97004 leans Republican by roughly 26 points: about 37% of voters vote Democratic and 63% Republican.
About 89% of adults in 97004 typically vote, above the U.S. average of about 62%. Among adults in 97004, ~33% vote Democratic, ~56% Republican, and ~11% don't vote. The map below shows estimated turnout by block group.
How 97004 compares
Among zip codes within 15 miles, 97004 leans more Republican than 17 of 19 neighbors.
97004 runs about 41 points more Republican than Oregon as a whole. Oregon leans Democratic overall, while 97004 is one of the few Republican-leaning pockets.
Politics vary noticeably by block within 97004. The southwest side is the most Republican-leaning (R+34) and the northwest side is the least Republican-leaning (R+21), a spread of about 13 points.
Why 97004 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 97004, not a ranked or complete list of what matters most.
97004 votes against the grain of Oregon. Oregon leans Democratic overall, while 97004 runs about 41 points more Republican.
Preventive-care access and voter turnout
Places with strong routine preventive-care access tend to turn out at a higher rate; 97004, 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 97004 looks the way it does
Homeowners vote more often than renters. About 92% of households in 97004 own their home, about 19 points above the Oregon average of 74%. High high-school completion lines up with higher turnout, and about 96% of adults in 97004 have completed high school, above 80% 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.