106,029 people (2024 Census estimate, +0.7% since 2020)
555 square miles of land · 191 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.
30 active community water systems list Walworth County in the area they serve, reporting 70,495 people served in all (a system that crosses county lines counts its whole population).
| WHITEWATER WATERWORKS groundwater · local government · WI2650056 | 14,000 served |
| ELKHORN WATERWORKS groundwater · local government · WI2650062 | 10,317 served |
| DELAVAN WATERWORKS groundwater · local government · WI2650113 | 9,028 served |
| LAKE GENEVA UTILITY COMMISSION groundwater · local government · WI2650066 | 7,107 served |
| EAST TROY WATERWORKS groundwater · local government · WI2650123 | 5,054 served |
| BLOOMFIELD, VILLAGE OF groundwater · local government · WI2651469 | 4,071 served |
| LAKE COMO SANITARY DIST 1 groundwater · local government · WI2651536 | 3,038 served |
| GENOA CITY WATERWORKS groundwater · local government · WI2650058 | 2,766 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 163 people were held in Walworth County's jail, in Vera's latest figure (2025). In 2020 it was about 132.
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.
15 school districts have their office in Walworth County. School taxes are usually the largest part of a property tax bill.
Spent $52.2 million — $47.4 million to run schools, about $13,233 per student, plus $623,000 on buildings and equipment. Money in: $27.2 million local (mostly property tax), $25.1 million state, $5.6 million federal. Long-term debt: $40 million.
Spent $33.8 million — $29.2 million to run schools, about $14,679 per student, plus $414,000 on buildings and equipment. Money in: $15.6 million local (mostly property tax), $19.9 million state, $3.6 million federal. Long-term debt: $20.3 million.
Spent $32.6 million — $27.8 million to run schools, about $15,261 per student, plus $901,000 on buildings and equipment. Money in: $18.5 million local (mostly property tax), $12.9 million state, $4 million federal. Long-term debt: $10.6 million.
Spent $38.2 million — $28.9 million to run schools, about $15,910 per student, plus $1.4 million on buildings and equipment. Money in: $15.9 million local (mostly property tax), $20.7 million state, $5.5 million federal. Long-term debt: $21.9 million.
Spent $26.4 million — $20.6 million to run schools, about $14,165 per student, plus $1.7 million on buildings and equipment. Money in: $16.4 million local (mostly property tax), $10.5 million state, $3.1 million federal. Long-term debt: $18.3 million.
Spent $31.4 million — $23.7 million to run schools, about $17,611 per student, plus $4.8 million on buildings and equipment. Money in: $21.5 million local (mostly property tax), $6.9 million state, $2.6 million federal. Long-term debt: $6.4 million.
Spent $11.9 million — $10.1 million to run schools, about $15,040 per student, plus $162,000 on buildings and equipment. Money in: $12.5 million local (mostly property tax), $2.5 million state, $717,000 federal. Long-term debt: $14.9 million.
Spent $8.7 million — $7.1 million to run schools, about $15,190 per student, plus $52,000 on buildings and equipment. Money in: $3.4 million local (mostly property tax), $6.3 million state, $664,000 federal. Long-term debt: $8 million.
And 7 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 Walworth County about $39.7 million a year on average in buildings, crops and lives. Ability to bounce back (community resilience): Very High; social vulnerability: Relatively Low.
Source: FEMA National Risk Index (December 2025), expected annual loss. Ratings compare counties nationwide; they're estimates, not predictions.
215 bridges in Walworth County: 71 in good condition, 136 fair, and 8 poor (3.7%). “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.
| LRD RICHMOND RD over SWAN CREEK · built 1982 | 2,100 vehicles a day |
| LRD TOWN HALL RD over LADD CREEK · built 1974 | 496 vehicles a day |
| LRD BEACH RD over EAST TROY RR · built 1980 | 425 vehicles a day |
| LRD PETERS RD over BR LITTLE TURTLE CREEK · built 1956 | 235 vehicles a day |
| LRD PETERS RD over CMSTPP RR · built 1939 | 150 vehicles a day |
| LRD HILLSIDE RD over CMSTPP RR · built 1920 | 107 vehicles a day |
Source: Federal Highway Administration, National Bridge Inventory (2025 submission). Includes state, county and city bridges.
Federal grants paid for $16.7 million of work in Walworth County in fiscal 2025, about $157 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 Walworth 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 Walworth County built: brayden.ozark@gmail.com.
More of Wisconsin: the state government and every county in Wisconsin.
Nearby counties: McHenry County, IL (24 mi) · Jefferson County (27 mi) · Waukesha County (27 mi) · Rock County (27 mi) · Boone County, IL (28 mi) · Kenosha County (34 mi).