04259   Zip Code Monmouth Kennebec ME United States

City Monmouth
County Kennebec
State Maine
Latitude 44.22762
Longitude -70.00868
Population 3,610
Density 124.61 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: $83,919
Median individual: $42,407

Race

Mode: 95.2% White

Gender

 54.4% male 

Rent

  $1249 / month  

Median house value: $298,971.0

Age

Median: 46.0 years old

Education

With at least college degree: 34.6%
With STEM degree: 44.5%

Marital Status

 59.8% married 

Never married: 22.4%

Labor Force Participation

 67.1% working 

Unemployed: 0.2%

Average Family Size

 2.84 people 

Commute Time

 28.7 minutes 

Health Care

 6.2% uninsured 

Poverty

 8.1%

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

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