729,505 people (2024 Census estimate, +1.9% since 2020)
503 square miles of land · 1,449 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.
3 active community water systems list Davidson County in the area they serve, reporting 939,924 people served in all (a system that crosses county lines counts its whole population).
| METRO WATER SERVICES surface water · local government · TN0000494 | 789,969 served |
| MADISON SUBURBAN U.D. surface water · local government · TN0000424 | 84,437 served |
| HARPETH VALLEY U.D. surface water · local government · TN0000286 | 65,518 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 2,271 people were held in Davidson County's jail, in Vera's latest figure (2024), or 459 per 100,000 residents ages 15–64. In 2019 it was about 2,857.
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 Davidson County. School taxes are usually the largest part of a property tax bill.
Spent $87.6 million — $81.2 million to run schools, about $13,612 per student, plus $2.8 million on buildings and equipment. Money in: $0 local (mostly property tax), $63.9 million state, $28.9 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 High compared with other U.S. counties. FEMA estimates natural hazards cost Davidson County about $262.4 million a year on average in buildings, crops and lives. Ability to bounce back (community resilience): Relatively Moderate; social vulnerability: Relatively Moderate.
Source: FEMA National Risk Index (December 2025), expected annual loss. Ratings compare counties nationwide; they're estimates, not predictions.
833 bridges in Davidson County: 408 in good condition, 387 fair, and 38 poor (4.6%). “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 MILL CREEK · built 1958 | 155,629 vehicles a day |
| I40 over I24 · built 1960 | 154,055 vehicles a day |
| I40 over MILL CREEK · built 1963 | 131,122 vehicles a day |
| I-24 WB RAMP over I-24 EB · built 1961 | 113,584 vehicles a day |
| I65 343316H over CUMBERLAND RV & COWAN ST · built 1967 | 101,986 vehicles a day |
| I40 over I40 / WESTBORO ROAD · built 1962 | 97,513 vehicles a day |
Source: Federal Highway Administration, National Bridge Inventory (2025 submission). Includes state, county and city bridges.
Federal grants paid for $2.4 billion of work in Davidson County in fiscal 2025, about $3,391 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 Davidson 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 Davidson County built: brayden.ozark@gmail.com.
More of Tennessee: the state government and every county in Tennessee.
Nearby counties: Cheatham County (19 mi) · Williamson County (20 mi) · Robertson County (25 mi) · Wilson County (28 mi) · Sumner County (28 mi) · Rutherford County (30 mi).