Lead Paint Risk in Williamson County, Illinois

49.1%Pre-1978 Housing
15,696Pre-1978 Units
31,957Total Housing Units
18Census Tracts

How to Interpret This

This is an area-level screening signal based on Census housing-age data. It does not confirm lead paint in any specific home. Homes built before 1978 may contain lead-based paint, and certified inspection or testing is the only way to confirm a property-level hazard.

Reporter / Resident Story Kit

  • 15,696 housing units in Williamson County were built before 1978.
  • The county's pre-1978 housing share is 49.1%, compared with the state rate of 64.1%.
  • Local questions: Which neighborhoods have the oldest housing stock? Are lead-safe renovation resources available? Do renters and families with young children know how to request testing?

Highest-Risk Census Tracts

Individual census tracts ranked by pre-1978 housing percentage. Showing the top 18 of 18 tracts; download the full county tract CSV.

TractPre-1978TotalRisk Rate1970s1960s1950s1940s≤1939
Census Tract 2041,6701,89888.0%346162287291584
Census Tract 2121,5322,12972.0%420388278164282
Census Tract 2071,5622,34966.5%25828512636857
Census Tract 2051,0411,69461.5%19393167109479
Census Tract 210.018101,40157.8%3182302282158
Census Tract 2118871,57656.3%17952173178305
Census Tract 202.011,4872,85952.0%447280120237403
Census Tract 208.029101,90547.8%2616122089279
Census Tract 2067151,58345.2%2181029390212
Census Tract 2017391,65844.6%1481726984266
Census Tract 2139932,23344.5%36418220369175
Census Tract 208.013731,03736.0%451051483126
Census Tract 2147732,15935.8%402226426637
Census Tract 210.0317551334.1%534071065
Census Tract 2037782,45831.7%25521664104139
Census Tract 2097192,41129.8%2721451455152
Census Tract 210.0224082029.3%21090021
Census Tract 202.022921,27422.9%185570428