20878   Zip Code Gaithersburg Montgomery MD United States

City Gaithersburg
County Montgomery
State Maryland
Latitude 39.11376
Longitude -77.24781
Population 66,115
Density 3233.94 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: $144,313
Median individual: $73,136

Race

Mode: 45.5% White

Gender

 52.1% female 

Rent

  $2226 / month  

Median house value: $720,942.0

Age

Median: 41.4 years old

Education

With at least college degree: 70.3%
With STEM degree: 60.9%

Marital Status

 57.9% married 

Never married: 29.7%

Labor Force Participation

 71.4% working 

Unemployed: 4.0%

Average Family Size

 3.20 people 

Commute Time

 29.4 minutes 

Health Care

 6.4% uninsured 

Poverty

 5.2%

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

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