66118 leans slightly Democratic by roughly 10 points: about 55% of voters vote Democratic and 45% Republican.
About 73% of adults in 66118 typically vote, above the U.S. average of about 62%. Among adults in 66118, ~40% vote Democratic, ~33% Republican, and ~27% don't vote. The map below shows estimated turnout by block group.
How 66118 compares
Among zip codes within 15 miles, 66118 leans more Democratic than 32 of 83 neighbors.
66118 runs about 26 points more Democratic than Kansas as a whole. Kansas leans Republican overall, while 66118 is one of the few Democratic-leaning pockets.
Why 66118 leans the way it does
This analysis examined 14,881 data points per zip code to find what predicts political lean and turnout. The items below are a few correlations that stood out for 66118, not a ranked or complete list of what matters most.
Dense areas vote Democratic. About 88% of residents in 66118 live in densely developed areas, about 51 points above the U.S. average of 36%. 66118 runs against the grain of Kansas, a Democratic-leaning pocket in a Republican-leaning state.
Paved land cover and Democratic lean
Places with extensive paved surfaces tend to lean Democratic; 66118, KS sits in the top tenth 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 66118 looks the way it does
Areas with limited routine healthcare access turn out at lower rates. 66118 is in the bottom quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. The dental-visit rate here is about 48%, about 15 points below the Kansas average of 63%. Learn more about the findings and methodology on the political spectrum map.
Nearby Zip Codes
Sources and methodology
Precinct-level voting records used to fit the model come from Kansas Secretary of State, 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.