52,330 people (2024 Census estimate, +0.7% since 2020)
1,148 square miles of land · 46 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.
28 active community water systems list Grant County in the area they serve, reporting 34,199 people served in all (a system that crosses county lines counts its whole population).
| PLATTEVILLE WATERWORKS groundwater · local government · WI1220115 | 12,268 served |
| LANCASTER WATERWORKS groundwater · local government · WI1220107 | 3,907 served |
| BOSCOBEL WATERWORKS groundwater · local government · WI1220089 | 3,237 served |
| FENNIMORE WATERWORKS groundwater · local government · WI1220096 | 2,507 served |
| CUBA CITY WATERWORKS groundwater · local government · WI1220092 | 2,141 served |
| MUSCODA WATERWORKS groundwater · local government · WI1220112 | 1,453 served |
| HAZEL GREEN WATERWORKS groundwater · local government · WI1220102 | 1,193 served |
| DICKEYVILLE WATERWORKS groundwater · local government · WI1220094 | 1,069 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 46 people were held in Grant County's jail, in Vera's latest figure (2025). In 2020 it was about 39.
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.
10 school districts have their office in Grant County. School taxes are usually the largest part of a property tax bill.
Spent $28.5 million — $21.6 million to run schools, about $13,675 per student, plus $4.8 million on buildings and equipment. Money in: $11.6 million local (mostly property tax), $14.4 million state, $2.9 million federal. Long-term debt: $8.2 million.
Spent $16.8 million — $15.6 million to run schools, about $15,788 per student, plus $281,000 on buildings and equipment. Money in: $4 million local (mostly property tax), $10.5 million state, $2.5 million federal.
Spent $13.9 million — $11.9 million to run schools, about $14,656 per student, plus $1.4 million on buildings and equipment. Money in: $4.1 million local (mostly property tax), $8.6 million state, $2.6 million federal. Long-term debt: $2.4 million.
Spent $15.7 million — $14 million to run schools, about $19,899 per student, plus $335,000 on buildings and equipment. Money in: $3.2 million local (mostly property tax), $8.9 million state, $2.6 million federal.
Spent $14 million — $10.4 million to run schools, about $15,353 per student, plus $2.4 million on buildings and equipment. Money in: $7.2 million local (mostly property tax), $6.9 million state, $1.7 million federal. Long-term debt: $6.3 million.
Spent $16.5 million — $10.5 million to run schools, about $16,052 per student, plus $4.9 million on buildings and equipment. Money in: $3.7 million local (mostly property tax), $7.6 million state, $1.8 million federal. Long-term debt: $9.3 million.
Spent $11 million — $7.7 million to run schools, about $14,554 per student, plus $1.4 million on buildings and equipment. Money in: $4.4 million local (mostly property tax), $6.1 million state, $1.5 million federal. Long-term debt: $12.3 million.
Spent $10.1 million — $8.6 million to run schools, about $16,365 per student, plus $566,000 on buildings and equipment. Money in: $3 million local (mostly property tax), $6.5 million state, $1.6 million federal. Long-term debt: $10.4 million.
And 2 more.
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 Grant County about $20.9 million a year on average in buildings, crops and lives. Ability to bounce back (community resilience): Relatively High; social vulnerability: Relatively Moderate.
Source: FEMA National Risk Index (December 2025), expected annual loss. Ratings compare counties nationwide; they're estimates, not predictions.
381 bridges in Grant County: 253 in good condition, 112 fair, and 16 poor (4.2%). “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.
| CTH T over WISCONSIN RIVER 03 · built 1958 | 1,200 vehicles a day |
| CTH A over DRY HOLLOW CREEK · built 1963 | 830 vehicles a day |
| CTH O over PLATTE RIVER · built 1956 | 600 vehicles a day |
| CTH Q over FENNIMORE CREEK · built 1984 | 519 vehicles a day |
| CTH G over BLUE RIVER · built 1950 | 470 vehicles a day |
| CTH N (DEAD END) over BR MCCARTNEY BRANCH · built 1890 | 240 vehicles a day |
Source: Federal Highway Administration, National Bridge Inventory (2025 submission). Includes state, county and city bridges.
Federal grants paid for $20.6 million of work in Grant County in fiscal 2025, about $396 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 Wisconsin 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 Grant 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 Grant County built: brayden.ozark@gmail.com.
More of Wisconsin: the state government and every county in Wisconsin.
Nearby counties: Crawford County (28 mi) · Dubuque County, IA (30 mi) · Iowa County (30 mi) · Clayton County, IA (32 mi) · Lafayette County (32 mi) · Richland County (37 mi).