Knox
Source:
Maine
Knox is a smaller county in Maine with 19 ZIP codes, 39,736 people, and upper-quartile household income among US counties. All data is sourced from the U.S. Census Bureau American Community Survey (ACS) 2023 5-Year Estimates.
National county placement
According to ACS 5-Year Estimates, Knox, ME sits among US counties with an upper-quartile household income, on a smaller county population base, across a multi-ZIP patchwork.
- Top 17%
- household income vs 3,210 US counties
- 39,736
- combined ZIP population
- 19
- USPS ZIP codes covered
- $84,112
- avg ZIP median income
Income percentile ranks this county's average ZIP median household income against 3,210 US counties with ACS income on at least one ZIP.
Knox lands in the national county income distribution as upper-quartile household income on smaller county footing (FIPS 23013, 19 ZIPs, combined population 39,736). Sort the ZIP table by population before treating the county mean as uniform.
High-income counties with wide ZIP mosaics hide sharp internal gradients. The densest ZIP here is 04841 (Rockland) with 7,297 residents - open it beside a thin rural code from the table before treating the county mean as uniform. HUD Fair Market Rents and FBI county tables attach to FIPS 23013, so scorecards stay county-keyed while household income stays ZIP-keyed.
Save two ZIPs from the table into your shortlist, then open a compare link - that is the return path a static county summary cannot replace. All figures here come from Census ACS 2023 5-Year Estimates and USPS ZCTA files.
19
Total ZIPs
39,736
Total Population
ZIP Codes in Knox
Side-by-side: Compare 04841 vs 04843 →
| ZIP Code | City | Population | Density |
|---|---|---|---|
| 04841 | Rockland | 7,297 | 219 |
| 04843 | Camden | 4,851 | 101 |
| 04864 | Warren | 4,751 | 40 |
| 04862 | Union | 3,592 | 21 |
| 04856 | Rockport | 3,330 | 59 |
| 04861 | Thomaston | 2,781 | 98 |
| 04860 | Tenants Harbor | 1,591 | 34 |
| 04854 | Owls Head | 1,580 | 69 |
| 04847 | Hope | 1,536 | 27 |
| 04563 | Cushing | 1,534 | 31 |
| 04858 | South Thomaston | 1,533 | 52 |
| 04574 | Washington | 1,510 | 15 |
| 04863 | Vinalhaven | 1,165 | 19 |
| 04547 | Friendship | 1,152 | 32 |
| 04859 | Spruce Head | 724 | 42 |
| 04853 | North Haven | 354 | 12 |
| 04855 | Port Clyde | 307 | 51 |
| 04851 | Matinicus | 75 | 13 |
| 04645 | Isle Au Haut | 73 | 2 |
Frequently Asked Questions
What is the population of Knox?
Knox has a total population of 39,736 across 19 ZIP codes, based on U.S. Census Bureau ACS 2023 data.
What ZIP codes are in Knox?
Knox includes 19 ZIP codes: 04841, 04843, 04864, 04862, 04856, 04861, 04860, 04854, 04847, 04563, and more.