This month, our partners at the Missouri Spatial Data Information Service (MSDIS) present a set of “swipe maps” showing how the Missouri House and Senate district boundaries changed after the 2020 US Census.
The red outlines on each map (the left side of the swipe tool, in this case) indicate the new, post-2020 districts, and the blue outlines represent the previous boundaries. Clicking on any district will show the district number and, for the newer boundaries, the current office holder.
Missouri Census Data Center frequently works with MSDIS on mapping and data projects. MSDIS is a spatial data retrieval and archival system offering many mapping resources, primarily focused on the state of Missouri.