98329 leans slightly Republican by roughly 6 points: about 47% of voters vote Democratic and 53% Republican.
About 91% of adults in 98329 typically vote, above the U.S. average of about 62%. Among adults in 98329, ~43% vote Democratic, ~48% Republican, and ~9% don't vote. The map below shows estimated turnout by block group.
How 98329 compares
Among zip codes within 15 miles, 98329 leans more Republican than 22 of 26 neighbors.
98329 runs about 24 points more Republican than Washington as a whole. Washington leans Democratic overall, while 98329 is one of the few Republican-leaning pockets.
Why 98329 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 98329, not a ranked or complete list of what matters most.
98329 votes against the grain of Washington. Washington leans Democratic overall, while 98329 runs about 24 points more Republican. A high family-household share predicts Republican voting, and about 75% of households in 98329 are family households, above 79% of zip codes.
Homeownership and voter turnout
Places with homeowner-heavy households tend to turn out at a higher rate; 98329, WA sits in the top quarter nationally on this measure.
Why turnout in 98329 looks the way it does
Areas with strong routine healthcare access turn out at higher rates. 98329 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%. Homeowners vote more often than renters, and about 89% of households in 98329 own their home, above 83% of zip codes. High high-school completion lines up with higher turnout, and about 96% of adults in 98329 have completed high school, above 83% 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 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.