Colesville is a Democratic stronghold. About 77% of voters here vote Democratic and 23% Republican.
About 84% of adults in Colesville typically vote, above the U.S. average of about 62%. Among adults in Colesville, ~65% vote Democratic, ~19% Republican, and ~16% don't vote. The map below shows estimated turnout by block group.
How Colesville compares
Among cities within 25 miles, Colesville leans more Democratic than 122 of 211 neighbors.
Colesville runs about 26 points more Democratic than Maryland as a whole.
Why Colesville 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 Colesville, not a ranked or complete list of what matters most.
Dense areas vote Democratic. About 85% of residents in Colesville live in densely developed areas, about 48 points above the U.S. average of 36%. High college attainment predicts Democratic voting, and Colesville sits in the top quarter (about 56%, above 96% of cities). A high never-married share predicts Democratic voting, and about 31% of adults in Colesville have never been married, above 77% of cities.
Population density and Democratic lean
Places with high population density tend to lean Democratic; Colesville, MD sits in the top tenth nationally on this measure.
Why turnout in Colesville looks the way it does
Areas with strong routine healthcare access turn out at higher rates. Colesville 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 71%, about 11 points above the U.S. average of 60%. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Cloverly, MD D+48
- White Oak, MD D+63
- Fairland, MD D+66
- Calverton, MD D+62
- Glenmont, MD D+51
- Kemp Mill, MD D+49
- Four Corners, MD D+63
- Spencerville, MD D+25
- Wheaton, MD D+48
- Silver Spring, MD D+66
Cities with Similar Populations
- Paris, KY R+30
- Los Alamos, NM D+33
- Fords, NJ D+4
- Hartsdale, NY D+24
- Leeds, AL R+34
- St. Peter, MN Even
- Rosaryville, MD D+77
- Hyde Park, NY Even
- Highland, IL R+28
- St. Johns, MI R+21
All Local Stats
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Sources and methodology
Precinct-level voting records used to fit the model come from Maryland State Board of 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.