Coos County, New Hampshire
16 ZIP codes · Avg score 83/100 · Grade B
ZipCheckup grade for Coos County: B.
This ZIP has a few items worth a quick check.
Coos County: A or B, 16 ZIP codes tracked.
How Coos County Compares
How Coos County Compares
Coos County scores 9 points above the New Hampshire state average (74/100) 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: Coos County, New Hampshire
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 14.6 (asthma 11.5%, diabetes 13%)
Modeled additional annual cost estimate per homeowner: $731, largest modeled factor: Flood
64% 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: $731
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
20,904 housing units in Coos 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 Coos County
Modeled remediation costs in Coos County can be compared with the median property value; actual costs vary by property.
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 Coos County residents
Black markers = national averages. Red = above national avg. Green = below. Source: CDC PLACES, Census ACS.
Water systems mapped to Coos County ZIP codes
3 community water systems mapped to Coos County ZIP codes; EPA may list more systems serving the county.
- B
- B
Systems with the most violations in Coos County
2 water systems with violations in EPA records.
- B
All ZIP Codes in Coos County
16 ZIP codes tracked in Coos County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 03570 | Berlin | 83 | B | 1 | $114K |
| 2 | 03575 | Bretton Woods | — | — | — | |
| 3 | 03576 | Colebrook | — | — | $187K | |
| 4 | 03579 | Errol | — | — | $251K | |
| 5 | 03581 | Gorham | — | — | $156K | |
| 6 | 03582 | Groveton | — | — | $117K | |
| 7 | 03583 | Jefferson | — | — | 0 | $309K |
| 8 | 03584 | Lancaster | — | — | 0 | $197K |
| 9 | 03588 | Milan | — | — | $234K | |
| 10 | 03589 | Mount Washington | — | — | — | |
| 11 | 03590 | North Stratford | — | — | $170K | |
| 12 | 03592 | Pittsburg | — | — | $253K | |
| 13 | 03593 | Randolph | — | — | $300K | |
| 14 | 03595 | Twin Mountain | — | — | $229K | |
| 15 | 03597 | West Stewartstown | — | — | — | |
| 16 | 03598 | Whitefield | — | — | 1 (1 health) | $205K |
Recommended Buyer Guides for Coos County
Which guides appear depends on what the county data show.
- Best Lead Paint Test Kits — 64% of homes built before 1980
- 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 Coos County, New Hampshire
Overview
Coos County in New Hampshire covers 16 tracked ZIP records with an average Home Safety Score of B (83/100) across 1 scored records.
2 of 4 ZIP codes with a reported violation count in the available EPA record have recorded EPA violations. 1 health-based violation appear in the available health breakdown.
← Back to New Hampshire 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.