83312 is a Republican stronghold. About 8% of voters here vote Democratic and 92% Republican.
About 50% of adults in 83312 typically vote, below the U.S. average of about 62%. Among adults in 83312, ~4% vote Democratic, ~46% Republican, and ~50% don't vote. The map below shows estimated turnout by block group.
How 83312 compares
83312 runs about 49 points more Republican than Idaho as a whole.
Why 83312 leans the way it does
This analysis examined 14,881 data points per zip code to find what predicts political lean and turnout. The items below are a few correlations that stood out for 83312, not a ranked or complete list of what matters most.
Areas with many family households vote Republican. About 80% of households in 83312 are family households, about 13 points above the U.S. average of 67%. Rural areas vote Republican, and 83312 sits in the bottom quarter on density (about 2%, below 97% of zip codes).
Walkability and Republican lean
Places with a low walkability score tend to lean Republican; 83312, ID sits in the bottom quarter nationally on this measure. A walkable street grid does not change how people vote; it mostly reflects how urban a place is.
Why turnout in 83312 looks the way it does
Areas with limited routine healthcare access turn out at lower rates. 83312 is in the bottom quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. Crowded housing lines up with lower turnout, and about 14% of homes in 83312 have more than one occupant per room, above 98% of zip codes. Low high-school completion lines up with lower turnout, and about 97% of adults in 83312 have completed high school, above 91% of zip codes. Learn more about the findings and methodology on the political spectrum map.
Nearby Zip Codes
Zip Codes with Similar Populations
Sources and methodology
Precinct-level voting records used to fit the model come from Idaho 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.