Copiah County leans slightly Democratic by roughly 6 points: about 53% of voters vote Democratic and 47% Republican.
About 65% of adults in Copiah County typically vote, near the U.S. average of about 62%. Among adults in Copiah County, ~34% vote Democratic, ~31% Republican, and ~35% don't vote. The map below shows estimated turnout by block group.
How Copiah County compares
Among counties within 50 miles, Copiah County leans more Democratic than 7 of 12 neighbors.
Copiah County runs about 29 points more Democratic than Mississippi as a whole. Mississippi leans Republican overall, while Copiah County is one of the few Democratic-leaning pockets.
Politics vary noticeably by city within Copiah County. The north side runs the most Democratic (D+16) and the southeast side runs the most Republican (R+63), a spread of about 79 points.
Why Copiah 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 Copiah County, not a ranked or complete list of what matters most.
Areas with many never-married adults vote Democratic. About 37% of adults in Copiah County have never been married, modestly above similar-sized counties (around 31%). Copiah County runs against the grain of Mississippi, 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; Copiah County, MS sits in the bottom tenth 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 Copiah County looks the way it does
Turnout in Copiah County sits close to the national pattern. Routine healthcare access, homeownership, education, and food security all land near their national averages here. Learn more about the findings and methodology on the political spectrum map.
Nearby Counties
- Lincoln County, MS R+37
- Lawrence County, MS R+30
- Hinds County, MS D+52
- Simpson County, MS R+29
- Claiborne County, MS D+61
- Rankin County, MS R+42
- Jefferson Davis County, MS D+6
- Warren County, MS D+6
- Franklin County, MS R+35
- Jefferson County, MS D+63
Counties with Similar Populations
- Jones County, GA R+41
- Leflore County, MS D+53
- Palo Pinto County, TX R+62
- Codington County, SD R+42
- Lincoln County, WI R+29
- Bradford County, FL R+50
- Sanpete County, UT R+63
- Carroll County, TN R+58
- Dillon County, SC R+5
- Wythe County, VA R+57
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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.