Cooper Mountain Aloha South leans Democratic by roughly 28 points: about 64% of voters vote Democratic and 36% Republican.
About 75% of adults in Cooper Mountain Aloha South typically vote, above the U.S. average of about 62%. Among adults in Cooper Mountain Aloha South, ~48% vote Democratic, ~27% Republican, and ~25% don't vote. The map below shows estimated turnout by block group.
How Cooper Mountain Aloha South compares
Among neighborhoods within 5 miles, Cooper Mountain Aloha South is the least Democratic-leaning.
Cooper Mountain Aloha South runs about 14 points more Democratic than Oregon as a whole.
Politics vary noticeably by block within Cooper Mountain Aloha South. The southeast side is the most Democratic-leaning (D+40) and the southwest side is the least Democratic-leaning (D+19), a spread of about 20 points.
Why Cooper Mountain Aloha South leans the way it does
This analysis examined 14,881 data points per neighborhood to find what predicts political lean and turnout. The items below are a few correlations that stood out for Cooper Mountain Aloha South, not a ranked or complete list of what matters most.
Areas with high college attainment vote Democratic. About 55% of adults in Cooper Mountain Aloha South hold a bachelor's degree, about 27 points above the U.S. average of 28%.
Population density and Democratic lean
Places with high population density tend to lean Democratic; Cooper Mountain Aloha South, Beaverton, OR sits above the national average on this measure.
Why turnout in Cooper Mountain Aloha South looks the way it does
Turnout in Cooper Mountain Aloha South 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 Neighborhoods
- Sexton Mountain, Beaverton, OR D+38
- West Beaverton, Beaverton, OR D+39
- Cooper Mountain-Aloha North, Aloha, OR D+29
- Highlands, Beaverton, OR D+38
- Neighbors Southwest, Beaverton, OR D+42
- South Beaverton, Beaverton, OR D+41
- Central Beaverton, Beaverton, OR D+48
- Five Oaks, Beaverton, OR D+41
- Greenway, Beaverton, OR D+43
- Vose, Beaverton, OR D+39
Neighborhoods with Similar Populations
- Addicks-Park ten, Houston, TX D+16
- Longwood-Winton Grove, Hayward, CA D+37
- Security, Security-Widefield, CO R+11
- Govans, Baltimore, MD D+85
- Water Catchment Area, West Palm Beach, FL D+14
- Corlett, Cleveland, OH D+89
- Lakeview, New Orleans, LA Even
- Issaquah Highlands, Issaquah, WA D+45
- West Sugar Creek, Charlotte, NC D+71
- Lasalle, Buffalo, NY D+78
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.