83648 leans slightly Republican by roughly 6 points: about 47% of voters vote Democratic and 53% Republican.
About 32% of adults in 83648 typically vote, below the U.S. average of about 62%. Among adults in 83648, ~15% vote Democratic, ~17% Republican, and ~68% don't vote. The map below shows estimated turnout by block group.
How 83648 compares
83648 sits in a sparsely populated area with few comparable zip codes nearby.
83648 runs about 29 points more Democratic than Idaho as a whole.
Politics vary noticeably by block within 83648. The south side is the most split-leaning (R+70) and the southwest side is the least split-leaning (R+2), a spread of about 68 points.
Why 83648 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 83648, not a ranked or complete list of what matters most.
Areas with many family households vote Republican. About 88% of households in 83648 are family households, about 21 points above the U.S. average of 67%. Dense places usually vote Democratic, but 83648 runs against that pattern.
Homeownership and voter turnout
Places with renter-heavy households tend to turn out at a lower rate; 83648, ID sits in the bottom tenth nationally on this measure.
Why turnout in 83648 looks the way it does
Renters vote less often than owners. More than 99% of households in 83648 rent, about 74 points above the U.S. average of 25%. Limited routine healthcare access lines up with lower turnout, and 83648 sits in the bottom quarter on routine-care measures. Low high-school completion lines up with lower turnout, and more than 99% of adults in 83648 have completed high school, in the top fraction 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.