98377 leans heavily Republican by roughly 30 points: about 35% of voters vote Democratic and 65% Republican.
About 80% of adults in 98377 typically vote, above the U.S. average of about 62%. Among adults in 98377, ~28% vote Democratic, ~52% Republican, and ~20% don't vote. The map below shows estimated turnout by block group.
How 98377 compares
98377 sits in a sparsely populated area with few comparable zip codes nearby.
98377 runs about 49 points more Republican than Washington as a whole. Washington leans Democratic overall, while 98377 is one of the few Republican-leaning pockets.
Why 98377 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 98377, not a ranked or complete list of what matters most.
98377 votes against the grain of Washington. Washington leans Democratic overall, while 98377 runs about 49 points more Republican. Rural areas vote Republican, and 98377 sits in the bottom quarter on density (about 3%, below 92% of zip codes).
Developed land and Republican lean
Places with a rural land-use pattern tend to lean Republican; 98377, WA sits in the bottom tenth nationally on this measure. Developed land does not change how people vote; it mostly reflects how urban a place is.
Why turnout in 98377 looks the way it does
Homeowners vote more often than renters. About 90% of households in 98377 own their home, about 17 points above the Washington average of 73%. 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.