83802 leans heavily Republican by roughly 50 points: about 25% of voters vote Democratic and 75% Republican.
About 71% of adults in 83802 typically vote, above the U.S. average of about 62%. Among adults in 83802, ~18% vote Democratic, ~53% Republican, and ~29% don't vote. The map below shows estimated turnout by block group.
How 83802 compares
Among zip codes within 15 miles, 83802 leans more Republican than 1 of 3 neighbors.
83802 runs about 20 points more Republican than Idaho as a whole.
Politics vary noticeably by block within 83802. The northeast side is the most Republican-leaning (R+61) and the northwest side is the least Republican-leaning (R+41), a spread of about 20 points.
Why 83802 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 83802, not a ranked or complete list of what matters most.
Rural areas vote Republican. About 2% of residents in 83802 live in densely developed areas, about 16 points below the Idaho average of 18%.
Never-married share, developed land, and voter turnout
Places that combine a low never-married share and a rural land-use pattern tend to turn out at a higher rate, as 83802, ID does.
Why turnout in 83802 looks the way it does
Homeowners vote more often than renters. About 91% of households in 83802 own their home, about 12 points above the Idaho average of 79%. Learn more about the findings and methodology on the political spectrum map.
Nearby Zip Codes
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.