21104   Zip Code Marriottsville Howard MD United States

City Marriottsville
County Howard
State Maryland
Latitude 39.35044
Longitude -76.90654
Population 6,052
Density 354.92 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: $191,804
Median individual: $74,542

Race

Mode: 75.5% White

Gender

 50.0% female 

Rent

  $1384 / month  

Median house value: $678,389.0

Age

Median: 43.1 years old

Education

With at least college degree: 64.4%
With STEM degree: 56.4%

Marital Status

 66.8% married 

Never married: 23.0%

Labor Force Participation

 72.5% working 

Unemployed: 3.2%

Average Family Size

 3.20 people 

Commute Time

 31.9 minutes 

Health Care

 5.3% uninsured 

Poverty

 2.7%

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

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