Draw Your Map
Think you can draw fairer districts? Select a district color, paint census tracts, and watch population metrics update in real time.
Districts
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1. Pick a District
Choose from 8 color-coded district slots in the sidebar. Use the eraser to unassign tracts. The active district is highlighted.
2. Paint Tracts
Click a tract to assign it, or click-and-drag to paint multiple tracts at once. Population deviation bars update instantly. Aim for less than 1% deviation.
3. Undo & Iterate
Use Ctrl+Z / Ctrl+Y to undo and redo. The deviation bar turns green when a district is within 1% of ideal population, yellow under 5%, red above 5%.
About the Data
The editor uses 1,654 census tracts from the 2020 U.S. Census as the smallest paintable unit. Missouri's total population is 6,154,913, giving an ideal district size of about 769,364 people. The dashed blue overlay shows the current enacted congressional district boundaries for reference.
Reading the bars: Each district's bar shows your population on a scale up to 125% of ideal. The dark tick marks the ideal size, and the blue tick marks the population of the same-numbered district in the 2022 map now in use. Tract populations are 2020 Census (PL 94-171) counts of total residents, not citizens.