66220 leans slightly Republican by roughly 8 points: about 46% of voters vote Democratic and 54% Republican.
About 92% of adults in 66220 typically vote, above the U.S. average of about 62%. Among adults in 66220, ~42% vote Democratic, ~50% Republican, and ~8% don't vote. The map below shows estimated turnout by block group.
How 66220 compares
Among zip codes within 15 miles, 66220 leans more Republican than 43 of 54 neighbors.
66220 runs about 9 points more Democratic than Kansas as a whole.
Politics vary noticeably by block within 66220. The northeast side runs the most Democratic (D+11) and the west side runs the most Republican (R+12), a spread of about 23 points.
Why 66220 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 66220, not a ranked or complete list of what matters most.
Areas with many family households vote Republican. About 85% of households in 66220 are family households, about 18 points above the U.S. average of 67%. Dense places usually vote Democratic, but 66220 runs against that pattern.
High-school completion, uninsured rate, and voter turnout
Places that combine high-school-completion-heavy adults and a low uninsured rate tend to turn out at a higher rate, as 66220, KS does.
Why turnout in 66220 looks the way it does
Areas with strong routine healthcare access turn out at higher rates. 66220 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 78%, about 18 points above the U.S. average of 60%. Homeowners vote more often than renters, and about 90% of households in 66220 own their home, compared to around 75% in nearby zip codes. High high-school completion lines up with higher turnout, and about 98% of adults in 66220 have completed high school, above 96% of zip codes. Learn more about the findings and methodology on the political spectrum map.
Nearby Zip Codes
Zip Codes with Similar Populations
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.