King William County, VA Political Map | Democrat & Republican Areas in King William County

By the BestNeighborhood data science team. Last updated May 2026.

King William County leans heavily Republican by roughly 38 points: about 31% of voters vote Democratic and 69% Republican.

 

About 85% of adults in King William County typically vote, above the U.S. average of about 62%. Among adults in King William County, ~26% vote Democratic, ~59% Republican, and ~15% don't vote. The map below shows estimated turnout by block group.

How King William County compares

Among counties within 50 miles, King William County leans more Republican than 29 of 31 neighbors.

King William County runs about 44 points more Republican than Virginia as a whole. Virginia leans Democratic overall, while King William County is one of the few Republican-leaning pockets.

Politics vary noticeably by city within King William County. The east side is the most Republican-leaning (R+45) and the southeast side is the least Republican-leaning (R+27), a spread of about 18 points.

Why King William 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 King William County, not a ranked or complete list of what matters most.

King William County votes against the grain of Virginia. Virginia leans Democratic overall, while King William County runs about 44 points more Republican. Rural areas vote Republican, and King William County sits in the bottom quarter on density (about 12%, below 79% of counties). A high family-household share predicts Republican voting, and about 74% of households in King William County are family households, above 93% of counties.

Cancer-screening access and voter turnout

Places with high colon-cancer-screening access tend to turn out at a higher rate; King William County, VA sits in the top tenth nationally on this measure. Cancer screening does not drive turnout; it reflects income, insurance, and healthcare access.

Why turnout in King William County looks the way it does

Areas with strong routine healthcare access turn out at higher rates. King William County 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 67%, about 7 points above the U.S. average of 60%. Homeowners vote more often than renters, and about 90% of households in King William County own their home, in the top fraction of counties. Learn more about the findings and methodology on the political spectrum map.

All Local Stats

Home Services

Sources and methodology

Precinct-level voting records used to fit the model come from Virginia Department 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.