99033 is a Republican stronghold. About 17% of voters here vote Democratic and 83% Republican.
About 62% of adults in 99033 typically vote, near the U.S. average of about 62%. Among adults in 99033, ~10% vote Democratic, ~52% Republican, and ~38% don't vote. The map below shows estimated turnout by block group.
How 99033 compares
Among zip codes within 15 miles, 99033 is the most Republican-leaning.
99033 runs about 84 points more Republican than Washington as a whole. Washington leans Democratic overall, while 99033 is one of the few Republican-leaning pockets.
Why 99033 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 99033, not a ranked or complete list of what matters most.
99033 votes against the grain of Washington. Washington leans Democratic overall, while 99033 runs about 84 points more Republican.
Never-married share, developed land, and voter turnout
Places that combine a low never-married share and a rural land-use pattern tend to turn out at a higher rate, as 99033, WA does.
Why turnout in 99033 looks the way it does
Turnout in 99033 sits close to the national pattern. Routine healthcare access, homeownership, education, and food security all land near their national averages here. 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.