Foster County is a Republican stronghold. About 25% of voters here vote Democratic and 75% Republican.
About 97% of adults in Foster County typically vote, above the U.S. average of about 62%. Among adults in Foster County, ~24% vote Democratic, ~73% Republican, and ~3% don't vote. The map below shows estimated turnout by block group.
How Foster County compares
Among counties within 50 miles, Foster County leans more Republican than 5 of 7 neighbors.
Foster County runs about 14 points more Republican than North Dakota as a whole.
Politics vary noticeably by city within Foster County. The southeast side is the most Republican-leaning (R+58) and the west side is the least Republican-leaning (R+45), a spread of about 13 points.
Why Foster County leans the way it does
Density, race composition, education, and family structure all sit close to their national averages in Foster 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; Foster County, ND 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 Foster County looks the way it does
Homeowners vote more often than renters. About 80% of households in Foster County own their home, about 5 points above the U.S. average of 75%. Learn more about the findings and methodology on the political spectrum map.
Nearby Counties
- Eddy County, ND R+46
- Wells County, ND R+58
- Benson County, ND D+2
- Griggs County, ND R+52
- Stutsman County, ND R+34
- Ramsey County, ND R+30
- Nelson County, ND R+43
- Kidder County, ND R+61
- Barnes County, ND R+36
- Steele County, ND R+33
Counties with Similar Populations
- Petersburg Census Area, AK R+4
- Webster County, NE R+69
- Reagan County, TX R+55
- Hemphill County, TX R+66
- Bennett County, SD R+7
- Nance County, NE R+60
- Chautauqua County, KS R+73
- Aleutians East Borough, AK D+6
- Sutton County, TX R+46
- Kimball County, NE R+68
All Local Stats
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Sources and methodology
Precinct-level voting records used to fit the model come from North Dakota Secretary of State, Elections, 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.