Where the map comes from
District lines
U.S. Census Bureau 2024 cartographic boundary files (1:500,000): the Utah Geospatial Resource Center's "Utah US Congress Districts 2026 to 2032" layer (court-ordered Map 1A, from opendata.gis.utah.gov), simplified slightly for display, for the 4 U.S. House districts, cb_2024_49_sldu_500k for the 29 state Senate districts, cb_2024_49_sldl_500k for the 75 state House districts, cb_2024_us_county_500k for counties and cb_2024_49_place_500k for city and town limits. These show the {'url': 'https://gis.utah.gov/products/sgid/political/', 'label': 'Utah Geospatial Resource Center: political boundaries (state Senate and House districts)', '_check': 'Direct Utah Senate/House district layer pages not opened; legislative maps are the 2021 maps, unchanged by the congressional ruling (confirm).'}. 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_49_sldu_500k.zip: www2.census.gov, retrieved 2026-10-13cb_2024_49_sldl_500k.zip: www2.census.gov, retrieved 2026-10-13cb_2024_49_place_500k.zip: www2.census.gov, retrieved 2026-10-13ut.csv: data.openstates.org, retrieved 2026-10-132026-General-Election-Certification-Amended-09-21.pdf: vote.utah.gov, retrieved 2026-10-14FAILED (http 202, 183 bytes): opendata.gis.utah.gov, retrieved 2026-10-142026-Voter-Information-Pamphlet.pdf: vote.utah.gov, retrieved 2026-10-14
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.