20877   Zip Code Gaithersburg Montgomery MD United States

City Gaithersburg
County Montgomery
State Maryland
Latitude 39.14068
Longitude -77.18865
Population 38,546
Density 6835.23 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: $92,800
Median individual: $38,760

Race

Mode: 21.4% White

Gender

 50.1% male 

Rent

  $1887 / month  

Median house value: $473,742.0

Age

Median: 36.8 years old

Education

With at least college degree: 33.4%
With STEM degree: 54.8%

Marital Status

 44.3% married 

Never married: 39.7%

Labor Force Participation

 70.4% working 

Unemployed: 6.2%

Average Family Size

 3.69 people 

Commute Time

 30.7 minutes 

Health Care

 22.0% uninsured 

Poverty

 12.0%

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

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