97109 leans Republican by roughly 26 points: about 37% of voters vote Democratic and 63% Republican.
About 84% of adults in 97109 typically vote, above the U.S. average of about 62%. Among adults in 97109, ~31% vote Democratic, ~53% Republican, and ~16% don't vote. The map below shows estimated turnout by block group.
How 97109 compares
Among zip codes within 15 miles, 97109 leans more Republican than 6 of 7 neighbors.
97109 runs about 41 points more Republican than Oregon as a whole. Oregon leans Democratic overall, while 97109 is one of the few Republican-leaning pockets.
Why 97109 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 97109, not a ranked or complete list of what matters most.
97109 votes against the grain of Oregon. Oregon leans Democratic overall, while 97109 runs about 41 points more Republican. Rural areas vote Republican, and 97109 sits in the bottom quarter on density (about 6%, below 79% of zip codes). A high family-household share predicts Republican voting, and about 83% of households in 97109 are family households, above 96% of zip codes.
Preventive-care access and voter turnout
Places with strong routine preventive-care access tend to turn out at a higher rate; 97109, OR sits in the top quarter 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 97109 looks the way it does
Areas with strong routine healthcare access turn out at higher rates. 97109 is in the top quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. The dental-visit rate here is about 68%, about 8 points above the U.S. average of 60%. Homeowners vote more often than renters, and about 90% of households in 97109 own their home, above 87% 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.