Clatsop County leans slightly Democratic by roughly 6 points: about 53% of voters vote Democratic and 47% Republican.
About 77% of adults in Clatsop County typically vote, above the U.S. average of about 62%. Among adults in Clatsop County, ~41% vote Democratic, ~36% Republican, and ~23% don't vote. The map below shows estimated turnout by block group.
How Clatsop County compares
Among counties within 50 miles, Clatsop County is the most Democratic-leaning.
Clatsop County runs about 8 points more Republican than Oregon as a whole.
Politics vary noticeably by city within Clatsop County. The north side runs the most Democratic (D+25) and the northeast side runs the most Republican (R+25), a spread of about 50 points.
Why Clatsop County leans the way it does
Density, race composition, education, and family structure all sit close to their national averages in Clatsop County. The lean here lands roughly where demographic data alone would predict.
Preventive-care access and voter turnout
Places with strong routine preventive-care access tend to turn out at a higher rate; Clatsop County, OR sits in the top quarter nationally 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 Clatsop County looks the way it does
Turnout in Clatsop 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
- Wahkiakum County, WA R+19
- Pacific County, WA R+5
- Tillamook County, OR R+9
- Cowlitz County, WA R+18
- Columbia County, OR R+18
- Lewis County, WA R+29
- Grays Harbor County, WA R+8
- Washington County, OR D+32
- Clark County, WA D+7
- Yamhill County, OR R+5
Counties with Similar Populations
- Cheatham County, TN R+55
- Tioga County, PA R+50
- Isanti County, MN R+34
- Preble County, OH R+58
- Warren County, TN R+62
- Williams County, ND R+61
- Upshur County, TX R+67
- Shawano County, WI R+35
- Tallapoosa County, AL R+39
- Tift County, GA R+22
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.