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zipcodes.pro — CITY/MD/MONROVIA

Monrovia ZIP code, Maryland

The ZIP code for Monrovia, MD is 21770, and its area codes are 240 and 301.

USPS city name
1 ZIP code
Population
3,568
Area codes
240, 301

NANPA lists no telephone rate centre for Monrovia itself, so these are the area codes of the nearest one, New Market (4.3 miles). A town on an area-code boundary can differ from its neighbour.

Monrovia in numbers

About 3,568 people live in Monrovia, in 1,041 households. The median household income is $207,153 a year, 2.0 times the Maryland median of $103,678 (US: $80,734). The median owner-occupied home is valued at $805,100 (92% above the Maryland median). The median age is 38.1; 72.3% of adults 25 and over hold a bachelor's degree or higher (43.4% across Maryland); the average commute takes 37 minutes.

Population3,568Monrovia3,568
Households1,041Monrovia1,041
Median age38.1Monrovia38.1Maryland39.4US 38.9
Median household income$207,153Monrovia$207,153Maryland$103,678US $80,734
Median home value$805,100Monrovia$805,100Maryland$419,900US $332,700
Bachelor's degree or higher72.3%Monrovia72.3%Maryland43.4%US 35.7%
Mean commute37.3 minMonrovia37.3 minMaryland31.1 minUS 26.4 min
Population density1,589 / sq miMonrovia1,589 / sq mi

U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, for the census place Monrovia CDP. Survey estimates carry margins of error, wider for small places. Sources and methods.

ZIP codes addressed as Monrovia

ZIP codes with the USPS city name Monrovia
ZIP City Type Population Median income Median home
21770 Monrovia , MD Standard 8,751 $183,571 $632,500

Map of Monrovia ZIP codes

21770

The ZIP codes of Monrovia, MD, shaded. Outlines are Census ZIP Code Tabulation Areas (2020), which approximate the mail routes; PO-box and single-address codes have no area and are not drawn. Click any area to open its ZIP code.

Towns near Monrovia

The nearest larger towns are Green Valley (13,602 people, 2.2 mi), Linganore (14,444 people, 4.0 mi) and Urbana (14,260 people, 4.3 mi).

Towns near Monrovia
TownPopulationDistance
Green Valley 13,602 2.2 mi
Linganore 14,444 4.0 mi
Urbana 14,260 4.3 mi
Bartonsville 3,282 4.6 mi
Spring Ridge 5,922 4.7 mi
Mount Airy 9,805 6.6 mi
Damascus 17,640 7.4 mi
Ballenger Creek 26,390 7.9 mi
Frederick 83,395 9.1 mi
Walkersville 6,414 9.2 mi
Clarksburg 30,487 9.4 mi
Braddock Heights 2,892 12.2 mi
Montgomery Village 34,110 12.4 mi
Germantown 90,719 12.8 mi

More nearby: every ZIP code in Frederick County · Maryland ZIP codes

Cite this page

zipcodes.pro. “Monrovia, MD ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/city/md/monrovia

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