GIS and Mapping in Williamson Country, IL

Public Records Search

  • Assessor and Property Tax Records, Foreclosures and Tax Lien Sales, GIS and Mapping, Land Records and Deeds, Permits and Inspections, Sustainability and Environmental Health, Voter and Elections Information
    Williamson County Supervisor of Assessments Office
    Williamson County Courthouse
    200 West Jefferson St., Marion, IL 62959
    Phone (618)997-1301 Ext.142
  • GIS and Mapping, Permits and Inspections, Sustainability and Environmental Health
    Search Williamson County floodplain maps by address.
  • GIS and Mapping, Land Records and Deeds
    View Williamson County floodplain maps, including effective flood insurance rate maps.
  • GIS and Mapping, Land Records and Deeds, Property Records
    Search Williamson County Government GIS property maps database by property identification number, owner name and site address.

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