Diamondhead leans heavily Republican by roughly 46 points: about 27% of voters vote Democratic and 73% Republican.
About 82% of adults in Diamondhead typically vote, above the U.S. average of about 62%. Among adults in Diamondhead, ~22% vote Democratic, ~60% Republican, and ~18% don't vote. The map below shows estimated turnout by block group.
How Diamondhead compares
Among cities within 25 miles, Diamondhead leans more Republican than 7 of 23 neighbors.
Diamondhead runs about 23 points more Republican than Mississippi as a whole.
Politics vary noticeably by neighborhood within Diamondhead. The southwest side is the most Republican-leaning (R+58) and the south side is the least Republican-leaning (R+42), a spread of about 16 points.
Why Diamondhead 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 Diamondhead, not a ranked or complete list of what matters most.
Diamondhead votes Republican even though it is densely developed (about 62%, far above the Mississippi average of 15%). Here an older population outweighs the Democratic lean that density usually predicts.
Park access and Republican lean
Places with low park coverage tend to lean Republican; Diamondhead, MS sits in the bottom quarter nationally on this measure. Park access does not change how people vote; it tends to track denser, higher-income areas.
Why turnout in Diamondhead looks the way it does
Areas with strong routine healthcare access turn out at higher rates. Diamondhead 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 14%, about 46 points below the U.S. average of 60%. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Fenton, MS R+71
- Kiln, MS R+76
- Bay St. Louis, MS R+38
- Pass Christian, MS R+42
- Waveland, MS R+41
- Dedeaux, MS R+82
- Long Beach, MS R+39
- Lakeshore, MS R+63
- Crane Creek, MS R+81
Cities with Similar Populations
- Wareham Center, MA Even
- Grants, NM R+9
- White Horse, NJ D+3
- Wauseon, OH R+42
- Sauk Village, IL D+59
- Pleasant Valley, NY R+7
- Wright City, MO R+46
- Lincoln University, PA Even
- Cheat Lake, WV R+7
- Ilion, NY R+22
All Local Stats
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Sources and methodology
Precinct-level voting records used to fit the model come from Mississippi Secretary of State, 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.