Wilsonville, OR Political Map | Democrat & Republican Areas in Wilsonville

By the BestNeighborhood data science team. Last updated May 2026.

Wilsonville leans Democratic by roughly 22 points: about 61% of voters vote Democratic and 39% Republican.

 

About 78% of adults in Wilsonville typically vote, above the U.S. average of about 62%. Among adults in Wilsonville, ~48% vote Democratic, ~30% Republican, and ~22% don't vote. The map below shows estimated turnout by block group.

How Wilsonville compares

Among cities within 25 miles, Wilsonville leans more Democratic than 81 of 102 neighbors.

Wilsonville runs about 7 points more Democratic than Oregon as a whole.

Politics vary noticeably by neighborhood within Wilsonville. The southeast side is the most Democratic-leaning (D+28) and the southwest side is the least Democratic-leaning (D+10), a spread of about 18 points.

Why Wilsonville leans the way it does

This analysis examined 14,881 data points per city to find what predicts political lean and turnout. The items below are a few correlations that stood out for Wilsonville, not a ranked or complete list of what matters most.

Dense areas vote Democratic. About 72% of residents in Wilsonville live in densely developed areas, about 36 points above the U.S. average of 36%. High college attainment predicts Democratic voting, and Wilsonville sits in the top quarter (about 48%, above 93% of cities). A high never-married share predicts Democratic voting, and about 31% of adults in Wilsonville have never been married, above 78% of cities.

Walkability and Democratic lean

Places with a highly walkable street grid tend to lean Democratic; Wilsonville, OR sits in the top tenth nationally on this measure. A walkable street grid does not change how people vote; it mostly reflects how urban a place is.

Why turnout in Wilsonville looks the way it does

Areas with strong routine healthcare access turn out at higher rates. Wilsonville 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 70%, about 10 points above the U.S. average of 60%. High high-school completion lines up with higher turnout, and about 96% of adults in Wilsonville have completed high school, above 84% of cities. Learn more about the findings and methodology on the political spectrum map.

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.