Yarmouth is a Republican stronghold. About 24% of voters here vote Democratic and 76% Republican.
About 69% of adults in Yarmouth typically vote, above the U.S. average of about 62%. Among adults in Yarmouth, ~17% vote Democratic, ~52% Republican, and ~31% don't vote. The map below shows estimated turnout by block group.
How Yarmouth compares
Among cities within 25 miles, Yarmouth is the most Republican-leaning.
Yarmouth runs about 39 points more Republican than Iowa as a whole.
Why Yarmouth 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 Yarmouth, not a ranked or complete list of what matters most.
Areas with low college attainment vote Republican. About 13% of adults in Yarmouth hold a bachelor's degree, about 12 points below the Iowa average of 24%. A high family-household share predicts Republican voting, and about 79% of households in Yarmouth are family households, above 87% of cities.
Population density and Republican lean
Places with low population density tend to lean Republican; Yarmouth, IA sits in the bottom quarter nationally on this measure.
Why turnout in Yarmouth looks the way it does
Areas with strong routine healthcare access turn out at higher rates. Yarmouth is in the top quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. The dental-visit rate here is about 70%, about 9 points above the U.S. average of 60%. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Pleasant Grove, IA R+50
- Morning Sun, IA R+45
- Mount Union, IA R+43
- Kossuth, IA R+28
- Sperry, IA R+43
- Mediapolis, IA R+30
- Northfield, IA R+50
- New London, IA R+35
- Danville, IA R+33
- Winfield, IA R+35
Cities with Similar Populations
- Letitia, NC R+62
- Godwinsville, GA R+57
- Talcott, WV R+55
- Northcutts Cove, TN R+73
- Campo, CO R+77
- Small, NC R+28
- Horsegall, SC R+42
- Byer, OH R+61
- Nightmute, AK D+22
- East Schuyler, NY R+37
Sources and methodology
Precinct-level voting records used to fit the model come from Iowa 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.