Jackson County leans heavily Republican by roughly 42 points: about 29% of voters vote Democratic and 71% Republican.
About 91% of adults in Jackson County typically vote, above the U.S. average of about 62%. Among adults in Jackson County, ~26% vote Democratic, ~65% Republican, and ~9% don't vote. The map below shows estimated turnout by block group.
How Jackson County compares
Jackson County sits in a sparsely populated area with few comparable counties nearby.
Jackson County runs about 53 points more Republican than Colorado as a whole. Colorado leans Democratic overall, while Jackson County is one of the few Republican-leaning pockets.
Why Jackson County leans the way it does
This analysis examined 14,881 data points per county to find what predicts political lean and turnout. The items below are a few correlations that stood out for Jackson County, not a ranked or complete list of what matters most.
Jackson County votes against the grain of Colorado. Colorado leans Democratic overall, while Jackson County runs about 53 points more Republican.
Population density and Republican lean
Places with low population density tend to lean Republican; Jackson County, CO sits below the national average on this measure.
Why turnout in Jackson County looks the way it does
Turnout in Jackson County sits close to the national pattern. Learn more about the findings and methodology on the political spectrum map.
Nearby Counties
- Routt County, CO D+12
- Grand County, CO R+6
- Albany County, WY D+12
- Larimer County, CO D+16
- Moffat County, CO R+52
- Gilpin County, CO D+16
- Boulder County, CO D+52
- Summit County, CO D+23
- Carbon County, WY R+57
- Clear Creek County, CO D+21
Counties with Similar Populations
- Cottle County, TX R+57
- Campbell County, SD R+66
- Sterling County, TX R+80
- Carter County, MT R+78
- Issaquena County, MS R+11
- Edwards County, TX R+42
- Briscoe County, TX R+71
- Piute County, UT R+78
- Throckmorton County, TX R+76
- Sully County, SD R+62
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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.