66030 leans Republican by roughly 18 points: about 41% of voters vote Democratic and 59% Republican.
About 67% of adults in 66030 typically vote, near the U.S. average of about 62%. Among adults in 66030, ~27% vote Democratic, ~40% Republican, and ~33% don't vote. The map below shows estimated turnout by block group.
How 66030 compares
Among zip codes within 15 miles, 66030 leans more Republican than 12 of 20 neighbors.
Politically, 66030 sits close to the rest of Kansas.
Politics vary noticeably by block within 66030. The southwest side is the most Republican-leaning (R+29) and the east side is the least Republican-leaning (R+9), a spread of about 19 points.
Why 66030 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 66030, not a ranked or complete list of what matters most.
66030 votes Republican even though it is densely developed (about 70%, far above the Kansas average of 19%). State and regional patterns outweigh the Democratic lean that density usually predicts here. A high family-household share predicts Republican voting, and about 75% of households in 66030 are family households, above 79% of zip codes.
Preventive-care access and voter turnout
Places with strong routine preventive-care access tend to turn out at a higher rate; 66030, 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 66030 looks the way it does
Areas with strong routine healthcare access turn out at higher rates. 66030 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 69%, about 9 points above the U.S. average of 60%. High high-school completion lines up with higher turnout, and about 96% of adults in 66030 have completed high school, above 82% 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.