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Visit the "Who Are My Legislators" website to determine who represents your area.

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Discover, explore, and download the most current GIS data from the Wisconsin State Legislature.

 

Data Library

2020 CENSUS REDISTRICTING DATA

Wisconsin's (P.L. 94-171) Redistricting Data Summary Files can be downloaded from the U.S. Census FTP site.
The U.S. Census Bureau provided redistricting data as legacy format summary files for all states on August 12, 2021.

U.S. DOJ Summarized Fields
  • U.S. DOJ Redistricting Guidelines (PDF)
  • 2020 P.L. 94-171 Data Calculations based on U.S. DOJ Guidance (PDF) (XLSX)
  • 2020 Wisconsin Blocks with P.L. 94-171 Redistricting Data as U.S. DOJ Summarized Fields (XLSX) (CSV)
  • 2020 Wisconsin Municipalities with P.L. 94-171 Redistricting Data as U.S. DOJ Summarized Fields (XLSX) (CSV)
  • 2020 Wisconsin Counties with P.L. 94-171 Redistricting Data as U.S. DOJ Summarized Fields (XLSX) (CSV)

2020 TIGER Geography & P.L. 94-171 Redistricting Data as U.S. DOJ Summarized Fields

TIGER/Line Shapefiles can be downloaded from the U.S. Census website.

Johnson v. Wisconsin Elections Commission, Case No. 2021AP1450-OA - updated April 18, 2022

STATEWIDE REPORTS

2022 Statewide Reports
  • Assembly, Senate and Congressional Districts by Zip Codes (PDF) (XLS)
    • *Zip code and postal municipality data is from the U.S. Census Bureau data on August 16, 2022. Zip code data can change over time.

 

2010 Statewide Reports
  • 2011 Act 43 and 44 with Baldus et al vs. Brennan et al by Municipal Ward (PDF) (XLS)
  • Act 43 Districts by Municipal Ward (PDF) (XLS)
  • Act 43 Districts by Municipality (PDF) (XLS)
  • Act 43 Statewide Assembly, Senate, Congressional Districts by Zip Codes (PDF) (XLS)
  • 2010 Wisconsin Census Population Counts (PDF) (XLS)
  • 2010 Wisconsin Census Voting Age Population Counts (PDF) (XLS)
2000 Statewide Reports
  • Ward Population Totals by District (PDF)
  • Districts by Municipality (PDF)
  • Statewide Assembly, Senate, Congressional Districts by Zip Codes (Zip)

ELECTION DATA

Election data can be found on the LTSB Open Data Portal.
You can download each full dataset as a spreadsheet, KML file, and/or shapefile. The election data is separated into the following three decades:


LTSB GIS & Map Services
1 South Pinckney Street, Suite 615
Madison, WI 53703-3220
(608) 283-1830