99731 leans Republican by roughly 28 points: about 36% of voters vote Democratic and 64% Republican. These figures are model estimates: Alaska did not have precinct-level voting records available for training, so the numbers above come from demographic and health features rather than local ground truth.
About 73% of adults in 99731 typically vote, above the U.S. average of about 62%. Among adults in 99731, ~26% vote Democratic, ~47% Republican, and ~27% don't vote. The map below shows estimated turnout by block group.
How 99731 compares
99731 runs about 16 points more Republican than Alaska as a whole.
Why 99731 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 99731, not a ranked or complete list of what matters most.
Areas with low college attainment vote Republican. About 6% of adults in 99731 hold a bachelor's degree, about 14 points below the Alaska average of 20%.
Population density and Republican lean
Places with low population density tend to lean Republican; 99731, AK sits in the bottom tenth nationally on this measure.
Why turnout in 99731 looks the way it does
Areas with high high-school completion turn out at higher rates. More than 99% of adults in 99731 have completed high school, about 11 points above the Alaska average of 89%. 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 Alaska Division 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. AK did not have precinct-level voting records available for training, so the figures here come from extrapolation across demographic, health, and land-use features rather than local ground truth. Full methodology and findings: political spectrum map.
Methodology reviewed by the BestNeighborhood data team. Last updated May 2026.