97818 leans Republican by roughly 20 points: about 40% of voters vote Democratic and 60% Republican.
About 45% of adults in 97818 typically vote, below the U.S. average of about 62%. Among adults in 97818, ~18% vote Democratic, ~27% Republican, and ~55% don't vote. The map below shows estimated turnout by block group.
How 97818 compares
97818 sits in a sparsely populated area with few comparable zip codes nearby.
97818 runs about 34 points more Republican than Oregon as a whole. Oregon leans Democratic overall, while 97818 is one of the few Republican-leaning pockets.
Politics vary noticeably by block within 97818. The southwest side is the most split-leaning (R+34) and the northwest side is the least split-leaning (R+3), a spread of about 31 points.
Why 97818 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 97818, not a ranked or complete list of what matters most.
Areas with low college attainment vote Republican. About 7% of adults in 97818 hold a bachelor's degree, about 22 points below the Oregon average of 29%. A high family-household share predicts Republican voting, and about 79% of households in 97818 are family households, above 89% of zip codes. 97818 runs against the grain of Oregon, 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; 97818, OR sits in the bottom tenth nationally 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 97818 looks the way it does
Areas with limited routine healthcare access turn out at lower rates. 97818 is in the bottom quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. The dental-visit rate here is about 46%, about 17 points below the Oregon average of 63%. Low high-school completion lines up with lower turnout, and about 60% of adults in 97818 have completed high school, in the bottom fraction of zip codes. 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.