1,581,426 people (2024 Census estimate, +7.8% since 2020)
1,023 square miles of land · 1,547 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.
186 active community water systems list Hillsborough County in the area they serve, reporting 1,651,821 people served in all (a system that crosses county lines counts its whole population).
| CITY OF TAMPA WATER DEPARTMENT surface water · local government · FL6290327 | 733,886 served |
| HCWRD/SOUTH-CENTRAL buys surface water · local government · FL6290787 | 515,012 served |
| HCWRC/NORTHWEST UTILITIES buys surface water · local government · FL6290388 | 208,982 served |
| UNIVERSITY OF SOUTH FLORIDA groundwater · state · FL6291882 | 47,586 served |
| CITY OF PLANT CITY UTILITY groundwater · local government · FL6290323 | 41,601 served |
| CITY OF TEMPLE TERRACE UTILITY groundwater · local government · FL6291791 | 31,250 served |
| HCWRD/SEABOARD UTILITIES buys surface water · local government · FL6290333 | 13,958 served |
| FGUA / MACDILL buys surface water · public/private · FL6296193 | 11,965 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 3,596 people were held in Hillsborough County's jail, in Vera's latest figure (2026). In 2021 it was about 2,749.
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 Hillsborough County. School taxes are usually the largest part of a property tax bill.
Spent $2.9 billion — $2.4 billion to run schools, about $10,589 per student, plus $451.8 million on buildings and equipment. Money in: $1.3 billion local (mostly property tax), $1.2 billion state, $553.8 million federal. Long-term debt: $646.7 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 High compared with other U.S. counties. FEMA estimates natural hazards cost Hillsborough County about $494.6 million a year on average in buildings, crops and lives. Ability to bounce back (community resilience): Relatively Low; social vulnerability: Relatively Low.
Source: FEMA National Risk Index (December 2025), expected annual loss. Ratings compare counties nationwide; they're estimates, not predictions.
845 bridges in Hillsborough County: 576 in good condition, 266 fair, and 3 poor (0.4%). “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.
| BAYSHORE BLVD. over CRAYFISH CANAL · built 1982 | 6,600 vehicles a day |
| NEWBERGER ROAD over KELL CREEK · built 1947 | 740 vehicles a day |
| PHILLIPS LANE over KITCHEN BRANCH · built 1974 | 230 vehicles a day |
Source: Federal Highway Administration, National Bridge Inventory (2025 submission). Includes state, county and city bridges.
Federal grants paid for $1 billion of work in Hillsborough County in fiscal 2025, about $685 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. Vote-by-mail request due by 5 pm: 2026-10-22. Early voting — the statewide minimum: 2026-10-24 to 2026-10-31. Election Day — and mail ballots must arrive: 2026-11-03.
Source: Florida Division of Elections — election dates · WPTV, 2026 deadlines · Florida Division of Elections — early voting
The budget, property tax rates, audits, local officials and offices for Hillsborough 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 Hillsborough County built: brayden.ozark@gmail.com.
More of Florida: the state government and every county in Florida.
Nearby counties: Pinellas County (26 mi) · Manatee County (29 mi) · Pasco County (30 mi) · Polk County (42 mi) · Hardee County (44 mi) · Sarasota County (46 mi).