114,247 people (2024 Census estimate, +4.6% since 2020)
714 square miles of land · 160 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.
16 active community water systems list Madison County in the area they serve, reporting 129,794 people served in all (a system that crosses county lines counts its whole population).
| BEAR CREEK W/A-WEST groundwater · public/private · MS0450021 | 26,677 served |
| CITY OF RIDGELAND groundwater · local government · MS0450013 | 24,340 served |
| BEAR CREEK W/A -EAST groundwater · public/private · MS0450002 | 18,770 served |
| CITY OF CANTON groundwater · local government · MS0450006 | 16,785 served |
| CITY OF MADISON groundwater · local government · MS0450010 | 16,136 served |
| CMU - LAKE CAROLINE groundwater · local government · MS0450034 | 8,511 served |
| EAST MADISON WATER ASSN-WEST groundwater · public/private · MS0450007 | 7,339 served |
| PRVWSD-TWIN HARBOR groundwater · state · MS0450024 | 2,973 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 270 people were held in Madison County's jail, in Vera's latest figure (2023), or 371 per 100,000 residents ages 15–64. In 2018 it was about 435.
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 Madison County. School taxes are usually the largest part of a property tax bill.
Spent $181 million — $161.2 million to run schools, about $12,248 per student, plus $18.8 million on buildings and equipment. Money in: $93.6 million local (mostly property tax), $78.8 million state, $17.9 million federal. Long-term debt: $21.8 million.
Spent $47.5 million — $39.2 million to run schools, about $12,389 per student, plus $6.7 million on buildings and equipment. Money in: $20.2 million local (mostly property tax), $17.9 million state, $15.7 million federal. Long-term debt: $34.9 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 $54.3 million a year on average in buildings, crops and lives. Ability to bounce back (community resilience): Very High; social vulnerability: Relatively Low.
Source: FEMA National Risk Index (December 2025), expected annual loss. Ratings compare counties nationwide; they're estimates, not predictions.
311 bridges in Madison County: 161 in good condition, 140 fair, and 10 poor (3.2%). “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 51 over TILDA BOGUE CREEK · built 1929 | 1,900 vehicles a day |
| US 51 over RELIEF · built 1934 | 780 vehicles a day |
| US 51 over DOAKS CREEK · built 1935 | 780 vehicles a day |
| OLD HWY 16 over LOTVILLE CREEK · built 1961 | 240 vehicles a day |
| GLUCKSTADT ROAD over BEAR CREEK · built 1963 | 150 vehicles a day |
| MOUNT PILGRIM ROAD over BRANCH · built 1988 | 120 vehicles a day |
Source: Federal Highway Administration, National Bridge Inventory (2025 submission). Includes state, county and city bridges.
Federal grants paid for $182.1 million of work in Madison County in fiscal 2025, about $1,668 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 Mississippi 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 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 Mississippi: the state government and every county in Mississippi.
Nearby counties: Yazoo County (22 mi) · Rankin County (26 mi) · Leake County (31 mi) · Scott County (33 mi) · Holmes County (34 mi) · Hinds County (36 mi).