66404 is a Republican stronghold. About 15% of voters here vote Democratic and 85% Republican.
About 81% of adults in 66404 typically vote, above the U.S. average of about 62%. Among adults in 66404, ~12% vote Democratic, ~69% Republican, and ~19% don't vote. The map below shows estimated turnout by block group.
How 66404 compares
Among zip codes within 15 miles, 66404 leans more Republican than 8 of 9 neighbors.
66404 runs about 54 points more Republican than Kansas as a whole.
Why 66404 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 66404, not a ranked or complete list of what matters most.
Rural areas with a high white share vote Republican. 66404 sits in the bottom quarter on density and about 94% of residents are non-Hispanic white, about 9 points above the Kansas average of 85%. A high family-household share predicts Republican voting, and about 74% of households in 66404 are family households, above 76% of zip codes.
Never-married share, developed land, and voter turnout
Places that combine a low never-married share and a rural land-use pattern tend to turn out at a higher rate, as 66404, KS does.
Why turnout in 66404 looks the way it does
Homeowners vote more often than renters. About 97% of households in 66404 own their home, about 17 points above the Kansas average of 79%. 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.