66423 is a Republican stronghold. About 23% of voters here vote Democratic and 77% Republican.
About 64% of adults in 66423 typically vote, near the U.S. average of about 62%. Among adults in 66423, ~15% vote Democratic, ~49% Republican, and ~36% don't vote. The map below shows estimated turnout by block group.
How 66423 compares
Among zip codes within 15 miles, 66423 leans more Republican than 4 of 7 neighbors.
66423 runs about 37 points more Republican than Kansas as a whole.
Why 66423 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 66423, not a ranked or complete list of what matters most.
Areas with low college attainment vote Republican. About 15% of adults in 66423 hold a bachelor's degree, about 11 points below the Kansas average of 27%. Rural areas with a high white share vote Republican. Non-Hispanic white share in 66423 is about 92%, about 20 points above the U.S. average of 72%.
Preventive-care access and voter turnout
Places with strong routine preventive-care access tend to turn out at a higher rate; 66423, KS 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 66423 looks the way it does
Areas with strong routine healthcare access turn out at higher rates. 66423 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 68%, about 8 points above the U.S. average of 60%. 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.