Shrewsbury leans heavily Democratic by roughly 32 points: about 66% of voters vote Democratic and 34% Republican.
About 75% of adults in Shrewsbury typically vote, above the U.S. average of about 62%. Among adults in Shrewsbury, ~50% vote Democratic, ~26% Republican, and ~24% don't vote. The map below shows estimated turnout by block group.
How Shrewsbury compares
Among cities within 25 miles, Shrewsbury leans more Democratic than 115 of 173 neighbors.
Shrewsbury runs about 50 points more Democratic than Missouri as a whole. Missouri leans Republican overall, while Shrewsbury is one of the few Democratic-leaning pockets.
Politics vary noticeably by neighborhood within Shrewsbury. The northeast side is the most Democratic-leaning (D+41) and the south side is the least Democratic-leaning (D+23), a spread of about 18 points.
Why Shrewsbury 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 Shrewsbury, not a ranked or complete list of what matters most.
Dense areas vote Democratic. More than 99% of residents in Shrewsbury live in densely developed areas, about 63 points above the U.S. average of 36%. High college attainment predicts Democratic voting, and Shrewsbury sits in the top quarter (about 55%, above 95% of cities). Shrewsbury runs against the grain of Missouri, a Democratic-leaning pocket in a Republican-leaning state.
Population density and Democratic lean
Places with high population density tend to lean Democratic; Shrewsbury, MO sits in the top tenth nationally on this measure.
Why turnout in Shrewsbury looks the way it does
Areas with strong routine healthcare access turn out at higher rates. Shrewsbury 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 72%, about 12 points above the U.S. average of 60%. High high-school completion lines up with higher turnout, and about 98% of adults in Shrewsbury have completed high school, above 93% of cities. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Webster Groves, MO D+38
- Marlborough, MO D+20
- Maplewood, MO D+57
- Grantwood Village, MO D+11
- Affton, MO D+11
- Wilbur Park, MO D+11
- Rock Hill, MO D+47
- Brentwood, MO D+31
- Glendale, MO D+30
- Richmond Heights, MO D+50
Cities with Similar Populations
- North Scituate, MA D+21
- Marriottsville, MD D+5
- Wisconsin Dells, WI R+21
- Trenton, MO R+51
- Cumberland Center, ME D+22
- Ozark, AR R+61
- Oak View, CA D+13
- Gleneagle, CO R+19
- Fellsmere, FL R+13
- Riverdale Park, MD D+56
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.