99301 leans slightly Republican by roughly 12 points: about 44% of voters vote Democratic and 56% Republican.
About 58% of adults in 99301 typically vote, near the U.S. average of about 62%. Among adults in 99301, ~26% vote Democratic, ~32% Republican, and ~42% don't vote. The map below shows estimated turnout by block group.
How 99301 compares
Among zip codes within 15 miles, 99301 leans more Republican than 1 of 7 neighbors.
99301 runs about 29 points more Republican than Washington as a whole. Washington leans Democratic overall, while 99301 is one of the few Republican-leaning pockets.
Politics vary noticeably by block within 99301. The southeast side runs the most Democratic (D+14) and the northeast side runs the most Republican (R+71), a spread of about 85 points.
Why 99301 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 99301, not a ranked or complete list of what matters most.
99301 votes Republican even though it is densely developed (about 84%, far above the Washington average of 41%). State and regional patterns outweigh the Democratic lean that density usually predicts here. A high family-household share predicts Republican voting, and about 80% of households in 99301 are family households, above 92% of zip codes. 99301 runs against the grain of Washington, a Republican-leaning pocket in a Democratic-leaning state.
Preventive-care access and voter turnout
Places with limited routine preventive-care access tend to turn out at a lower rate; 99301, WA sits below the national average 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 99301 looks the way it does
Areas with limited routine healthcare access turn out at lower rates. 99301 is in the bottom quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. The uninsured rate here is about 21%, about 12 points above the Washington average of 9%. 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.