83650 is a Republican stronghold. About 13% of voters here vote Democratic and 87% Republican.
About 42% of adults in 83650 typically vote, below the U.S. average of about 62%. Among adults in 83650, ~6% vote Democratic, ~36% Republican, and ~58% don't vote. The map below shows estimated turnout by block group.
How 83650 compares
83650 runs about 37 points more Republican than Idaho as a whole.
Politics vary noticeably by block within 83650. The northeast side is the most Republican-leaning (R+75) and the southwest side is the least Republican-leaning (R+60), a spread of about 15 points.
Why 83650 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 83650, not a ranked or complete list of what matters most.
Rural areas vote Republican. Fewer than 1% of residents in 83650 live in densely developed areas, about 17 points below the Idaho average of 18%. Low college attainment predicts Republican voting, and 83650 sits in the bottom quarter (about 14%, below 83% of zip codes). A high family-household share predicts Republican voting, and about 75% of households in 83650 are family households, above 79% of zip codes.
Walkability and Republican lean
Places with a low walkability score tend to lean Republican; 83650, ID sits in the bottom tenth 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 83650 looks the way it does
Areas with limited routine healthcare access turn out at lower rates. 83650 is in the bottom quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. High food insecurity lines up with lower turnout, and about 20% of adults in 83650 report food insecurity, above 80% 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.