97355 leans heavily Republican by roughly 34 points: about 33% of voters vote Democratic and 67% Republican.
About 75% of adults in 97355 typically vote, above the U.S. average of about 62%. Among adults in 97355, ~25% vote Democratic, ~50% Republican, and ~25% don't vote. The map below shows estimated turnout by block group.
How 97355 compares
Among zip codes within 15 miles, 97355 leans more Republican than 3 of 9 neighbors.
97355 runs about 49 points more Republican than Oregon as a whole. Oregon leans Democratic overall, while 97355 is one of the few Republican-leaning pockets.
Politics vary noticeably by block within 97355. The northeast side is the most Republican-leaning (R+47) and the northwest side is the least Republican-leaning (R+26), a spread of about 21 points.
Why 97355 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 97355, not a ranked or complete list of what matters most.
97355 votes against the grain of Oregon. Oregon leans Democratic overall, while 97355 runs about 49 points more Republican.
Population density and Democratic lean
Places with high population density tend to lean Democratic; 97355, OR sits in the top quarter nationally on this measure.
Why turnout in 97355 looks the way it does
Turnout in 97355 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 Oregon Secretary of State, Elections Division, 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.