100,409 people (2024 Census estimate, +1.6% since 2020)
557 square miles of land · 180 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.
2 active community water systems list Madison County in the area they serve, reporting 91,279 people served in all (a system that crosses county lines counts its whole population).
| JACKSON WATER SYSTEM groundwater · local government · TN0000299 | 91,111 served |
| JEA-MERCER PLANT groundwater · local government · TN0000453 | 168 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 647 people were held in Madison County's jail, in Vera's latest figure (2024), or 1,031 per 100,000 residents ages 15–64. In 2019 it was about 611.
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 Madison County. School taxes are usually the largest part of a property tax bill.
Spent $150.7 million — $138.5 million to run schools, about $11,115 per student, plus $10.7 million on buildings and equipment. Money in: $54.7 million local (mostly property tax), $60 million state, $38.9 million federal. Long-term debt: $18.8 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 Moderate compared with other U.S. counties. FEMA estimates natural hazards cost Madison County about $90.8 million a year on average in buildings, crops and lives. Ability to bounce back (community resilience): Very High; social vulnerability: Relatively High.
Source: FEMA National Risk Index (December 2025), expected annual loss. Ratings compare counties nationwide; they're estimates, not predictions.
418 bridges in Madison County: 134 in good condition, 267 fair, and 17 poor (4.1%). “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.
| FAP 5 over BEAR CREEK · built 1928 | 18,146 vehicles a day |
| FAU 3043 over BRANCH · built 1930 | 9,794 vehicles a day |
| NFA A980 (SA 5710) over OVERFLOW · built 1922 | 2,294 vehicles a day |
| NFA A980 (SA 5710) over OVERFLOW · built 1922 | 2,294 vehicles a day |
| NFA A980 (SA 5710) over OVERFLOW · built 1922 | 2,294 vehicles a day |
| FAS 152 over I40 · built 1960 | 2,127 vehicles a day |
Source: Federal Highway Administration, National Bridge Inventory (2025 submission). Includes state, county and city bridges.
Federal grants paid for $27.8 million of work in Madison County in fiscal 2025, about $281 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 Madison 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 Madison County built: brayden.ozark@gmail.com.
More of Tennessee: the state government and every county in Tennessee.
Nearby counties: Chester County (18 mi) · Crockett County (22 mi) · Henderson County (25 mi) · Haywood County (25 mi) · Gibson County (27 mi) · Hardeman County (28 mi).