97303 is a true toss-up. About 51% of voters here vote Democratic and 49% Republican.
About 72% of adults in 97303 typically vote, above the U.S. average of about 62%. Among adults in 97303, ~37% vote Democratic, ~35% Republican, and ~28% don't vote. The map below shows estimated turnout by block group.
How 97303 compares
Among zip codes within 15 miles, 97303 sits roughly in the middle of the political spectrum, with 11 neighbors leaning further in the place's direction and 7 leaning the other way.
97303 runs about 13 points more Republican than Oregon as a whole.
Politics vary noticeably by block within 97303. The south side runs the most Democratic (D+10) and the northwest side runs the most Republican (R+25), a spread of about 34 points.
Why 97303 leans the way it does
Density, race composition, education, and family structure all sit close to their national averages in 97303. The lean here lands roughly where demographic data alone would predict.
Paved land cover and Democratic lean
Places with extensive paved surfaces tend to lean Democratic; 97303, 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 97303 looks the way it does
Turnout in 97303 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.