Astoria leans slightly Democratic by roughly 14 points: about 57% of voters vote Democratic and 43% Republican.
About 79% of adults in Astoria typically vote, above the U.S. average of about 62%. Among adults in Astoria, ~45% vote Democratic, ~34% Republican, and ~21% don't vote. The map below shows estimated turnout by block group.
How Astoria compares
Among cities within 25 miles, Astoria leans more Democratic than 33 of 37 neighbors.
Politically, Astoria sits close to the rest of Oregon.
Politics vary noticeably by neighborhood within Astoria. The northwest side runs the most Democratic (D+44) and the northeast side runs the most Republican (R+28), a spread of about 72 points.
Why Astoria 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 Astoria, not a ranked or complete list of what matters most.
Dense areas vote Democratic. About 35% of residents in Astoria live in densely developed areas, above 82% of cities.
Paved land cover and Democratic lean
Places with extensive paved surfaces tend to lean Democratic; Astoria, OR sits in the top quarter nationally on this measure. Paved ground does not change how people vote; it mostly reflects how urban and built-up a place is.
Why turnout in Astoria looks the way it does
Turnout in Astoria 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
- Fern Hill, OR R+20
- Miles Crossing, OR R+31
- Jeffers Garden, OR R+23
- Olney, OR R+20
- Melville, OR R+24
- Warrenton, OR R+7
- Svensen, OR R+21
- Hammond, OR R+7
- West, OR Even
- Knappa, OR R+26
Cities with Similar Populations
- Colonial Park, PA D+18
- Boulder City, NV R+17
- West Park, FL D+49
- Bolivar, MO R+54
- Cody, WY R+44
- Vidalia, GA R+19
- Espanola, NM D+18
- Setauket-East Setauket, NY D+3
- Belchertown, MA D+24
- Warren, PA R+25
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.