Penobscot County, Maine
44 ZIP codes · Avg score 66/100 · Grade C · Updated
ZipCheckup grade for Penobscot County: C.
A mixed picture - some signals here are worth your attention.
Penobscot County: 44 ZIP codes, mid-range safety grade.
How Penobscot County Compares
How Penobscot County Compares
Penobscot County scores 1 points above the Maine state average (65/100) and 7 points below the national average (73/100).
Data: ZipCheckup Home Safety Score model 4.0.0; EPA SDWIS, UCMR 5, EPA radon zones, EPA AirData Last verified:
ZIP Code Risk Map
Water Quality Map: Penobscot County, Maine
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 14.2 (asthma 13.3%, diabetes 11.5%)
Estimated additional annual cost per homeowner: $1,258, driven primarily by flood
59.6% of homes built before 1978 (lead paint era)
Violation History (2021–2024)
→ Stable trendEPA violation counts by year across Penobscot County water systems. Health-based shown in red, total in blue.
Peak year: 2021 with 1 violation. Past 5 years: 2 total (2 health-based).
Source: EPA SDWIS historical violations. Data may lag 6–12 months for the most recent year.
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 DWINS infrastructure needs, EPA SDWIS violations, and EPA lead indicators.
Compound Risk Breakdown
Estimated additional annual cost per homeowner: $1,258
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
67,172 housing units in Penobscot County
Source: U.S. Census Bureau ACS B25034 (Year Structure Built).
Water Safety Affordability
How much it costs to fix water issues relative to home values in Penobscot County
Remediation costs are relatively manageable for most homeowners in Penobscot County, representing a small fraction of property value.
Remediation includes water filtration, lead abatement, radon mitigation, and flood protection where applicable. Source: Census ACS, EPA SDWIS.
Health Outcomes vs National Average
CDC PLACES data for Penobscot County residents
Black markers = national averages. Red = above national avg. Green = below. Source: CDC PLACES, Census ACS.
Water systems serving Penobscot County
8 community water systems serving Penobscot County.
- C
- C
- C
- C
- C
- C
Show all 8 water systems
12 total water systems serve Penobscot County.
Systems with the most violations in Penobscot County
5 water systems with recorded EPA violations.
- C
- C
- C
- C
All ZIP Codes in Penobscot County
44 ZIP codes tracked in Penobscot County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 04411 | Bradley | 67 | C | 0 | $191K |
| 2 | 04461 | Milford | 67 | C | 0 | $183K |
| 3 | 04462 | Millinocket | 67 | C | 0 | $90K |
| 4 | 04468 | Old Town | 67 | C | 0 | $182K |
| 5 | 04444 | Hampden | 66 | C | 1 | $271K |
| 6 | 04473 | Orono | 66 | C | 1 | $218K |
| 7 | 04428 | Eddington | 65 | C | 7 (2 health) | $214K |
| 8 | 04401 | Bangor | 63 | C | 5 (2 health) | $230K |
| 9 | 04402 | Bangor | — | — | — | |
| 10 | 04410 | Bradford | — | — | $179K | |
| 11 | 04417 | Burlington | — | — | $93K | |
| 12 | 04418 | Greenbush | — | — | $120K | |
| 13 | 04419 | Carmel | — | — | $235K | |
| 14 | 04422 | Charleston | — | — | $223K | |
| 15 | 04427 | Corinth | — | — | $124K | |
| 16 | 04430 | East Millinocket | — | — | 0 | $74K |
| 17 | 04434 | Etna | — | — | $145K | |
| 18 | 04435 | Exeter | — | — | $155K | |
| 19 | 04448 | Howland | — | — | 4 | $116K |
| 20 | 04449 | Hudson | — | — | $146K | |
| 21 | 04450 | Kenduskeag | — | — | 2 (2 health) | $155K |
| 22 | 04451 | Kingman | — | — | $62K | |
| 23 | 04453 | Lagrange | — | — | 4 | $129K |
| 24 | 04455 | Lee | — | — | $152K | |
| 25 | 04456 | Levant | — | — | $245K | |
| 26 | 04457 | Lincoln | — | — | 0 | $126K |
| 27 | 04459 | Mattawamkeag | — | — | $84K | |
| 28 | 04460 | Medway | — | — | $85K | |
| 29 | 04469 | Orono | — | — | 1 | — |
| 30 | 04474 | Orrington | — | — | $239K | |
| 31 | 04475 | Passadumkeag | — | — | $93K | |
| 32 | 04487 | Springfield | — | — | $87K | |
| 33 | 04488 | Stetson | — | — | $186K | |
| 34 | 04489 | Stillwater | — | — | $229K | |
| 35 | 04493 | West Enfield | — | — | $161K | |
| 36 | 04495 | Winn | — | — | $96K | |
| 37 | 04765 | Patten | — | — | $120K | |
| 38 | 04777 | Stacyville | — | — | $90K | |
| 39 | 04928 | Corinna | — | — | $165K | |
| 40 | 04932 | Dixmont | — | — | $178K | |
| 41 | 04933 | East Newport | — | — | — | |
| 42 | 04939 | Garland | — | — | $146K | |
| 43 | 04953 | Newport | — | — | 0 | $213K |
| 44 | 04969 | Plymouth | — | — | $188K |
Recommended Buyer Guides for Penobscot County
Four sources - EPA, NSF, FEMA, CDC - drive the match.
- Best Lead Paint Test Kits — 59.6% of homes built before 1978
- Best Under-Sink Reverse Osmosis Systems — Multi-contaminant removal at the kitchen tap
- Best Radon Test Kits — EPA Radon Zone 1 (highest risk) dominant in county
- Best Sump Pumps — Flood is the top compound risk factor
- Best Mold Test Kits — Flood-driven moisture and mold risk
Deep Dive Reports
Detailed analysis for Penobscot County, Maine
Overview
Penobscot County in Maine covers 44 tracked ZIP records with an average Home Safety Score of C (66/100) across 8 scored records.
8 of 15 ZIP codes with a reported violation count in the available EPA record have recorded EPA violations. 4 health-based violations appear in the available health breakdown.
← 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.