770 — Monrovia

Name: Monrovia (21770)
Address: Maryland, 21770, US

ZIP code 21770 serves Monrovia, Maryland.

Postal code: 21770
Single source Value from one source, not cross-checked.
City: Monrovia
County: Frederick
State: Maryland
Country: United States
Coordinates: 39.3512, -77.2494 — precision precise (locality)
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Nearby localities

21754Ijamsville · 4.9 km
21774New Market · 6.9 km
21771Mount Airy
20872Damascus · 8.9 km
21704Frederick · 12 km
20871Clarksburg · 13 km
21701Frederick · 13 km
21762Libertytown · 15 km
21792Unionville · 15 km
21765Lisbon · 15 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