21757   Zip Code Keymar Carroll MD United States

City Keymar
County Carroll
State Maryland
Latitude 39.59902
Longitude -77.25906
Population 2,671
Density 75.91 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: $100,500
Median individual: $52,258

Race

Mode: 90.6% White

Gender

 55.0% male 

Rent

  $1408 / month  

Median house value: $469,375.0

Age

Median: 37.8 years old

Education

With at least college degree: 29.5%
With STEM degree: 63.3%

Marital Status

 53.5% married 

Never married: 28.8%

Labor Force Participation

 71.7% working 

Unemployed: 3.2%

Average Family Size

 3.02 people 

Commute Time

 31.4 minutes 

Health Care

 2.4% uninsured 

Poverty

 1.7%

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

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