Knox County, Maine
21 ZIP codes · Avg score 83/100 · Grade B
ZipCheckup grade for Knox County: B.
This ZIP has a few items worth a quick check.
Knox County: upper grades, 21 ZIPs.
How Knox County Compares
How Knox County Compares
Knox County scores 18 points above the Maine state average (65/100) and 10 points above the national average (73/100).
Data: ZipCheckup Home Safety Score model 4.0.0; EPA SDWIS, UCMR 5, EPA radon zones, EPA AirData
ZIP Code Risk Map
Water Quality Map: Knox County, Maine
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 13.2 (asthma 11.9%, diabetes 11.2%)
Modeled additional annual cost estimate per homeowner: $890, largest modeled factor: Sea Level
58% of homes built before 1980 (lead paint was banned for residential use in 1978)
County Health Indicators vs National Average
Black markers indicate national averages. Source: CDC PLACES, Census ACS.
Infrastructure Overview
Modeled area-level indicator, not a failure probability. Sources: Census ACS housing age, EPA DWINSA infrastructure needs, EPA SDWIS violations, and EPA lead indicators.
Compound Risk Breakdown
Estimated additional annual cost per homeowner: $890
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
24,331 housing units in Knox County
Source: U.S. Census Bureau ACS B25034 (Year Structure Built).
Health Outcomes vs National Average
CDC PLACES data for Knox County residents
Black markers = national averages. Red = above national avg. Green = below. Source: CDC PLACES, Census ACS.
Water systems mapped to Knox County ZIP codes
4 community water systems mapped to Knox County ZIP codes; EPA may list more systems serving the county.
- B
- B
- B
- B
Systems with the most violations in Knox County
1 water system with violations in EPA records.
- B
All ZIP Codes in Knox County
21 ZIP codes tracked in Knox County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 04841 | Rockland | 83 | B | 2 | $234K |
| 2 | 04843 | Camden | 83 | B | 2 | $486K |
| 3 | 04856 | Rockport | 83 | B | 2 | $415K |
| 4 | 04861 | Thomaston | 83 | B | 2 | $260K |
| 5 | 04863 | Vinalhaven | 83 | B | 0 | $436K |
| 6 | 04547 | Friendship | — | — | $265K | |
| 7 | 04563 | Cushing | — | — | $371K | |
| 8 | 04574 | Washington | — | — | $187K | |
| 9 | 04645 | Isle Au Haut | — | — | $663K | |
| 10 | 04847 | Hope | — | — | $302K | |
| 11 | 04850 | Lincolnville Center | — | — | — | |
| 12 | 04851 | Matinicus | — | — | $425K | |
| 13 | 04853 | North Haven | — | — | $405K | |
| 14 | 04854 | Owls Head | — | — | $332K | |
| 15 | 04855 | Port Clyde | — | — | $359K | |
| 16 | 04858 | South Thomaston | — | — | $305K | |
| 17 | 04859 | Spruce Head | — | — | $744K | |
| 18 | 04860 | Tenants Harbor | — | — | $310K | |
| 19 | 04862 | Union | — | — | $237K | |
| 20 | 04864 | Warren | — | — | 0 | $216K |
| 21 | 04865 | West Rockport | — | — | — |
Recommended Buyer Guides for Knox County
Each guide below is listed with the reason it appears.
- Best Lead Paint Test Kits — 58% of homes built before 1980
Deep Dive Reports
Detailed analysis for Knox County, Maine
Overview
Knox County in Maine covers 21 tracked ZIP records with an average Home Safety Score of B (83/100) across 5 scored records.
4 of 6 ZIP codes with a reported violation count in the available EPA record have recorded EPA violations. The available record reports no health-based violations for this measured scope.
← Back to Maine Home Safety Profile
Data Sources
- Water quality: EPA Safe Drinking Water Information System (SDWIS)
- PFAS screening: EPA UCMR 5
- Radon zones: EPA Map of Radon Zones
- Air quality: EPA AirData annual AQI
- Home values: U.S. Census Bureau ACS (median estimates by ZCTA)
Reporting periods vary by source. Missing data is shown as unavailable, not as zero.