59057 is a Republican stronghold. About 19% of voters here vote Democratic and 81% Republican.
About 74% of adults in 59057 typically vote, above the U.S. average of about 62%. Among adults in 59057, ~14% vote Democratic, ~60% Republican, and ~26% don't vote. The map below shows estimated turnout by block group.
How 59057 compares
Among zip codes within 15 miles, 59057 leans more Republican than 4 of 5 neighbors.
59057 runs about 42 points more Republican than Montana as a whole.
Politics vary noticeably by block within 59057. The west side is the most Republican-leaning (R+76) and the northeast side is the least Republican-leaning (R+57), a spread of about 19 points.
Why 59057 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 59057, not a ranked or complete list of what matters most.
Rural areas vote Republican. About 4% of residents in 59057 live in densely developed areas, about 9 points below the Montana average of 13%. A high family-household share predicts Republican voting, and about 83% of households in 59057 are family households, above 96% of zip codes.
Paved land cover and Republican lean
Places with little paved surface tend to lean Republican; 59057, MT sits in the bottom quarter 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 59057 looks the way it does
Homeowners vote more often than renters. About 94% of households in 59057 own their home, about 17 points above the Montana average of 77%. High high-school completion lines up with higher turnout, and about 98% of adults in 59057 have completed high school, above 94% 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 Montana 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.