58330 leans heavily Republican by roughly 40 points: about 30% of voters vote Democratic and 70% Republican.
About 67% of adults in 58330 typically vote, near the U.S. average of about 62%. Among adults in 58330, ~20% vote Democratic, ~47% Republican, and ~33% don't vote. The map below shows estimated turnout by block group.
How 58330 compares
Among zip codes within 15 miles, 58330 is the least Republican-leaning.
Politically, 58330 sits close to the rest of North Dakota.
Why 58330 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 58330, not a ranked or complete list of what matters most.
Rural areas vote Republican. About 3% of residents in 58330 live in densely developed areas, about 9 points below the North Dakota average of 12%.
Population density and Republican lean
Places with low population density tend to lean Republican; 58330, ND sits in the bottom tenth nationally on this measure.
Why turnout in 58330 looks the way it does
Areas with strong routine healthcare access turn out at higher rates. 58330 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 70%, about 10 points above the U.S. average of 60%. 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 North Dakota 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.