99335 is a Republican stronghold. About 13% of voters here vote Democratic and 87% Republican.
About 39% of adults in 99335 typically vote, below the U.S. average of about 62%. Among adults in 99335, ~5% vote Democratic, ~34% Republican, and ~61% don't vote. The map below shows estimated turnout by block group.
How 99335 compares
99335 runs about 92 points more Republican than Washington as a whole. Washington leans Democratic overall, while 99335 is one of the few Republican-leaning pockets.
Why 99335 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 99335, not a ranked or complete list of what matters most.
Rural areas vote Republican. About 4% of residents in 99335 live in densely developed areas, about 37 points below the Washington average of 41%. 99335 runs against the grain of Washington, a Republican-leaning pocket in a Democratic-leaning state.
Paved land cover and Republican lean
Places with little paved surface tend to lean Republican; 99335, WA sits in the bottom quarter nationally on this measure. Paved ground does not change how people vote; it mostly reflects how urban and built-up a place is.
Why turnout in 99335 looks the way it does
Areas with limited routine healthcare access turn out at lower rates. 99335 is in the bottom quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. Renters vote less often than owners, and about 47% of households in 99335 rent, compared to around 30% in nearby 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 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.