99643 leans Democratic by roughly 16 points: about 58% of voters vote Democratic and 42% 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 53% of adults in 99643 typically vote, below the U.S. average of about 62%. Among adults in 99643, ~31% vote Democratic, ~22% Republican, and ~47% don't vote. The map below shows estimated turnout by block group.
How 99643 compares
99643 runs about 30 points more Democratic than Alaska as a whole. Alaska leans Republican overall, while 99643 is one of the few Democratic-leaning pockets.
Why 99643 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 99643, not a ranked or complete list of what matters most.
Areas with many never-married adults vote Democratic. About 43% of adults in 99643 have never been married, modestly above similar-sized zip codes (around 28%). 99643 runs against the grain of Alaska, a Democratic-leaning pocket in a Republican-leaning state.
Preventive-care access and voter turnout
Places with limited routine preventive-care access tend to turn out at a lower rate; 99643, AK sits in the bottom quarter nationally on this measure. Dental visits do not drive turnout; the rate reflects income, insurance, and healthcare access, which line up with who votes.
Why turnout in 99643 looks the way it does
Crowded housing lines up with lower turnout. About 13% of homes in 99643 have more than one occupant per room, above 97% of zip codes. Limited routine healthcare access lines up with lower turnout, and 99643 sits in the bottom quarter on routine-care measures. Low high-school completion lines up with lower turnout, and about 84% of adults in 99643 have completed high school, below 84% of zip codes. 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.