Black Jack is a Democratic stronghold. About 91% of voters here vote Democratic and 9% Republican.
About 78% of adults in Black Jack typically vote, above the U.S. average of about 62%. Among adults in Black Jack, ~71% vote Democratic, ~7% Republican, and ~22% don't vote. The map below shows estimated turnout by block group.
How Black Jack compares
Among cities within 25 miles, Black Jack leans more Democratic than 161 of 177 neighbors.
Black Jack runs about 100 points more Democratic than Missouri as a whole. Missouri leans Republican overall, while Black Jack is one of the few Democratic-leaning pockets.
Why Black Jack leans the way it does
This analysis examined 14,881 data points per city to find what predicts political lean and turnout. The items below are a few correlations that stood out for Black Jack, not a ranked or complete list of what matters most.
Dense areas vote Democratic. About 87% of residents in Black Jack live in densely developed areas, about 50 points above the U.S. average of 36%. High college attainment predicts Democratic voting, and Black Jack sits in the top quarter (about 34%, above 81% of cities). Black Jack runs against the grain of Missouri, a Democratic-leaning pocket in a Republican-leaning state.
Walkability and Democratic lean
Places with a highly walkable street grid tend to lean Democratic; Black Jack, MO sits in the top tenth nationally on this measure. A walkable street grid does not change how people vote; it mostly reflects how urban a place is.
Why turnout in Black Jack looks the way it does
Areas with strong routine healthcare access turn out at higher rates. Black Jack is in the top quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. The dental-visit rate here is about 58%, below 62% of cities. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Dellwood, MO D+77
- Florissant, MO D+51
- Spanish Lake, MO D+74
- Old Jamestown, MO D+64
- Calverton Park, MO D+53
- Moline Acres, MO D+85
- Ferguson, MO D+69
- Bellefontaine Neighbors, MO D+79
- Riverview, MO D+69
- Jennings, MO D+85
Cities with Similar Populations
- Orange Lake, NY D+16
- Jefferson, OH R+44
- Mineral, VA R+39
- Waterford, PA R+35
- Carlinville, IL R+33
- Dingmans Ferry, PA R+29
- Solvay, NY D+8
- Hensley, AR R+48
- Berwick, ME R+10
- Richland, MI R+13
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Sources and methodology
Precinct-level voting records used to fit the model come from Missouri Secretary of State, Elections, distributed by the Voting and Election Science Team. Demographic inputs come from the U.S. Census Bureau (ACS 5-year estimates and the 2020 Decennial Census). Health and environmental inputs come from the CDC (PLACES and the Environmental Justice Index). Land cover comes from the USGS and EPA. Election-day and lead-up weather come from PRISM 4km daily grids and the NOAA Global Historical Climatology Network. Mail-voting and election-administration patterns come from the MIT Election Lab's Survey of the Performance of American Elections. Block-group crime detail comes from CrimeGrade. Internet data and modeling support provided by ISPreports.org.
Modeling and analysis by the BestNeighborhood data science team. Full methodology and findings: political spectrum map.
Methodology reviewed by the BestNeighborhood data team. Last updated May 2026.