Lancaster is a Republican stronghold. About 25% of voters here vote Democratic and 75% Republican.
About 70% of adults in Lancaster typically vote, above the U.S. average of about 62%. Among adults in Lancaster, ~17% vote Democratic, ~53% Republican, and ~30% don't vote. The map below shows estimated turnout by block group.
How Lancaster compares
Among cities within 25 miles, Lancaster leans more Republican than 12 of 64 neighbors.
Lancaster runs about 61 points more Republican than Illinois as a whole. Illinois leans Democratic overall, while Lancaster is one of the few Republican-leaning pockets.
Politics vary noticeably by neighborhood within Lancaster. The west side is the most Republican-leaning (R+52) and the north side is the least Republican-leaning (R+38), a spread of about 13 points.
Why Lancaster 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 Lancaster, not a ranked or complete list of what matters most.
Lancaster votes against the grain of Illinois. Illinois leans Democratic overall, while Lancaster runs about 61 points more Republican. A high family-household share predicts Republican voting, and about 79% of households in Lancaster are family households, above 87% of cities.
Never-married share and voter turnout
Places with a low never-married share tend to turn out at a higher rate; Lancaster, IL sits in the bottom tenth nationally on this measure.
Why turnout in Lancaster looks the way it does
Turnout in Lancaster 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
- Mount Carmel, IL R+45
- Maud, IL R+67
- Odgen, IL R+66
- Keensburg, IL R+70
- East Mount Carmel, IN R+58
- Bellmont, IL R+67
- Patton, IL R+65
- Gards Point, IL R+74
- Friendsville, IL R+71
- Johnson, IN R+61
Cities with Similar Populations
- Freedom, WY R+63
- Krypton, KY R+71
- Ninemile, MT R+29
- Hall Summit, LA R+81
- Pershing, IN R+57
- Woolstock, IA R+47
- White Point Beach, MD R+24
- Folsom, WV R+68
- Puukohola Heiau National Historic Site, HI D+20
- Crook, CO R+68
All Local Stats
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Sources and methodology
Precinct-level voting records used to fit the model come from Illinois 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.