21770   Zip Code Monrovia Frederick MD United States

City Monrovia
County Frederick
State Maryland
Latitude 39.35245
Longitude -77.25791
Population 8,751
Density 764.51 people per square mile
Time Zone America/New York
  • All demographic data comes from the 2024 American Community Survey (5-year study).
  • Learn more about each field.
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Household Income

Median household: $183,571
Median individual: $68,686

Race

Mode: 72.4% White

Gender

 51.0% female 

Rent

No data available.

Age

Median: 39.8 years old

Education

With at least college degree: 54.8%
With STEM degree: 48.0%

Marital Status

 70.4% married 

Never married: 20.7%

Labor Force Participation

 68.3% working 

Unemployed: 2.8%

Average Family Size

 3.52 people 

Commute Time

 35.2 minutes 

Health Care

 1.6% uninsured 

Poverty

 1.5%

All data comes from the SimpleMaps US Zips Comprehensive Database, February 2026.

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