98330 leans heavily Republican by roughly 32 points: about 34% of voters vote Democratic and 66% Republican.
About 68% of adults in 98330 typically vote, above the U.S. average of about 62%. Among adults in 98330, ~23% vote Democratic, ~45% Republican, and ~32% don't vote. The map below shows estimated turnout by block group.
How 98330 compares
Among zip codes within 15 miles, 98330 leans more Republican than 1 of 3 neighbors.
98330 runs about 50 points more Republican than Washington as a whole. Washington leans Democratic overall, while 98330 is one of the few Republican-leaning pockets.
Politics vary noticeably by block within 98330. The southwest side is the most Republican-leaning (R+45) and the east side is the least Republican-leaning (R+30), a spread of about 15 points.
Why 98330 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 98330, not a ranked or complete list of what matters most.
98330 votes against the grain of Washington. Washington leans Democratic overall, while 98330 runs about 50 points more Republican. Rural areas vote Republican, and 98330 sits in the bottom quarter on density (about 4%, below 86% of zip codes).
Population density and Republican lean
Places with low population density tend to lean Republican; 98330, WA sits in the bottom quarter nationally on this measure.
Why turnout in 98330 looks the way it does
Areas with high high-school completion turn out at higher rates. About 97% of adults in 98330 have completed high school, about 6 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.