Indian River County leans Republican by roughly 20 points: about 40% of voters vote Democratic and 60% Republican.
About 80% of adults in Indian River County typically vote, above the U.S. average of about 62%. Among adults in Indian River County, ~32% vote Democratic, ~48% Republican, and ~20% don't vote. The map below shows estimated turnout by block group.
How Indian River County compares
Among counties within 50 miles, Indian River County leans more Republican than 2 of 4 neighbors.
Indian River County runs about 7 points more Republican than Florida as a whole.
Politics vary noticeably by city within Indian River County. The southwest side is the most Republican-leaning (R+35) and the southeast side is the least Republican-leaning (R+17), a spread of about 18 points.
Why Indian River County leans the way it does
This analysis examined 14,881 data points per county to find what predicts political lean and turnout. The items below are a few correlations that stood out for Indian River County, not a ranked or complete list of what matters most.
Indian River County votes Republican even though it is densely developed (about 71%, modestly above the Florida average of 57%). Here an older population outweighs the Democratic lean that density usually predicts.
Cholesterol-screening access and voter turnout
Places with high cholesterol-screening access tend to turn out at a higher rate; Indian River County, FL sits in the top tenth nationally on this measure. Cholesterol screening does not drive turnout; it reflects income, insurance, and healthcare access.
Why turnout in Indian River County looks the way it does
Areas with strong routine healthcare access turn out at higher rates. Indian River County 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 62%, above 59% of counties. Learn more about the findings and methodology on the political spectrum map.
Nearby Counties
- St. Lucie County, FL R+5
- Okeechobee County, FL R+46
- Martin County, FL R+25
- Brevard County, FL R+19
- Highlands County, FL R+33
- Glades County, FL R+47
- Osceola County, FL Even
- Palm Beach County, FL D+5
- Hendry County, FL R+26
- Orange County, FL D+14
Counties with Similar Populations
- Alexandria City, VA D+55
- Jackson County, MI R+14
- Ouachita Parish, LA R+13
- St. Clair County, MI R+31
- Catawba County, NC R+33
- Fairfield County, OH R+23
- Rensselaer County, NY D+6
- Martin County, FL R+25
- Stearns County, MN R+21
- Centre County, PA D+8
Sources and methodology
Precinct-level voting records used to fit the model come from Florida Division of 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.