Millbrook leans slightly Democratic by roughly 14 points: about 57% of voters vote Democratic and 43% Republican.
About 78% of adults in Millbrook typically vote, above the U.S. average of about 62%. Among adults in Millbrook, ~44% vote Democratic, ~34% Republican, and ~22% don't vote. The map below shows estimated turnout by block group.
How Millbrook compares
Among cities within 25 miles, Millbrook leans more Democratic than 58 of 83 neighbors.
Politically, Millbrook sits close to the rest of New York.
Politics vary noticeably by neighborhood within Millbrook. The west side is the most Democratic-leaning (D+20) and the southwest side is the least Democratic-leaning (D+4), a spread of about 16 points.
Why Millbrook 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 Millbrook, not a ranked or complete list of what matters most.
Areas with high college attainment vote Democratic. About 49% of adults in Millbrook hold a bachelor's degree, about 21 points above the U.S. average of 28%. Density combined with diversity predicts Democratic voting, and non-Hispanic white share in Millbrook is about 80%, below 65% of cities. A high never-married share predicts Democratic voting, and about 32% of adults in Millbrook have never been married, above 80% of cities.
Walkability and Democratic lean
Places with a highly walkable street grid tend to lean Democratic; Millbrook, NY sits in the top quarter nationally on this measure. A walkable street grid does not change how people vote; it mostly reflects how urban a place is.
Why turnout in Millbrook looks the way it does
Areas with strong routine healthcare access turn out at higher rates. Millbrook 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 about 96% of adults in Millbrook have completed high school, above 81% of cities. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Mabbettsville, NY D+19
- Bangall, NY Even
- Verbank, NY R+17
- Salt Point, NY R+9
- Dover Plains, NY R+15
- Clinton Corners, NY D+6
- Wassaic, NY R+6
- Pleasant Valley, NY R+7
- Stanfordville, NY Even
- Amenia, NY Even
Cities with Similar Populations
- Woodsfield, OH R+60
- Fyffe, AL R+80
- West Paducah, KY R+57
- Gaines, MI R+33
- Lake Park, NC R+14
- Nome, AK D+8
- Rochester, WI R+29
- Algood, TN R+51
- Marienville, PA R+5
- Richfield, WI R+37
All Local Stats
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Sources and methodology
Precinct-level voting records used to fit the model come from New York State Board of 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.