Milliken leans heavily Republican by roughly 36 points: about 32% of voters vote Democratic and 68% Republican.
About 86% of adults in Milliken typically vote, above the U.S. average of about 62%. Among adults in Milliken, ~28% vote Democratic, ~58% Republican, and ~14% don't vote. The map below shows estimated turnout by block group.
How Milliken compares
Among cities within 25 miles, Milliken leans more Republican than 30 of 47 neighbors.
Milliken runs about 46 points more Republican than Colorado as a whole. Colorado leans Democratic overall, while Milliken is one of the few Republican-leaning pockets.
Politics vary noticeably by neighborhood within Milliken. The northwest side is the most Republican-leaning (R+45) and the east side is the least Republican-leaning (R+33), a spread of about 12 points.
Why Milliken leans the way it does
This analysis examined 14,881 data points per city to find what predicts political lean and turnout. The items below are a few correlations that stood out for Milliken, not a ranked or complete list of what matters most.
Milliken votes Republican even though it is densely developed (about 53%, well above the Colorado average of 35%). State and regional patterns outweigh the Democratic lean that density usually predicts here. A high family-household share predicts Republican voting, and about 83% of households in Milliken are family households, above 94% of cities. Milliken runs against the grain of Colorado, a Republican-leaning pocket in a Democratic-leaning state.
Park access and Republican lean
Places with low park coverage tend to lean Republican; Milliken, CO sits in the bottom quarter nationally on this measure. Park access does not change how people vote; it tends to track denser, higher-income areas.
Why turnout in Milliken looks the way it does
Homeowners vote more often than renters. About 91% of households in Milliken own their home, about 16 points above the Colorado average of 75%. Limited routine healthcare access lines up with lower turnout, and Milliken sits in the bottom quarter on routine-care measures. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Johnstown, CO R+32
- Gilcrest, CO R+56
- Peckham, CO R+57
- Kahler, CO R+31
- Evans, CO R+12
- Platteville, CO R+35
- La Salle, CO R+47
- Greeley, CO R+5
- Welty, CO R+39
- Garden City, CO D+7
Cities with Similar Populations
- Greenville, IL R+28
- Mayo, MD R+11
- Silver Springs, FL R+47
- Ladue, MO D+7
- Yarmouth, ME D+35
- Mecca, CA D+26
- Dagsboro, DE R+22
- La Junta, CO R+13
- Harrington, DE R+26
- Roanoke, AL R+37
All Local Stats
Home Services
Sources and methodology
Precinct-level voting records used to fit the model come from Colorado 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.