Gibson County, Indiana
9 ZIP codes · Avg score 72/100 · Grade B · Updated 2026-06-03
Throughout Gibson County, the 9 monitored ZIP codes show low violation rates and healthy safety scores — a pattern that puts the county well above the state baseline for drinking water quality.
How Gibson County Compares
How Gibson County Compares
Gibson County scores 12 points above the Indiana state average (60/100) and 4 points above the national average (68/100).
Data: EPA SDWIS Last verified: 2026-06-03
ZIP Code Risk Map
Water Quality Map: Gibson County, Indiana
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 11.2%, diabetes 13%)
Estimated additional annual cost per homeowner: $728, driven primarily by flood
Infrastructure: 0.393% avg pipe failure probability, 44% of ZIPs at high risk
61.6% of homes built before 1978 (lead paint era)
Violation History (2024–2025)
→ Stable trendEPA violation counts by year across Gibson County water systems. Health-based shown in red, total in blue.
Peak year: 2024 with 12 violations. Past 5 years: 18 total (18 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
Sources: Census ACS (housing age), EPA SDWIS (infrastructure risk model), state bridge inspection data.
Compound Risk Breakdown
Estimated additional annual cost per homeowner: $728
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
14,817 housing units in Gibson 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 Gibson County
Remediation costs are relatively manageable for most homeowners in Gibson 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 Gibson County residents
Black markers = national averages. Red = above national avg. Green = below. Source: CDC PLACES, Census ACS.
Water Systems with Most Violations
Top 5 systems in Gibson County ranked by EPA violation count.
| # | Water System | Population | Violations |
|---|---|---|---|
| 1 | Oakland City Water Department | 2,938 | 14 |
| 2 | Fort Branch Water Department | 4,020 | 13 |
| 3 | Gibson Water Authority | 4,775 | 11 |
| 4 | Haubstadt Water Department | 1,600 | 11 |
| 5 | Princeton Water Department | 10,875 | 9 |
13 total water systems serve Gibson County.
All ZIP Codes in Gibson County
9 ZIP codes tracked in Gibson County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 47649 | Francisco | 83 | B | 1 | $163K |
| 2 | 47648 | Fort Branch | 82 | B | 4 (1 health) | $193K |
| 3 | 47640 | Hazleton | 77 | B | 3 | $110K |
| 4 | 47660 | Oakland City | 76 | B | 9 (1 health) | $133K |
| 5 | 47665 | Owensville | 75 | B | 0 | $200K |
| 6 | 47639 | Haubstadt | 69 | C | 7 (4 health) | $257K |
| 7 | 47666 | Patoka | 69 | C | 5 (1 health) | $124K |
| 8 | 47670 | Princeton | 64 | C | 8 | $140K |
| 9 | 47683 | Somerville | 53 | D | 0 | $113K |
Recommended Buyer Guides for Gibson County
Below: editorial picks, no sponsored placements.
- Best Lead Paint Test Kits — 61.6% of homes built before 1978
- Best Under-Sink Reverse Osmosis Systems — Multi-contaminant removal at the kitchen tap
- 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 Gibson County, Indiana
Overview
Gibson County in Indiana covers 9 ZIP codes with an average Home Safety Score of B (72/100).
7 of 9 ZIP codes have recorded EPA violations. 7 health-based violations have been documented.
← Back to Indiana water quality report
Data Sources
- Water quality: EPA Safe Drinking Water Information System (SDWIS)
- Home values: U.S. Census Bureau ACS (median estimates by ZCTA)
Updated daily.