Knox County, ME ZIP Codes
19 ZIP codes cover all or part of Knox County, Maine. The Census Bureau counts 41,003 residents in the county, with a median household income of $74,096 and a median home value of $324,900. Median household income ranges from $56,435 in 04861 to $87,325 in 04854. Its largest communities include Rockland, Camden and Thomaston.
Knox County (Census county figures)
| Measure | Census figure |
|---|---|
| Residents | 41,003 |
| Households | 18,484 |
| Median household income | $74,096 |
| Median home value | $324,900 |
| Median age | 49.5 |
| Median rent | $1,165 |
All 19 ZIP codes together
| Measure | Value |
|---|---|
| Residents (sum of ZIP codes) | 41,003 |
| Households (sum of ZIP codes) | 18,484 |
| Median household income, range across ZIP codes | $56,435 (04861) to $87,325 (04854) |
| Household-weighted average of ZIP medians (an approximation, not a true median) | $73,229 |
| Homeowners | 78.7% |
| Households with kids under 18 | 20.2% |
| Moved in the past year | 9.7% |
| Carrier routes in EDDM2GO's route library | 41 routes, 16,934 homes (16 of 19 ZIP codes) |
Top facts
- Highest median household income in Knox County: 04854 ($87,325)
- Most residents: 04841 (7,035 people)
- Highest homeownership: 04847 (92.9% own their home)
- Most households with kids: 04847 (37.4% of households)
- Most new movers: 04860 (18.6% moved in last year)
- Youngest median age: 04864 (42.2 years)
- Highest median home value: 04843 ($520,600)
Every ZIP code in Knox County
| ZIP | Mailing city | Residents | Households | Median income | Home value | Homeowners | With kids | New movers | Carrier routes | Mailboxes | Why listed |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 04841 | Rockland | 7,035 | 3,565 | $56,533 | $245,800 | 62.0% | 14.8% | 13.0% | 8 | 4,041 | 100% of its land |
| 04843 | Camden | 5,242 | 2,474 | $82,344 | $520,600 | 73.5% | 18.2% | 9.0% | 7 | 2,928 | 100% of its land |
| 04864 | Warren | 4,932 | 1,645 | $74,616 | $232,700 | 81.3% | 26.4% | 13.4% | 4 | 1,694 | 100% of its land |
| 04862 | Union | 4,023 | 1,725 | $73,536 | $252,300 | 84.6% | 23.9% | 3.1% | 3 | 1,445 | 100% of its land |
| 04856 | Rockport | 3,675 | 1,498 | $86,979 | $469,000 | 84.5% | 28.4% | 7.3% | 3 | 1,761 | 100% of its land |
| 04861 | Thomaston | 2,769 | 1,420 | $56,435 | $271,700 | 73.9% | 15.3% | 17.8% | 4 | 1,343 | 100% of its land |
| 04847 | Hope | 1,748 | 695 | $86,766 | $373,400 | 92.9% | 37.4% | 5.7% | 1 | 228 | 100% of its land |
| 04574 | Washington | 1,624 | 684 | $59,861 | $195,200 | 92.5% | 22.5% | 3.4% | 2 | 715 | 100% of its land |
| 04860 | Tenants Harbor | 1,543 | 816 | $86,833 | $271,400 | 83.1% | 17.8% | 18.6% | 2 | 647 | 100% of its land |
| 04854 | Owls Head | 1,482 | 669 | $87,325 | $413,300 | 81.6% | 14.5% | 10.2% | 1 | 782 | 100% of its land |
| 04563 | Cushing | 1,460 | 686 | $83,500 | $409,800 | 84.7% | 19.0% | 9.5% | 1 | 517 | 100% of its land |
| 04858 | South Thomaston | 1,378 | 608 | $87,059 | $341,300 | 92.9% | 23.8% | 9.5% | 1 | 567 | 100% of its land |
| 04863 | Vinalhaven | 1,216 | 628 | $72,963 | $428,400 | 86.6% | 13.2% | 4.4% | 1 | 431 | 100% of its land |
| 04547 | Friendship | 1,213 | 553 | $75,625 | $275,000 | 91.1% | 19.2% | 7.0% | 1 | 452 | 100% of its land |
| 04859 | Spruce Head | 753 | 349 | $75,341 | — | 84.5% | 25.2% | 0.0% | 1 | 280 | 100% of its land |
| 04853 | North Haven | 480 | 206 | $87,500 | $440,200 | 82.0% | 23.8% | 4.9% | 1 | 213 | 100% of its land |
| 04855 | Port Clyde | 313 | 194 | $250,000+ | $358,100 | 100.0% | 0.0% | 1.9% | — | — | 100% of its land |
| 04645 | Isle Au Haut | 69 | 50 | $49,500 | $593,800 | 74.0% | 0.0% | 0.0% | — | — | 100% of its land |
| 04851 | Matinicus | 48 | 19 | $65,417 | $350,000 | 100.0% | 15.8% | 12.5% | — | — | 100% of its land |
A ZIP code is listed for Knox County when at least 10% of its land is in the county, when it holds at least 10% of the county's land, or when the county is its main county. Totals add up whole ZIP codes, including parts that cross the county line; the Census county figures above do not.
Cities and communities
- Rockland — 7,035 residents · 1 ZIP code
- Camden — 3,682 residents · 1 ZIP code
- Thomaston — 2,055 residents · 1 ZIP code
Rankings
- Richest ZIP codes in Knox County — 14 ZIP codes ranked
- ZIP codes with the highest home values in Knox County — 14 ZIP codes ranked
- ZIP codes with the highest homeownership in Knox County — 14 ZIP codes ranked
- ZIP codes with the most families with kids in Knox County — 14 ZIP codes ranked
- ZIP codes with the most new movers in Knox County — 14 ZIP codes ranked
- Youngest ZIP codes in Knox County — 14 ZIP codes ranked
- Oldest ZIP codes in Knox County — 14 ZIP codes ranked
- Fastest-growing ZIP codes in Knox County — 13 ZIP codes ranked
Price a mailing to Knox County ZIP codes
EDDM guides
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Frequently asked questions
- What ZIP codes are in Knox County, ME?
- 04841, 04843, 04864, 04862, 04856, 04861, 04847, 04574, 04860, 04854, 04563, 04858, 04863, 04547, 04859, 04853, 04855, 04645 and 04851. Some cross the county line; the table shows each ZIP's share of land in the county.
- What is the population of Knox County?
- 41,003 residents in 18,484 households (ACS 5-year estimates, 2020–2024).
- What is the median household income in Knox County?
- $74,096 for the county as a whole. Its ZIP codes range from $56,435 (04861) to $87,325 (04854).
- Which Knox County ZIP code has the highest median household income?
- 04854, at $87,325, among ZIP codes with at least 1,000 residents. See the full ranking of Knox County ZIP codes by income.
- How many carrier routes and mailboxes are in Knox County?
- For the 16 of 19 ZIP codes in EDDM2GO's stored route library: 41 carrier routes reaching 16,934 residential and 1,139 business mailboxes. The route map loads the rest when you search them.
This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.