98355 leans heavily Republican by roughly 38 points: about 31% of voters vote Democratic and 69% Republican.
About 71% of adults in 98355 typically vote, above the U.S. average of about 62%. Among adults in 98355, ~22% vote Democratic, ~49% Republican, and ~29% don't vote. The map below shows estimated turnout by block group.
How 98355 compares
Among zip codes within 15 miles, 98355 leans more Republican than 4 of 5 neighbors.
98355 runs about 55 points more Republican than Washington as a whole. Washington leans Democratic overall, while 98355 is one of the few Republican-leaning pockets.
Why 98355 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 98355, not a ranked or complete list of what matters most.
98355 votes against the grain of Washington. Washington leans Democratic overall, while 98355 runs about 55 points more Republican. Rural areas vote Republican, and 98355 sits in the bottom quarter on density (about 3%, below 93% of zip codes).
Paved land cover and Republican lean
Places with little paved surface tend to lean Republican; 98355, WA sits in the bottom tenth 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 98355 looks the way it does
Areas with high high-school completion turn out at higher rates. About 97% of adults in 98355 have completed high school, about 5 points above the Washington average of 91%. 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.