Zillah leans heavily Republican by roughly 32 points: about 34% of voters vote Democratic and 66% Republican.
About 77% of adults in Zillah typically vote, above the U.S. average of about 62%. Among adults in Zillah, ~26% vote Democratic, ~51% Republican, and ~23% don't vote. The map below shows estimated turnout by block group.
How Zillah compares
Among cities within 25 miles, Zillah leans more Republican than 15 of 18 neighbors.
Zillah runs about 49 points more Republican than Washington as a whole. Washington leans Democratic overall, while Zillah is one of the few Republican-leaning pockets.
Politics vary noticeably by neighborhood within Zillah. The north side is the most Republican-leaning (R+47) and the south side is the least Republican-leaning (R+21), a spread of about 26 points.
Why Zillah leans the way it does
This analysis examined 14,881 data points per city to find what predicts political lean and turnout. The items below are a few correlations that stood out for Zillah, not a ranked or complete list of what matters most.
Zillah votes against the grain of Washington. Washington leans Democratic overall, while Zillah runs about 49 points more Republican. Dense places usually vote Democratic, but Zillah runs against that pattern.
Non-English at home and voter turnout
Places with a low non-English-at-home share tend to turn out at a higher rate; Zillah, WA sits in the bottom tenth nationally on this measure.
Why turnout in Zillah looks the way it does
Areas with limited routine healthcare access turn out at lower rates. Zillah is in the bottom quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Buena, WA R+12
- Toppenish, WA D+23
- Sawyer, WA R+11
- Granger, WA D+2
- Outlook, WA R+28
- Wapato, WA D+14
- Moxee, WA R+33
- Parker, WA R+8
- Sunnyside, WA D+4
- Harrah, WA R+4
Cities with Similar Populations
- Montgomery, PA R+45
- Waimea, HI D+24
- Carlisle, OH R+54
- Ashland, MO R+22
- Albany, LA R+72
- Villa Park, CA R+22
- Kountze, TX R+69
- Pinconning, MI R+41
- Hogansville, GA R+39
- Woodcliff Lake, NJ D+4
Sources and methodology
Precinct-level voting records used to fit the model come from Washington 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.