Washington County, IL: GIS map
Interactive GIS and parcel map for Washington County. Search a property to see its parcel lines and the other map layers.
Washington County GIS map Open PublicGIS map
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What you can look up here
- County GIS mapThe interactive map the county publishes. Parcels, aerial photos, roads, and lakes in one place.
About this resource
- Provided by
- Washington County (official)
- Covers
- Washington County, IL
- Link status
- Opened normally at the last check
- Link checked
- Oct 15, 2026
- Web address
- https://www.arcgis.com/apps/mapviewer/index.html?webmap=9ab95a8c6da142f5ae504beb8327c7f8
Who to contact
- Washington County GIS and mappingWashington County Supervisor of Assessments keeps the maps and GIS for Washington County.Sharon Harre Mewes, Supervisor of Assessments
- Phone
- (618) 327-4800 ext. 166
- sharon.mewes@washingtonco.illinois.gov
- Website
- Visit website
More for Washington County, IL
- Washington County property tax inquiryProperty owner · Property records · Parcel number
- Illinois GIS data downloadsAerial imagery · GIS data downloads · Elevation · Addresses and 911 numbers
- Washington County zoning and land useZoning
- FEMA Flood Map Service CenterFlood zones
- Illinois drainage districts and drainage commissionersWetlands
- USDA Web Soil SurveySoils
- Illinois Environmental Protection AgencyLakes and water
- MRLC NLCD Land Cover ViewerLand cover
- Washington County RecorderProperty records · Deeds and land records · Plats
- Washington County building and land use permitsZoning · Building permits
- Washington County roads and public worksRoads
- Washington County USDA FSA and NRCS officeSoils