97021 leans heavily Republican by roughly 46 points: about 27% of voters vote Democratic and 73% Republican.
About 60% of adults in 97021 typically vote, near the U.S. average of about 62%. Among adults in 97021, ~16% vote Democratic, ~44% Republican, and ~40% don't vote. The map below shows estimated turnout by block group.
How 97021 compares
Among zip codes within 15 miles, 97021 is the most Republican-leaning.
97021 runs about 60 points more Republican than Oregon as a whole. Oregon leans Democratic overall, while 97021 is one of the few Republican-leaning pockets.
Why 97021 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 97021, not a ranked or complete list of what matters most.
97021 votes against the grain of Oregon. Oregon leans Democratic overall, while 97021 runs about 60 points more Republican. A high family-household share predicts Republican voting, and about 74% of households in 97021 are family households, above 76% of zip codes.
Paved land cover and Republican lean
Places with little paved surface tend to lean Republican; 97021, OR sits in the bottom 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 97021 looks the way it does
Turnout in 97021 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.