59001 leans heavily Republican by roughly 44 points: about 28% of voters vote Democratic and 72% Republican.
About more than 99% of adults in 59001 typically vote, above the U.S. average of about 62%. Among adults in 59001, ~29% vote Democratic, ~76% Republican, and ~-5% don't vote. The map below shows estimated turnout by block group.
How 59001 compares
Among zip codes within 15 miles, 59001 leans more Republican than 2 of 4 neighbors.
59001 runs about 24 points more Republican than Montana as a whole.
Politics vary noticeably by block within 59001. The north side is the most Republican-leaning (R+65) and the southwest side is the least Republican-leaning (R+40), a spread of about 25 points.
Why 59001 leans the way it does
Density, race composition, education, and family structure all sit close to their national averages in 59001. The lean here lands roughly where demographic data alone would predict.
High-school completion and voter turnout
Places with high-school-completion-heavy adults tend to turn out at a higher rate; 59001, MT sits in the top tenth nationally on this measure.
Why turnout in 59001 looks the way it does
Areas with strong routine healthcare access turn out at higher rates. 59001 is in the top quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. The dental-visit rate here is about 68%, about 8 points above the U.S. average of 60%. High high-school completion lines up with higher turnout, and more than 99% of adults in 59001 have completed high school, above 98% 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.