29,354 people (2024 Census estimate, −3.8% since 2020)
305 square miles of land · 96 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.
9 active community water systems list Marshall County in the area they serve, reporting 28,911 people served in all (a system that crosses county lines counts its whole population).
| MOUNDSVILLE groundwater · local government · WV3302611 | 9,911 served |
| MARSHALL COUNTY PSD 4 buys groundwater · local government · WV3302609 | 4,063 served |
| MARSHALL COUNTY PSD 1 buys groundwater · local government · WV3302606 | 3,463 served |
| MARSHALL COUNTY PSD 3 buys groundwater · local government · WV3302608 | 2,694 served |
| GLEN DALE WATER WORKS groundwater · local government · WV3302605 | 2,495 served |
| MCMECHEN MUNICIPAL WATER groundwater · local government · WV3302610 | 2,212 served |
| MARSHALL COUNTY PSD 2 groundwater · local government · WV3302607 | 1,601 served |
| BENWOOD WATER DEPARTMENT groundwater · local government · WV3302618 | 1,510 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 72 people were held in Marshall County's jail, in Vera's latest figure (2024), or 407 per 100,000 residents ages 15–64. In 2019 it was about 73.
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 $90.2 million — $77.4 million to run schools, about $18,263 per student, plus $12.4 million on buildings and equipment. Money in: $71.8 million local (mostly property tax), $14.1 million state, $12.2 million federal.
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 $17.8 million a year on average in buildings, crops and lives. Ability to bounce back (community resilience): Relatively High; social vulnerability: Relatively Moderate.
Source: FEMA National Risk Index (December 2025), expected annual loss. Ratings compare counties nationwide; they're estimates, not predictions.
85 bridges in Marshall County: 28 in good condition, 33 fair, and 24 poor (28.2%). “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.
| US Route 250 over Parrs Run · built 1920 | 22,100 vehicles a day |
| West Virginia 2 over Big Grave Creek · built 1973 | 9,200 vehicles a day |
| US 250 on Ramp H over Vacant Land · built 1968 | 2,000 vehicles a day |
| Elm Avenue over Parrs Run · built 1952 | 1,200 vehicles a day |
| County Route 34 over Toms Run · built 1982 | 1,100 vehicles a day |
| County Route 5 over Grandstaff Run · built 1936 | 850 vehicles a day |
Source: Federal Highway Administration, National Bridge Inventory (2025 submission). Includes state, county and city bridges.
Federal grants paid for $13 million of work in Marshall County in fiscal 2025, about $425 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 West Virginia 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 West Virginia: the state government and every county in West Virginia.
Nearby counties: Ohio County (17 mi) · Wetzel County (18 mi) · Belmont County, OH (19 mi) · Greene County, PA (24 mi) · Monroe County, OH (24 mi) · Tyler County (29 mi).