Oglesby leans Republican by roughly 16 points: about 42% of voters vote Democratic and 58% Republican.
About 79% of adults in Oglesby typically vote, above the U.S. average of about 62%. Among adults in Oglesby, ~33% vote Democratic, ~46% Republican, and ~21% don't vote. The map below shows estimated turnout by block group.
How Oglesby compares
Among cities within 25 miles, Oglesby leans more Republican than 5 of 72 neighbors.
Oglesby runs about 27 points more Republican than Illinois as a whole. Illinois leans Democratic overall, while Oglesby is one of the few Republican-leaning pockets.
Politics vary noticeably by neighborhood within Oglesby. The southeast side is the most Republican-leaning (R+27) and the north side is the least Republican-leaning (R+15), a spread of about 12 points.
Why Oglesby 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 Oglesby, not a ranked or complete list of what matters most.
Car-dependent areas vote Republican. About 87% of residents in Oglesby drive to work alone, about 13 points above the U.S. average of 74%. Oglesby runs against the grain of Illinois, a Republican-leaning pocket in a Democratic-leaning state.
Paved land cover and Democratic lean
Places with extensive paved surfaces tend to lean Democratic; Oglesby, IL sits in the top quarter nationally on this measure. Paved ground does not change how people vote; it mostly reflects how urban and built-up a place is.
Why turnout in Oglesby looks the way it does
Turnout in Oglesby 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
- Lasalle, IL R+9
- Cedar Point, IL R+17
- Peru, IL R+10
- North Utica, IL R+25
- Tonica, IL R+40
- Standard, IL R+32
- Vermilionville, IL R+43
- Dalzell, IL R+22
- Tomahawk Bluff, IL R+28
- Utica, IL R+29
Cities with Similar Populations
- Wanamassa, NJ D+3
- Shady Side, MD R+6
- Newton, AL R+77
- Hometown, IL R+3
- Utica, OH R+53
- Chaffee, MO R+60
- Honokaa, HI D+20
- Lopezville, TX Even
- Scranton, SC R+41
- Bloomfield, IN R+53
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.