Avon is a Republican stronghold. About 21% of voters here vote Democratic and 79% Republican.
About 64% of adults in Avon typically vote, near the U.S. average of about 62%. Among adults in Avon, ~13% vote Democratic, ~51% Republican, and ~36% don't vote. The map below shows estimated turnout by block group.
How Avon compares
Among cities within 25 miles, Avon leans more Republican than 9 of 18 neighbors.
Avon runs about 28 points more Republican than South Dakota as a whole.
Why Avon 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 Avon, not a ranked or complete list of what matters most.
Areas with many family households vote Republican. About 78% of households in Avon are family households, about 11 points above the U.S. average of 67%.
Population density and Republican lean
Places with low population density tend to lean Republican; Avon, SD sits in the bottom quarter nationally on this measure.
Why turnout in Avon looks the way it does
Areas with limited routine healthcare access turn out at lower rates. Avon is in the bottom quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Dante, SD R+46
- Tyndall, SD R+57
- Wagner, SD R+19
- Springfield, SD R+58
- Tripp, SD R+63
- Santee, NE R+9
- Niobrara, NE R+16
- Delmont, SD R+65
- Marty, SD R+4
Cities with Similar Populations
- Whitefield, OK R+72
- Theta, TN R+58
- Leawood, MO R+43
- Nortonville, KS R+55
- South Montrose, PA R+48
- Scotland, PA R+37
- Caspian, MI R+28
- Gardiner, MT R+6
- Gratz, PA R+66
- Pelham, TN R+66
All Local Stats
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Sources and methodology
Precinct-level voting records used to fit the model come from South 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.