Districting for ArcGIS is a free ArcMap/ArcCatalog add-on. Use it to create a districting plan through defined groupings of geographic data such as census tracts, ZIP Codes, and precincts. You can redraw political boundaries, set-up territories for sales efforts, define boundaries for voting, school, fire or police services, and analyze statistics.
Download Districting for ArcGIS
Always use the latest version of Districting for ArcGIS.
Run the Districting for ArcGIS.exe file you downloaded to install the extension.
Open ArcMap, and turn on your new Districting for ArcGIS extension by selecting Tools > Extensions, then clicking the Districting box, and then clicking Close.
Selecting either View > Toolbars, or right-click in the toolbars region near the top of the ArcMap window.
Once plan workspaces and plans are created, you can start ArcCatalog and expand your plan workspaces branch in the Catalog tree to view them.