Boulder City is a Republican stronghold. About 14% of voters here vote Democratic and 86% Republican.
About 66% of adults in Boulder City typically vote, near the U.S. average of about 62%. Among adults in Boulder City, ~9% vote Democratic, ~57% Republican, and ~34% don't vote. The map below shows estimated turnout by block group.
How Boulder City compares
Among cities within 25 miles, Boulder City leans more Republican than 64 of 71 neighbors.
Boulder City runs about 54 points more Republican than Missouri as a whole.
Why Boulder City 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 Boulder City, not a ranked or complete list of what matters most.
Areas with many family households vote Republican. About 78% of households in Boulder City are family households, about 11 points above the U.S. average of 67%.
Preventive-care access and voter turnout
Places with limited routine preventive-care access tend to turn out at a lower rate; Boulder City, MO sits in the bottom quarter nationally on this measure. Dental visits do not drive turnout; the rate reflects income, insurance, and healthcare access, which line up with who votes.
Why turnout in Boulder City looks the way it does
Turnout in Boulder City sits close to the national pattern. Routine healthcare access, homeownership, education, and food security all land near their national averages here. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Christopher, MO R+69
- McNatt, MO R+73
- Stella, MO R+73
- Newtonia, MO R+72
- Longview, MO R+72
- Monark Springs, MO R+69
- Stark City, MO R+72
- Simcoe, MO R+70
- Rocky Comfort, MO R+71
- Granby, MO R+63
Cities with Similar Populations
- Staley Crossroads, VA R+60
- Linnton, OR D+28
- Patterson, TN R+46
- Motley, KY R+51
- Marco, IN R+62
- Maness, VA R+67
- Mount Ephraim, OH R+62
- South Bend, TX R+82
- Old Escobares, TX Even
- Blackman, FL R+80
All Local Stats
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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.