Tillamook County leans slightly Republican by roughly 8 points: about 46% of voters vote Democratic and 54% Republican.
About 79% of adults in Tillamook County typically vote, above the U.S. average of about 62%. Among adults in Tillamook County, ~36% vote Democratic, ~43% Republican, and ~21% don't vote. The map below shows estimated turnout by block group.
How Tillamook County compares
Among counties within 50 miles, Tillamook County is the most Republican-leaning.
Tillamook County runs about 23 points more Republican than Oregon as a whole. Oregon leans Democratic overall, while Tillamook County is one of the few Republican-leaning pockets.
Politics vary noticeably by city within Tillamook County. The north side runs the most Democratic (D+12) and the southeast side runs the most Republican (R+32), a spread of about 44 points.
Why Tillamook County leans the way it does
This analysis examined 14,881 data points per county to find what predicts political lean and turnout. The items below are a few correlations that stood out for Tillamook County, not a ranked or complete list of what matters most.
Tillamook County votes against the grain of Oregon. Oregon leans Democratic overall, while Tillamook County runs about 23 points more Republican.
Preventive-care access and voter turnout
Places with strong routine preventive-care access tend to turn out at a higher rate; Tillamook County, OR sits above the national average on this measure. Dental visits do not drive turnout; the rate reflects income, insurance, and healthcare access, which line up with who votes.
Why turnout in Tillamook County looks the way it does
Turnout in Tillamook County 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 Counties
- Yamhill County, OR R+5
- Clatsop County, OR D+6
- Washington County, OR D+32
- Polk County, OR R+4
- Lincoln County, OR D+13
- Columbia County, OR R+18
- Marion County, OR D+3
- Wahkiakum County, WA R+19
- Multnomah County, OR D+52
- Clackamas County, OR D+13
Counties with Similar Populations
- Orleans County, VT R+17
- San Jacinto County, TX R+57
- White County, TN R+66
- Logan County, KY R+56
- Adams County, OH R+64
- Fluvanna County, VA R+16
- Union County, SC R+28
- McDonough County, IL R+11
- San Miguel County, NM D+24
- West Baton Rouge Parish, LA R+9
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.