27109 leans heavily Democratic by roughly 48 points: about 74% of voters vote Democratic and 26% Republican.
About 54% of adults in 27109 typically vote, below the U.S. average of about 62%. Among adults in 27109, ~40% vote Democratic, ~14% Republican, and ~46% don't vote. The map below shows estimated turnout by block group.
How 27109 compares
Among zip codes within 15 miles, 27109 leans more Democratic than 18 of 21 neighbors.
27109 runs about 52 points more Democratic than North Carolina as a whole. North Carolina leans Republican overall, while 27109 is one of the few Democratic-leaning pockets.
Politics vary noticeably by block within 27109. The east side is the most Democratic-leaning (D+49) and the south side is the least Democratic-leaning (D+31), a spread of about 19 points.
Why 27109 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 27109, not a ranked or complete list of what matters most.
Areas with high college attainment vote Democratic. About 76% of adults in 27109 hold a bachelor's degree, about 47 points above the U.S. average of 28%. Dense areas vote Democratic, and 27109 sits in the top fifth on density (about 94%, above 90% of zip codes). 27109 runs against the grain of North Carolina, a Democratic-leaning pocket in a Republican-leaning state.
Never-married share, developed land, and voter turnout
Places that combine a never-married-heavy adult population and a heavily developed built environment tend to turn out at a lower rate, as 27109, NC does.
Why turnout in 27109 looks the way it does
Renters vote less often than owners. About 49% of households in 27109 rent, about 24 points above the U.S. average of 25%. Low high-school completion lines up with lower turnout, and more than 99% of adults in 27109 have completed high school, in the top fraction of zip codes. High-crime urban areas turn out at lower rates, and 27109 sits in the top 15% on a violent-crime measure. 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 Carolina 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.