ZIP Code 21770
About Monrovia
Monrovia is an unincorporated community and census-designated place (CDP) in Frederick County, in the U.S. state of Maryland. As of the 2020 census it had a population of 2,702.
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Area Profile
US Census (ACS 5-year · Gazetteer)
7,815
population
$184,464
median household income
683
people / sq mi
$599,700
median home value
41.2
median age
2,448
housing units
2,394
households
11.4
land area (sq mi)