Allamakee County leans heavily Republican by roughly 32 points: about 34% of voters vote Democratic and 66% Republican.
About 83% of adults in Allamakee County typically vote, above the U.S. average of about 62%. Among adults in Allamakee County, ~28% vote Democratic, ~55% Republican, and ~17% don't vote. The map below shows estimated turnout by block group.
How Allamakee County compares
Among counties within 50 miles, Allamakee County leans more Republican than 7 of 10 neighbors.
Allamakee County runs about 19 points more Republican than Iowa as a whole.
Politics vary noticeably by city within Allamakee County. The northwest side is the most Republican-leaning (R+44) and the northeast side is the least Republican-leaning (R+28), a spread of about 17 points.
Why Allamakee County leans the way it does
Density, race composition, education, and family structure all sit close to their national averages in Allamakee County. The lean here lands roughly where demographic data alone would predict.
Paved land cover and Republican lean
Places with little paved surface tend to lean Republican; Allamakee County, IA sits in the bottom 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 Allamakee County looks the way it does
Turnout in Allamakee 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
- Winneshiek County, IA R+13
- Crawford County, WI R+26
- Clayton County, IA R+39
- Houston County, MN R+21
- Fayette County, IA R+30
- Vernon County, WI R+19
- Howard County, IA R+35
- La Crosse County, WI D+8
- Fillmore County, MN R+32
- Chickasaw County, IA R+40
Counties with Similar Populations
- Trigg County, KY R+56
- Wadena County, MN R+49
- Screven County, GA R+23
- Price County, WI R+36
- Roane County, WV R+60
- Craig County, OK R+53
- Noble County, OH R+55
- Swain County, NC R+27
- Hamilton County, FL R+24
- Calhoun County, SC R+15
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.