20659   Zip Code Mechanicsville St. Mary's MD United States

City Mechanicsville
County St. Mary's
State Maryland
Latitude 38.41886
Longitude -76.73238
Population 24,324
Density 250.78 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: $121,654
Median individual: $60,311

Race

Mode: 86.2% White

Gender

 50.1% male 

Rent

  $1527 / month  

Median house value: $416,039.0

Age

Median: 37.5 years old

Education

With at least college degree: 27.5%
With STEM degree: 41.6%

Marital Status

 57.5% married 

Never married: 29.4%

Labor Force Participation

 68.3% working 

Unemployed: 2.7%

Average Family Size

 3.32 people 

Commute Time

 40.8 minutes 

Health Care

 7.6% uninsured 

Poverty

 7.5%

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

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