34,801 people (2024 Census estimate, +0.5% since 2020)
1,210 square miles of land · 29 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.
13 active community water systems list Clark County in the area they serve, reporting 10,037 people served in all (a system that crosses county lines counts its whole population).
| NEILLSVILLE WATERWORKS groundwater · local government · WI6100330 | 2,384 served |
| THORP WATERWORKS groundwater · local government · WI6100337 | 1,636 served |
| LOYAL WATERWORKS groundwater · local government · WI6100329 | 1,308 served |
| GREENWOOD WATERWORKS groundwater · local government · WI6100328 | 1,079 served |
| OWEN WATERWORKS groundwater · local government · WI6100334 | 936 served |
| DORCHESTER WATERWORKS groundwater · local government · WI6100326 | 834 served |
| CLARK COUNTY REHABILITATION & LIVING CENTER groundwater · local government · WI6100336 | 510 served |
| WITHEE WATERWORKS groundwater · local government · WI6100283 | 506 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 30 people were held in Clark County's jail, in Vera's latest figure (2025). In 2020 it was about 38.
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.
8 school districts have their office in Clark County. School taxes are usually the largest part of a property tax bill.
Spent $17.1 million — $13.9 million to run schools, about $14,846 per student, plus $658,000 on buildings and equipment. Money in: $4.3 million local (mostly property tax), $11.5 million state, $3.1 million federal. Long-term debt: $3.8 million.
Spent $15.5 million — $11.5 million to run schools, about $13,318 per student, plus $1.7 million on buildings and equipment. Money in: $5 million local (mostly property tax), $8.4 million state, $2.8 million federal.
Spent $16.8 million — $9.2 million to run schools, about $11,484 per student, plus $6.2 million on buildings and equipment. Money in: $3.8 million local (mostly property tax), $9.3 million state, $4.5 million federal. Long-term debt: $4 million.
Spent $10.6 million — $8.8 million to run schools, about $16,357 per student, plus $359,000 on buildings and equipment. Money in: $2.8 million local (mostly property tax), $6.1 million state, $2.4 million federal. Long-term debt: $5.1 million.
Spent $9.8 million — $7.9 million to run schools, about $16,372 per student, plus $832,000 on buildings and equipment. Money in: $2.5 million local (mostly property tax), $5.9 million state, $2.3 million federal.
Spent $12.4 million — $7.5 million to run schools, about $16,915 per student, plus $4.2 million on buildings and equipment. Money in: $2.8 million local (mostly property tax), $5.3 million state, $3.1 million federal. Long-term debt: $4.2 million.
Spent $8 million — $7 million to run schools, about $19,137 per student, plus $125,000 on buildings and equipment. Money in: $2 million local (mostly property tax), $4.4 million state, $1.7 million federal. Long-term debt: $481,000.
Spent $7.7 million — $5.3 million to run schools, about $23,558 per student, plus $1.2 million on buildings and equipment. Money in: $1.8 million local (mostly property tax), $2.8 million state, $2.6 million federal. Long-term debt: $1.1 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 Clark County about $17.7 million a year on average in buildings, crops and lives. Ability to bounce back (community resilience): Relatively Low; social vulnerability: Very High.
Source: FEMA National Risk Index (December 2025), expected annual loss. Ratings compare counties nationwide; they're estimates, not predictions.
298 bridges in Clark County: 149 in good condition, 116 fair, and 33 poor (11.1%). “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.
| STH 13 over PORKY CREEK · built 1981 | 6,800 vehicles a day |
| STH 98-ELM DR over BEAR CREEK · built 1920 | 3,300 vehicles a day |
| CTH E over N. FK. POPPLE RIVER · built 1995 | 1,500 vehicles a day |
| CTH X over BLACK RIVER · built 1993 | 1,500 vehicles a day |
| CTH G BEGLEY ST over BLACK RIVER · built 1938 | 1,400 vehicles a day |
| LRD 5TH STREET over BLACK RIVER · built 1977 | 1,000 vehicles a day |
Source: Federal Highway Administration, National Bridge Inventory (2025 submission). Includes state, county and city bridges.
Federal grants paid for $21.4 million of work in Clark County in fiscal 2025, about $617 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 Clark 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 Clark County built: brayden.ozark@gmail.com.
More of Wisconsin: the state government and every county in Wisconsin.
Nearby counties: Jackson County (30 mi) · Taylor County (33 mi) · Eau Claire County (33 mi) · Wood County (34 mi) · Chippewa County (40 mi) · Marathon County (43 mi).