Jefferson County, Washington
7 ZIP codes · Avg score 100/100 · Grade A
ZipCheckup grade for Jefferson County: A.
Checked records flag no major concern; missing data is unknown.
Jefferson County: A or B, 7 ZIP codes tracked.
How Jefferson County Compares
How Jefferson County Compares
Jefferson County scores 14 points above the Washington state average (86/100) and 27 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: Jefferson County, Washington
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 13.8 (asthma 10.5%, diabetes 13.1%)
Modeled additional annual cost estimate per homeowner: $1,144, largest modeled factor: Flood
37% 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: $1,144
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
18,491 housing units in Jefferson 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 Jefferson County
Modeled remediation costs in Jefferson 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 Jefferson County residents
Black markers = national averages. Red = above national avg. Green = below. Source: CDC PLACES, Census ACS.
Water systems mapped to Jefferson County ZIP codes
6 community water systems mapped to Jefferson County ZIP codes; EPA may list more systems serving the county.
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Systems with the most violations in Jefferson County
3 water systems with violations in EPA records.
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- A
All ZIP Codes in Jefferson County
7 ZIP codes tracked in Jefferson County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 98339 | Port Hadlock | 100 | A | 1 | $386K |
| 2 | 98358 | Nordland | 100 | A | 1 | $561K |
| 3 | 98325 | Chimacum | 99 | A | 2 | $468K |
| 4 | 98368 | Port Townsend | 99 | A | 3 | $512K |
| 5 | 98320 | Brinnon | — | — | $266K | |
| 6 | 98365 | Port Ludlow | — | — | 1 | $604K |
| 7 | 98376 | Quilcene | — | — | 0 | $376K |
Recommended Buyer Guides for Jefferson County
These buyer guides are matched by rule rather than by hand - a PFAS record adds a PFAS filter guide, a lead action-level exceedance adds lead filter guides, a high share of pre-1978 homes adds lead paint test kits, EPA Radon Zone 1 add radon kits, and a top flood or wildfire risk adds related equipment.
- 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 Jefferson County, Washington
Overview
Jefferson County in Washington covers 7 tracked ZIP records with an average Home Safety Score of A (100/100) across 4 scored records.
5 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 Washington 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.