99164 is a Democratic stronghold. About 84% of voters here vote Democratic and 16% Republican.
About 28% of adults in 99164 typically vote, below the U.S. average of about 62%. Among adults in 99164, ~24% vote Democratic, ~4% Republican, and ~72% don't vote. The map below shows estimated turnout by block group.
How 99164 compares
Among zip codes within 15 miles, 99164 is the most Democratic-leaning.
99164 runs about 50 points more Democratic than Washington as a whole.
Why 99164 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 99164, not a ranked or complete list of what matters most.
Areas with high college attainment vote Democratic. About 81% of adults in 99164 hold a bachelor's degree, about 52 points above the U.S. average of 28%. Density combined with diversity predicts Democratic voting, and non-Hispanic white share in 99164 is about 62%, compared to around 86% in nearby zip codes. A high never-married share predicts Democratic voting, and about 97% of adults in 99164 have never been married, in the top fraction of zip codes.
Population density and Democratic lean
Places with high population density tend to lean Democratic; 99164, WA sits in the top tenth nationally on this measure.
Why turnout in 99164 looks the way it does
Renters vote less often than owners. About 97% of households in 99164 rent, about 72 points above the U.S. average of 25%. Limited routine healthcare access lines up with lower turnout, and 99164 sits in the bottom quarter on routine-care measures. 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.