Princeton, IA Political Map | Democrat & Republican Areas in Princeton

By the BestNeighborhood data science team. Last updated May 2026.

Princeton leans heavily Republican by roughly 30 points: about 35% of voters vote Democratic and 65% Republican.

 

About 86% of adults in Princeton typically vote, above the U.S. average of about 62%. Among adults in Princeton, ~30% vote Democratic, ~56% Republican, and ~14% don't vote. The map below shows estimated turnout by block group.

How Princeton compares

Among cities within 25 miles, Princeton leans more Republican than 34 of 76 neighbors.

Princeton runs about 18 points more Republican than Iowa as a whole.

Why Princeton leans the way it does

Density, race composition, education, and family structure all sit close to their national averages in Princeton. The lean here lands roughly where demographic data alone would predict.

High-school completion, uninsured rate, and voter turnout

Places that combine high-school-completion-heavy adults and a low uninsured rate tend to turn out at a higher rate, as Princeton, IA does.

Why turnout in Princeton looks the way it does

Areas with strong routine healthcare access turn out at higher rates. Princeton 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 72%, about 12 points above the U.S. average of 60%. High high-school completion lines up with higher turnout, and about 96% of adults in Princeton have completed high school, above 86% of cities. Learn more about the findings and methodology on the political spectrum map.

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.