83633 is a Republican stronghold. About 22% of voters here vote Democratic and 78% Republican.
About 57% of adults in 83633 typically vote, near the U.S. average of about 62%. Among adults in 83633, ~12% vote Democratic, ~45% Republican, and ~43% don't vote. The map below shows estimated turnout by block group.
How 83633 compares
Among zip codes within 15 miles, 83633 is the least Republican-leaning.
83633 runs about 19 points more Republican than Idaho as a whole.
Why 83633 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 83633, not a ranked or complete list of what matters most.
Rural areas with a high white share vote Republican. 83633 sits in the bottom quarter on density and about 94% of residents are non-Hispanic white, about 12 points above the Idaho average of 83%. A high family-household share predicts Republican voting, and about 80% of households in 83633 are family households, above 92% of zip codes.
Paved land cover and Republican lean
Places with little paved surface tend to lean Republican; 83633, ID sits in the bottom tenth nationally on this measure. Paved ground does not change how people vote; it mostly reflects how urban and built-up a place is.
Why turnout in 83633 looks the way it does
Areas with limited routine healthcare access turn out at lower rates. 83633 is in the bottom quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. High-crime urban areas turn out at lower rates, and 83633 sits in the top 15% on a violent-crime measure. 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.