Pleasant Hill leans slightly Republican by roughly 14 points: about 43% of voters vote Democratic and 57% Republican.
About 89% of adults in Pleasant Hill typically vote, above the U.S. average of about 62%. Among adults in Pleasant Hill, ~38% vote Democratic, ~51% Republican, and ~11% don't vote. The map below shows estimated turnout by block group.
How Pleasant Hill compares
Among cities within 25 miles, Pleasant Hill leans more Republican than 13 of 35 neighbors.
Pleasant Hill runs about 29 points more Republican than Oregon as a whole. Oregon leans Democratic overall, while Pleasant Hill is one of the few Republican-leaning pockets.
Politics vary noticeably by neighborhood within Pleasant Hill. The northeast side is the most Republican-leaning (R+23) and the northwest side is the least Republican-leaning (R+11), a spread of about 11 points.
Why Pleasant Hill 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 Pleasant Hill, not a ranked or complete list of what matters most.
Pleasant Hill votes against the grain of Oregon. Oregon leans Democratic overall, while Pleasant Hill runs about 29 points more Republican. A high family-household share predicts Republican voting, and about 76% of households in Pleasant Hill are family households, above 80% of cities.
Never-married share and voter turnout
Places with a low never-married share tend to turn out at a higher rate; Pleasant Hill, OR sits in the bottom tenth nationally on this measure.
Why turnout in Pleasant Hill looks the way it does
Turnout in Pleasant Hill 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 Cities
- Trent, OR R+17
- Goshen, OR R+5
- Fall Creek, OR R+27
- Dexter, OR R+25
- Springfield, OR D+8
- Creswell, OR R+8
- Lowell, OR R+22
- Minnow, OR R+24
- Saginaw, OR R+11
Cities with Similar Populations
- Delta Junction, AK R+43
- Jeffersonville, VT D+5
- Rangely, CO R+53
- Millport, AL R+78
- Arlee, MT R+9
- Colwyn, PA D+76
- Roanoke, IL R+60
- Ash Flat, AR R+66
- Greenfield, IA R+38
- Wilson, OK R+73
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.