County ProfileME
Knox County
Population: 40,607 · 19 ZIP codes
Demographics
Source: U.S. Census Bureau (ACS/Decennial). Estimates vary by year.
People
Total population
40,607
People
Median age
49.5
Housing
Total households
18,484
Income
Median household income
$74,096
Housing
Total housing units
24,564
Employment
Employment rate
55.7%
Education
Bachelor’s degree or higher
39.7%
Healthcare
Insured population
94.5%
County details
Local time 05:21:55(ET)| Name | Knox |
|---|---|
| Total ZIP codes | 19total |
| ZIP codes (by type) | 16 Standard3 PO Box |
| Area code | 207 |
| Timezone | Eastern Time (ET) |
| Coordinates | 44.0420446, -69.0385145 |
| Land area | 364.9 sq miles(945.1 km²) |
Map of Knox county, Maine with ZIP codes
Cities and Communities in Knox County
Compare the largest cities in Knox County by population, median income, and growth. Use the table below to analyze key demographic shifts across the region.
| City | Population | Median incomeHousehold | ZIP codes |
|---|---|---|---|
| Rockland | 6,936 | $56,533 | 1ZIPs |
| Camden | 3,850 | $78,788 | 1ZIPs |
| Thomaston | 1,836 | $52,133 | 1ZIPs |
| Cushing | — | — | 1ZIPs |
| Friendship | — | — | 1ZIPs |
| Hope | — | — | 1ZIPs |
| Isle Au Haut | — | — | 1ZIPs |
| Matinicus | — | — | 1ZIPs |
| North Haven | — | — | 1ZIPs |
| Owls Head | — | — | 1ZIPs |
| Port Clyde | — | — | 1ZIPs |
| Rockport | — | — | 1ZIPs |
| South Thomaston | — | — | 1ZIPs |
| Spruce Head | — | — | 1ZIPs |
| Tenants Harbor | — | — | 1ZIPs |
| Union | — | — | 1ZIPs |
| Vinalhaven | — | — | 1ZIPs |
| Warren | — | — | 1ZIPs |
| Washington | — | — | 1ZIPs |
— Data unavailable or suppressed by the U.S. Census Bureau for areas with small sample sizes to protect individual privacy.
ZIP Codes in Knox County
Review the most populated postal areas across Knox County. Use the ranking below to compare resident density and demographic scales between the county's major zones.
| ZIP | City | Median incomeHousehold | Population (ZIP) |
|---|---|---|---|
| 04547 | Friendship | — | — |
| 04563 | Cushing | — | — |
| 04574 | Washington | — | — |
| 04645 | Isle Au Haut | — | — |
| 04841 | Rockland | — | — |
| 04843 | Camden | — | — |
| 04847 | Hope | — | — |
| 04851 | Matinicus | — | — |
| 04853 | North Haven | — | — |
| 04854 | Owls Head | — | — |
| 04855 | Port Clyde | — | — |
| 04856 | Rockport | — | — |
| 04858 | South Thomaston | — | — |
| 04859 | Spruce Head | — | — |
| 04860 | Tenants Harbor | — | — |
| 04861 | Thomaston | — | — |
| 04862 | Union | — | — |
| 04863 | Vinalhaven | — | — |
| 04864 | Warren | — | — |
Data Sources & Citations
The geographic and demographic information presented on this site is compiled from publicly available, authoritative sources, including:
- United States Census BureauDemographic, population, housing, and socioeconomic data sourced from Census Bureau datasets, including the Decennial Census and the American Community Survey (ACS).Census Data
- United States Postal Service (USPS)ZIP code classifications, delivery types, and postal designations used for reference purposes. USPS ZIP codes are intended for mail delivery and may not always align exactly with Census geographic boundaries.USPS