Catlin leans heavily Republican by roughly 48 points: about 26% of voters vote Democratic and 74% Republican.
About 93% of adults in Catlin typically vote, above the U.S. average of about 62%. Among adults in Catlin, ~24% vote Democratic, ~69% Republican, and ~7% don't vote. The map below shows estimated turnout by block group.
How Catlin compares
Among cities within 25 miles, Catlin leans more Republican than 9 of 70 neighbors.
Catlin runs about 59 points more Republican than Illinois as a whole. Illinois leans Democratic overall, while Catlin is one of the few Republican-leaning pockets.
Politics vary noticeably by neighborhood within Catlin. The southwest side is the most Republican-leaning (R+59) and the east side is the least Republican-leaning (R+44), a spread of about 15 points.
Why Catlin 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 Catlin, not a ranked or complete list of what matters most.
Catlin votes Republican even though it is densely developed (about 57%, well above the Illinois average of 33%). State and regional patterns outweigh the Democratic lean that density usually predicts here. Catlin runs against the grain of Illinois, a Republican-leaning pocket in a Democratic-leaning state.
Preventive-care access and voter turnout
Places with strong routine preventive-care access tend to turn out at a higher rate; Catlin, IL sits in the top 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 Catlin looks the way it does
Areas with strong routine healthcare access turn out at higher rates. Catlin 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 69%, about 9 points above the U.S. average of 60%. High high-school completion lines up with higher turnout, and about 97% of adults in Catlin have completed high school, above 89% of cities. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Belgium, IL R+43
- Tilton, IL R+40
- Westville, IL R+42
- Oakwood, IL R+49
- Midway, IL R+54
- Fairmount, IL R+56
- Himrod, IL R+50
- Danville, IL Even
- Jamaica, IL R+62
- Brothers, IL R+55
Cities with Similar Populations
- Broad Run, VA R+11
- North Zulch, TX R+70
- Irving, NY D+6
- Bartonville, TX R+46
- Wolverine, MI R+40
- Woolwich, ME D+11
- Smethport, PA R+53
- Mesilla, NM D+8
- Elmwood, IL R+31
- Seabrook, SC D+20
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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.