8,506 people (2024 Census estimate, +0.7% since 2020)
527 square miles of land · 16 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.
5 active community water systems list Maries County in the area they serve, reporting 3,022 people served in all (a system that crosses county lines counts its whole population).
| BELLE PWS groundwater · local government · MO3010054 | 1,300 served |
| VIENNA PWS groundwater · local government · MO3010822 | 591 served |
| MARIES COUNTY PWSD 1 NORTH groundwater · local government · MO3021138 | 474 served |
| OSAGE COUNTY PWSD 4 groundwater · local government · MO3024440 | 357 served |
| MARIES COUNTY PWSD 1 SOUTH groundwater · local government · MO3021236 | 300 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 11 people were held in Maries County's jail, in Vera's latest figure (2018), or 207 per 100,000 residents ages 15–64. In 2012 it was about 16.
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 Maries County. School taxes are usually the largest part of a property tax bill.
Spent $8.4 million — $7.9 million to run schools, about $10,827 per student, plus $253,000 on buildings and equipment. Money in: $3.9 million local (mostly property tax), $4.2 million state, $1.5 million federal. Long-term debt: $553,000.
Spent $5.9 million — $5.1 million to run schools, about $11,473 per student, plus $549,000 on buildings and equipment. Money in: $3.2 million local (mostly property tax), $2.3 million state, $948,000 federal. Long-term debt: $3.2 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: Very Low compared with other U.S. counties. FEMA estimates natural hazards cost Maries County about $7.5 million a year on average in buildings, crops and lives. Ability to bounce back (community resilience): Relatively Moderate; social vulnerability: Relatively Low.
Source: FEMA National Risk Index (December 2025), expected annual loss. Ratings compare counties nationwide; they're estimates, not predictions.
69 bridges in Maries County: 22 in good condition, 37 fair, and 10 poor (14.5%). “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.
| MO 42 E over FLY CR · built 1962 | 457 vehicles a day |
| MO 42 E over MARIES RVR · built 1963 | 457 vehicles a day |
| MO 42 E over GASCONADE RVR · built 1970 | 455 vehicles a day |
| RT M E over BUCK ELK CR · built 1935 | 371 vehicles a day |
| RT AA S over LITTLE MARIES RVR · built 1966 | 360 vehicles a day |
| RT AA S over MARIES RVR · built 1966 | 360 vehicles a day |
Source: Federal Highway Administration, National Bridge Inventory (2025 submission). Includes state, county and city bridges.
Federal grants paid for $1.5 million of work in Maries County in fiscal 2025, about $183 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 Missouri 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 Maries 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 Maries County built: brayden.ozark@gmail.com.
More of Missouri: the state government and every county in Missouri.
Nearby counties: Osage County (21 mi) · Phelps County (22 mi) · Miller County (28 mi) · Pulaski County (28 mi) · Gasconade County (30 mi) · Cole County (30 mi).