46,135 people (2024 Census estimate, +1.5% since 2020)
850 square miles of land · 54 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.
14 active community water systems list Dunn County in the area they serve, reporting 21,223 people served in all (a system that crosses county lines counts its whole population).
| MENOMONIE WATERWORKS groundwater · local government · WI6170268 | 15,950 served |
| COLFAX WATERWORKS groundwater · local government · WI6170261 | 1,102 served |
| BOYCEVILLE WATERWORKS groundwater · local government · WI6170260 | 1,043 served |
| ELK MOUND WATERWORKS groundwater · local government · WI6170264 | 895 served |
| BIRCH TERRACE MOBILE HOME COMMUNITY groundwater · private · WI6170270 | 700 served |
| KNAPP WATERWORKS groundwater · local government · WI6170267 | 486 served |
| WHEELER WATERWORKS ASSOC groundwater · local government · WI6170274 | 317 served |
| DOWNSVILLE SANITARY DISTRICT groundwater · local government · WI6170263 | 250 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 89 people were held in Dunn County's jail, in Vera's latest figure (2025). In 2020 it was about 88.
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.
4 school districts have their office in Dunn County. School taxes are usually the largest part of a property tax bill.
Spent $50.8 million — $44.4 million to run schools, about $13,500 per student, plus $2.9 million on buildings and equipment. Money in: $15.5 million local (mostly property tax), $32.5 million state, $6.5 million federal. Long-term debt: $25.2 million.
Spent $21.3 million — $15.1 million to run schools, about $12,464 per student, plus $4.8 million on buildings and equipment. Money in: $5.8 million local (mostly property tax), $11.2 million state, $2.4 million federal. Long-term debt: $17.6 million.
Spent $11.9 million — $9.7 million to run schools, about $13,341 per student, plus $860,000 on buildings and equipment. Money in: $3.4 million local (mostly property tax), $7.7 million state, $1.4 million federal. Long-term debt: $6.1 million.
Spent $11.7 million — $10.2 million to run schools, about $14,672 per student, plus $221,000 on buildings and equipment. Money in: $3.9 million local (mostly property tax), $8 million state, $1.3 million federal. Long-term debt: $3.8 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 Low compared with other U.S. counties. FEMA estimates natural hazards cost Dunn County about $22.2 million a year on average in buildings, crops and lives. Ability to bounce back (community resilience): Relatively Moderate; social vulnerability: Very Low.
Source: FEMA National Risk Index (December 2025), expected annual loss. Ratings compare counties nationwide; they're estimates, not predictions.
244 bridges in Dunn County: 73 in good condition, 151 fair, and 20 poor (8.2%). “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.
| IH 94 over E BR WILSON CREEK · built 1959 | 35,500 vehicles a day |
| USH 12 over WILSON CREEK · built 1934 | 2,900 vehicles a day |
| STH 85 over BR CHIPPEWA RIVER · built 1992 | 2,800 vehicles a day |
| CTH BB over TAINTER LAKE · built 1935 | 2,234 vehicles a day |
| CTH D over RED CEDAR RIVER · built 1975 | 1,503 vehicles a day |
| CTH V over SAND CREEK · built 1934 | 702 vehicles a day |
Source: Federal Highway Administration, National Bridge Inventory (2025 submission). Includes state, county and city bridges.
Federal grants paid for $6.8 million of work in Dunn County in fiscal 2025, about $150 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 Dunn 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 Dunn County built: brayden.ozark@gmail.com.
More of Wisconsin: the state government and every county in Wisconsin.
Nearby counties: Pepin County (22 mi) · St. Croix County (27 mi) · Pierce County (30 mi) · Chippewa County (31 mi) · Eau Claire County (34 mi) · Barron County (34 mi).