Where the map comes from
District lines
U.S. Census Bureau 2024 cartographic boundary files (1:500,000): cb_2024_us_cd119_500k (Missouri features only) for the 8 U.S. House districts, cb_2024_29_sldu_500k for the 34 state Senate districts, cb_2024_29_sldl_500k for the 163 state House districts, cb_2024_us_county_500k for counties and cb_2024_29_place_500k for city and town limits. These show the Missouri's state Senate and House maps drawn after the 2020 census (first used in 2022). District files are converted without simplification; county outlines and city limits are simplified for display. Near a boundary line they can be off by a block or more.
Files
cb_2024_29_sldu_500k.zip: www2.census.gov, retrieved 2026-10-13cb_2024_29_sldl_500k.zip: www2.census.gov, retrieved 2026-10-13cb_2024_29_place_500k.zip: www2.census.gov, retrieved 2026-10-13mo.csv: data.openstates.org, retrieved 2026-10-132026GeneralElectionCertifiedCandidates.pdf: sos.mo.gov (Missouri Secretary of State), retrieved 2026-10-132454H.05T.pdf: documents.house.mo.gov, retrieved 2026-10-132026-106.pdf: sos.mo.gov (Missouri Secretary of State), retrieved 2026-10-13SJR95.pdf: senate.mo.gov, retrieved 2026-10-13SJR87.pdf: senate.mo.gov, retrieved 2026-10-132026-R004.pdf: sos.mo.gov (Missouri Secretary of State), retrieved 2026-10-13
Census files: www2.census.gov/geo/tiger/GENZ2024/shp/.
Software
Leaflet 1.9.4 (BSD-2-Clause), served from this site. Optional street map © OpenStreetMap contributors; optional address search by OpenStreetMap Nominatim.