97304 leans slightly Democratic by roughly 10 points: about 55% of voters vote Democratic and 45% Republican.
About 80% of adults in 97304 typically vote, above the U.S. average of about 62%. Among adults in 97304, ~44% vote Democratic, ~36% Republican, and ~20% don't vote. The map below shows estimated turnout by block group.
How 97304 compares
Among zip codes within 15 miles, 97304 leans more Democratic than 11 of 15 neighbors.
97304 runs about 5 points more Republican than Oregon as a whole.
Politics vary noticeably by block within 97304. The southeast side runs the most Democratic (D+20) and the northwest side runs the most Republican (R+22), a spread of about 42 points.
Why 97304 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 97304, not a ranked or complete list of what matters most.
Areas with high college attainment vote Democratic. About 39% of adults in 97304 hold a bachelor's degree, about 11 points above the U.S. average of 28%.
Paved land cover and Democratic lean
Places with extensive paved surfaces tend to lean Democratic; 97304, OR sits in the top quarter nationally on this measure. Paved ground does not change how people vote; it mostly reflects how urban and built-up a place is.
Why turnout in 97304 looks the way it does
Turnout in 97304 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.