98058 leans Democratic by roughly 28 points: about 64% of voters vote Democratic and 36% Republican.
About 76% of adults in 98058 typically vote, above the U.S. average of about 62%. Among adults in 98058, ~49% vote Democratic, ~27% Republican, and ~24% don't vote. The map below shows estimated turnout by block group.
How 98058 compares
Among zip codes within 15 miles, 98058 leans more Democratic than 13 of 53 neighbors.
98058 runs about 10 points more Democratic than Washington as a whole.
Politics vary noticeably by block within 98058. The west side is the most Democratic-leaning (D+37) and the southeast side is the least Democratic-leaning (D+13), a spread of about 24 points.
Why 98058 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 98058, not a ranked or complete list of what matters most.
Dense areas vote Democratic. About 81% of residents in 98058 live in densely developed areas, about 45 points above the U.S. average of 36%. High college attainment predicts Democratic voting, and 98058 sits in the top quarter (about 44%, above 84% of zip codes).
Preventive-care access and voter turnout
Places with strong routine preventive-care access tend to turn out at a higher rate; 98058, WA sits in the top quarter nationally on this measure. Dental visits do not drive turnout; the rate reflects income, insurance, and healthcare access, which line up with who votes.
Why turnout in 98058 looks the way it does
Areas with strong routine healthcare access turn out at higher rates. 98058 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 68%, about 8 points above the U.S. average of 60%. 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.