29,826 people (2024 Census estimate, +3.2% since 2020)
502 square miles of land · 59 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.
7 active community water systems list Marion County in the area they serve, reporting 28,137 people served in all (a system that crosses county lines counts its whole population).
| JASPER WATER DEPT surface water · local government · TN0000325 | 9,779 served |
| TN AMERICAN SEQUATCHIE VALLEY surface water · private · TN0000749 | 8,001 served |
| SOUTH PITTSBURG WATER SYSTEM surface water · local government · TN0000651 | 7,276 served |
| JASPER HIGHLANDS WATER SYSTEM buys surface water · private · TN0008286 | 1,280 served |
| GRIFFITH CREEK U.D. buys surface water · local government · TN0000278 | 1,104 served |
| SUCK CREEK WATER SYSTEM groundwater · local government · TN0000909 | 645 served |
| RIVER LANDING CONDOMINIUM ASSOC groundwater (surface-influenced) · private · TN0000924 | 52 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 129 people were held in Marion County's jail, in Vera's latest figure (2024), or 710 per 100,000 residents ages 15–64. In 2019 it was about 130.
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 Marion County. School taxes are usually the largest part of a property tax bill.
Spent $49.1 million — $41.5 million to run schools, about $10,468 per student, plus $6.1 million on buildings and equipment. Money in: $15.4 million local (mostly property tax), $24.1 million state, $10.4 million federal. Long-term debt: $37 million.
Spent $2.9 million — $2.4 million to run schools, about $13,335 per student, plus $394,000 on buildings and equipment. Money in: $731,000 local (mostly property tax), $1.5 million state, $673,000 federal. Long-term debt: $3.4 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 Marion County about $16.4 million a year on average in buildings, crops and lives. Ability to bounce back (community resilience): Relatively Low; social vulnerability: Relatively High.
Source: FEMA National Risk Index (December 2025), expected annual loss. Ratings compare counties nationwide; they're estimates, not predictions.
177 bridges in Marion County: 83 in good condition, 88 fair, and 6 poor (3.4%). “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.
| I24 over SEQUATCHIE RIVER · built 1965 | 52,102 vehicles a day |
| I24 over SEQUATCHIE RIVER · built 1965 | 52,102 vehicles a day |
| FAP 15 over SR-15 / I-24 · built 1959 | 5,811 vehicles a day |
| FAP 15 over SR-15 / I-24 · built 1959 | 5,811 vehicles a day |
| NFA A444 over POPLAR SPRINGS BRANCH · built 1940 | 1,690 vehicles a day |
| NFA 2153 (SA 5801) over DRY CREEK · built 1979 | 93 vehicles a day |
Source: Federal Highway Administration, National Bridge Inventory (2025 submission). Includes state, county and city bridges.
Federal grants paid for $43.9 million of work in Marion County in fiscal 2025, about $1,524 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 Marion 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 Marion County built: brayden.ozark@gmail.com.
More of Tennessee: the state government and every county in Tennessee.
Nearby counties: Grundy County (19 mi) · Dade County, GA (20 mi) · Sequatchie County (20 mi) · Hamilton County (23 mi) · Franklin County (28 mi) · Catoosa County, GA (31 mi).