34,374 people (2024 Census estimate, +1.7% since 2020)
706 square miles of land · 49 people per square mile
“Highest” and “lowest” are just order, not grades: a high rank for poverty or hazard losses means more of it. Each figure's source is in its section below.
6 active community water systems list Marshall County in the area they serve, reporting 22,950 people served in all (a system that crosses county lines counts its whole population).
| CITY OF HOLLY SPRINGS groundwater · local government · MS0470002 | 9,779 served |
| MARSHALL CO WATER ASSN groundwater · public/private · MS0470105 | 5,599 served |
| TOWN OF BYHALIA groundwater · local government · MS0470001 | 4,446 served |
| BCM WATER ASSOCIATION groundwater · public/private · MS0470106 | 1,898 served |
| TOWN OF POTTS CAMP groundwater · local government · MS0470004 | 1,085 served |
| SOUTH VICTORIA groundwater · private · MS0470069 | 143 served |
Source: U.S. EPA Safe Drinking Water Information System (SDWIS), active community systems, . Look up any system's violations and test results with EPA's search using its ID.
About 70 people were held in Marshall County's jail, in Vera's latest figure (2019), or 318 per 100,000 residents ages 15–64. In 2014 it was about 45.
Source: Vera Institute of Justice, Incarceration Trends (built from federal Bureau of Justice Statistics jail surveys). Counties without their own jail, or that share one, may show no figure.
2 school districts have their office in Marshall County. School taxes are usually the largest part of a property tax bill.
Spent $35.4 million — $31.2 million to run schools, about $11,240 per student, plus $3.7 million on buildings and equipment. Money in: $12.6 million local (mostly property tax), $16.9 million state, $8.7 million federal. Long-term debt: $12.5 million.
Spent $16.7 million — $15.3 million to run schools, about $14,958 per student, plus $1.1 million on buildings and equipment. Money in: $5.8 million local (mostly property tax), $7.2 million state, $4.4 million federal. Long-term debt: $8.6 million.
Source: U.S. Census Bureau, 2023 Annual Survey of School System Finances. Districts are listed by the county of their main office; some serve neighboring counties too.
Source: County Health Rankings & Roadmaps 2025 (University of Wisconsin Population Health Institute), which gathers federal data (CDC, Census, and others); measures cover different recent years. Blank lines aren't reported for small counties.
Overall risk: Relatively Low compared with other U.S. counties. FEMA estimates natural hazards cost Marshall County about $19.4 million a year on average in buildings, crops and lives. Ability to bounce back (community resilience): Very Low; social vulnerability: Very High.
Source: FEMA National Risk Index (December 2025), expected annual loss. Ratings compare counties nationwide; they're estimates, not predictions.
255 bridges in Marshall County: 111 in good condition, 125 fair, and 19 poor (7.5%). “Poor” means a main part — the deck, the beams, or the supports — is rated 4 or lower on the federal 0–9 scale. It doesn't mean unsafe to drive; unsafe bridges are closed.
| SR 178 over VICTORIA CANAL · built 1936 | 2,400 vehicles a day |
| SR 178 over VICTORIA CREEK · built 1936 | 2,400 vehicles a day |
| SR 178 over SPRING CREEK · built 1938 | 1,500 vehicles a day |
| SR 178 over RELIEF · built 1938 | 1,500 vehicles a day |
| SR 178 over SPRING CREEK · built 1938 | 1,500 vehicles a day |
| SR 178 over SPRING CREEK · built 1938 | 1,500 vehicles a day |
Source: Federal Highway Administration, National Bridge Inventory (2025 submission). Includes state, county and city bridges.
Federal grants paid for $77.2 million of work in Marshall County in fiscal 2025, about $2,286 per resident — to the county, cities, schools, hospitals, nonprofits and others.
Source: USAspending.gov, grants by place of performance, fiscal 2025 (Oct. 2024 to Sept. 2025). Search it by county to see each award.
From Grants.gov: posted grants listing county governments as eligible, soonest deadline first; research-only and overseas programs left out; list updated 2026-10-13, refreshed weekly. 62 are open in all. Cities, towns, school districts and nonprofits have their own lists there.
Registration deadlines, early voting and polling places for Mississippi are on the federal site vote.gov, which links to the state's official election office.
The budget, property tax rates, audits, local officials and offices for Marshall County come from the county's own records, which we haven't gathered — not gathered, never hidden. See what a full county site looks like, or ask to have Marshall County built: brayden.ozark@gmail.com.
More of Mississippi: the state government and every county in Mississippi.
Nearby counties: Benton County (17 mi) · Tate County (26 mi) · Lafayette County (29 mi) · DeSoto County (29 mi) · Fayette County, TN (30 mi) · Tippah County (33 mi).