Egan leans heavily Republican by roughly 42 points: about 29% of voters vote Democratic and 71% Republican.
About 81% of adults in Egan typically vote, above the U.S. average of about 62%. Among adults in Egan, ~24% vote Democratic, ~57% Republican, and ~19% don't vote. The map below shows estimated turnout by block group.
How Egan compares
Among cities within 25 miles, Egan leans more Republican than 45 of 67 neighbors.
Egan runs about 52 points more Republican than Illinois as a whole. Illinois leans Democratic overall, while Egan is one of the few Republican-leaning pockets.
Politics vary noticeably by neighborhood within Egan. The west side is the most Republican-leaning (R+49) and the east side is the least Republican-leaning (R+36), a spread of about 13 points.
Why Egan 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 Egan, not a ranked or complete list of what matters most.
Car-dependent areas vote Republican. About 89% of residents in Egan drive to work alone, about 15 points above the U.S. average of 74%. Egan runs against the grain of Illinois, a Republican-leaning pocket in a Democratic-leaning state.
Walkability and Republican lean
Places with a low walkability score tend to lean Republican; Egan, IL sits in the bottom quarter nationally on this measure. A walkable street grid does not change how people vote; it mostly reflects how urban a place is.
Why turnout in Egan looks the way it does
Areas with high high-school completion turn out at higher rates. About 97% of adults in Egan have completed high school, about 5 points above the Illinois average of 92%. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- German Valley, IL R+45
- Leaf River, IL R+39
- Seward, IL R+46
- Myrtle, IL R+35
- Ridott, IL R+44
- Byron, IL R+26
- Baileyville, IL R+46
- Pecatonica, IL R+34
Cities with Similar Populations
- Galt, IA R+51
- Garards Fort, PA R+52
- Rexburg, VA R+7
- Shiloh, TN R+78
- Pungoteague, VA R+17
- Drewsey, OR R+61
- Quiggleville, PA R+61
- Lime Creek, MN R+55
- Slater, SC R+69
- Gidsville, VA R+51
All Local Stats
Home Services
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.