GIS maps and open data
Interactive maps for parcels, zoning, floodplains, infrastructure, and open data through the Janesville ArcGIS Open Data Hub.
Overview
The City of Janesville maintains interactive GIS maps and an Open Data Hub powered by ArcGIS/ESRI. Access parcel maps, zoning maps, floodplain boundaries, utility infrastructure, park locations, and more. The Open Data Hub provides downloadable datasets for community research and analysis.
Before you begin
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Visit the Janesville Open Data Hub at data-janesvillewi.opendata.arcgis.com.
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Use the interactive map viewer to explore parcels, zoning, and infrastructure layers.
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Search for specific addresses or parcels using the search bar.
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Download datasets in GIS, CSV, or other formats for your own use.
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For questions about GIS data, contact the IT/GIS division at (608) 755-3000.
Frequently asked questions
Is the GIS data free to use?
Yes. All datasets on the Open Data Hub are available for public use at no charge. Data is provided as-is and updated on varying schedules depending on the dataset.
Can I download map layers?
Yes. Most map layers are available for download in multiple formats including Shapefile, GeoJSON, CSV, and KML.
Last reviewed: March 2026
Service information
- Who this helps
- Residents, developers, researchers, real estate professionals
- Contact and hours
- Online data available 24/7