37,847 people (2024 Census estimate, +9.8% since 2020)
375 square miles of land · 101 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.
3 active community water systems list Marshall County in the area they serve, reporting 41,252 people served in all (a system that crosses county lines counts its whole population).
| LEWISBURG WATER SYSTEM surface water · local government · TN0000400 | 24,569 served |
| MARSHALL CO B.P.U. #1 buys surface water · local government · TN0000105 | 13,257 served |
| CHAPEL HILL WATER SYSTEM buys surface water · local government · TN0000104 | 3,426 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 116 people were held in Marshall County's jail, in Vera's latest figure (2024), or 490 per 100,000 residents ages 15–64. In 2019 it was about 151.
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.
1 school district has its office in Marshall County. School taxes are usually the largest part of a property tax bill.
Spent $62.6 million — $55.7 million to run schools, about $10,312 per student, plus $5.9 million on buildings and equipment. Money in: $18.5 million local (mostly property tax), $32.4 million state, $10.7 million federal. Long-term debt: $19.8 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 $19.7 million a year on average in buildings, crops and lives. Ability to bounce back (community resilience): Relatively Low; social vulnerability: Very Low.
Source: FEMA National Risk Index (December 2025), expected annual loss. Ratings compare counties nationwide; they're estimates, not predictions.
240 bridges in Marshall County: 134 in good condition, 106 fair, and 0 poor (0.0%). “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.
Source: Federal Highway Administration, National Bridge Inventory (2025 submission). Includes state, county and city bridges.
Federal grants paid for $-4,505,879 of work in Marshall County in fiscal 2025, about $-131 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.
General election: Tuesday, November 3, 2026. Last day to register to vote: 2026-10-05. Early voting: 2026-10-14 to 2026-10-29. Mail ballot request deadline: 2026-10-24. Election Day: 2026-11-03.
Source: Tennessee Secretary of State: elections calendar · Tennessee Secretary of State: registration deadline FAQ · Tennessee Secretary of State: GoVoteTN
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 Tennessee: the state government and every county in Tennessee.
Nearby counties: Bedford County (18 mi) · Maury County (20 mi) · Giles County (24 mi) · Lincoln County (24 mi) · Moore County (26 mi) · Williamson County (30 mi).