Union County, South Dakota
4 ZIP codes · Home Safety Score unavailable · 0 of 4 tracked ZIP records scored
Data: ZipCheckup Home Safety Score model 4.0.0; EPA SDWIS, UCMR 5, EPA radon zones, EPA AirData
Key Risk Factors
Health risk index: 12 (asthma 9.6%, diabetes 10.6%)
Modeled additional annual cost estimate per homeowner: $1,498, largest modeled factor: Flood
38% 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: $1,498
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
6,044 housing units in Union County
Source: U.S. Census Bureau ACS B25034 (Year Structure Built).
Health Outcomes vs National Average
CDC PLACES data for Union County residents
Black markers = national averages. Red = above national avg. Green = below. Source: CDC PLACES, Census ACS.
Water systems mapped to Union County ZIP codes
6 community water systems mapped to Union County ZIP codes; EPA may list more systems serving the county.
Systems with the most violations in Union County
1 water system with violations in EPA records.
All ZIP Codes in Union County
4 ZIP codes tracked in Union County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 57001 | Alcester | — | — | 2 | $159K |
| 2 | 57025 | Elk Point | — | — | 0 | $226K |
| 3 | 57038 | Jefferson | — | — | 0 | $281K |
| 4 | 57049 | North Sioux City | — | — | 0 | $406K |
Recommended Buyer Guides for Union County
Each guide below is listed with the reason it appears.
- 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
Union County in South Dakota covers 4 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.
1 of 4 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 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.