Knox County, Maine ZIP Codes
- ZIP records
19 - Cities represented
19 - Sum of listed ZIP population estimates
41,003
Population sum includes positive estimates in these ZIP records; it is not an official county population.
Top ZIP Codes by Population
| Rank | ZIP Code | City | Population estimate |
|---|---|---|---|
| 1 | 04841 | Rockland | 7,035 |
| 2 | 04843 | Camden | 5,242 |
| 3 | 04864 | Warren | 4,932 |
| 4 | 04862 | Union | 4,023 |
| 5 | 04856 | Rockport | 3,675 |
| 6 | 04861 | Thomaston | 2,769 |
| 7 | 04847 | Hope | 1,748 |
| 8 | 04574 | Washington | 1,624 |
| 9 | 04860 | Tenants Harbor | 1,543 |
| 10 | 04854 | Owls Head | 1,482 |
Cities in Knox County
- Camden
- Cushing
- Friendship
- Hope
- Isle Au Haut
- Matinicus
- North Haven
- Owls Head
- Port Clyde
- Rockland
- Rockport
- South Thomaston
- Spruce Head
- Tenants Harbor
- Thomaston
- Union
- Vinalhaven
- Warren
- Washington
ZIP Directory
- ZIP 04547
- ZIP 04563
- ZIP 04574
- ZIP 04645
- ZIP 04841
- ZIP 04843
- ZIP 04847
- ZIP 04851
- ZIP 04853
- ZIP 04854
- ZIP 04855
- ZIP 04856
- ZIP 04858
- ZIP 04859
- ZIP 04860
- ZIP 04861
- ZIP 04862
- ZIP 04863
- ZIP 04864
Methodology: Records are grouped by the source file's listed county and state. Population sums add positive ZIP-level estimates and are not official county totals; city counts use distinct city labels in the source.