Day County, South Dakota
7 ZIP codes · Home Safety Score unavailable · 0 of 7 tracked ZIP records scored
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: Day County, South Dakota
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 15 (asthma 10.4%, diabetes 14.7%)
Modeled additional annual cost estimate per homeowner: $1,147, largest modeled factor: Flood
73% 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: $1,147
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
3,386 housing units in Day County
Source: U.S. Census Bureau ACS B25034 (Year Structure Built).
Health Outcomes vs National Average
CDC PLACES data for Day County residents
Black markers = national averages. Red = above national avg. Green = below. Source: CDC PLACES, Census ACS.
Water systems mapped to Day County ZIP codes
4 community water systems mapped to Day County ZIP codes; EPA may list more systems serving the county.
All ZIP Codes in Day County
7 ZIP codes tracked in Day County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 57219 | Bristol | — | — | 0 | $83K |
| 2 | 57239 | Grenville | — | — | 0 | $291K |
| 3 | 57261 | Roslyn | — | — | 0 | $114K |
| 4 | 57273 | Waubay | — | — | 0 | $156K |
| 5 | 57274 | Webster | — | — | 0 | $162K |
| 6 | 57422 | Andover | — | — | 0 | $95K |
| 7 | 57468 | Pierpont | — | — | 0 | $104K |
Recommended Buyer Guides for Day County
Read the note next to each link: it gives the reason, such as a radon zone designation or housing age, that led to the recommendation.
- Best Lead Paint Test Kits — 73% of homes built before 1980
- 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
Overview
Day County in South Dakota covers 7 tracked ZIP records. No Home Safety Score is published because the required model evidence is incomplete for every tracked record; missing evidence is not treated as zero.
The available EPA record reports 0 violations for 7 ZIP codes with a reported violation count.
← Back to South Dakota 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.