520,997 people (2024 Census estimate, +0.9% since 2020)
519 square miles of land · 1,003 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.
39 active community water systems list Kane County in the area they serve, reporting 567,698 people served in all (a system that crosses county lines counts its whole population).
| AURORA surface water · local government · IL0894070 | 183,000 served |
| ELGIN surface water · local government · IL0894380 | 114,797 served |
| CARPENTERSVILLE groundwater · local government · IL0890200 | 37,983 served |
| ST CHARLES groundwater · local government · IL0894830 | 33,081 served |
| MONTGOMERY groundwater · local government · IL0894690 | 28,956 served |
| BATAVIA groundwater · local government · IL0894130 | 26,098 served |
| SOUTH ELGIN groundwater · local government · IL0890800 | 23,648 served |
| GENEVA groundwater · local government · IL0890350 | 21,247 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 340 people were held in Kane County's jail, in Vera's latest figure (2023), or 101 per 100,000 residents ages 15–64. In 2018 it was about 506.
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 Kane County. School taxes are usually the largest part of a property tax bill.
Spent $756.9 million — $674.1 million to run schools, about $19,216 per student, plus $40.7 million on buildings and equipment. Money in: $360.7 million local (mostly property tax), $424 million state, $103.4 million federal. Long-term debt: $186 million.
Spent $261.7 million — $215.4 million to run schools, about $17,069 per student, plus $32.9 million on buildings and equipment. Money in: $44.4 million local (mostly property tax), $214.7 million state, $46.1 million federal. Long-term debt: $137.2 million.
Spent $264.1 million — $252.1 million to run schools, about $21,364 per student, plus $7 million on buildings and equipment. Money in: $188.2 million local (mostly property tax), $75 million state, $8.5 million federal. Long-term debt: $24 million.
Spent $214.3 million — $183.6 million to run schools, about $16,379 per student, plus $18.1 million on buildings and equipment. Money in: $114.1 million local (mostly property tax), $97.4 million state, $31.4 million federal. Long-term debt: $102.4 million.
Spent $111.9 million — $103.4 million to run schools, about $19,649 per student, plus $4.8 million on buildings and equipment. Money in: $91.5 million local (mostly property tax), $32.2 million state, $4.5 million federal. Long-term debt: $29.6 million.
Spent $118.9 million — $106 million to run schools, about $20,700 per student, plus $4 million on buildings and equipment. Money in: $100.7 million local (mostly property tax), $32.7 million state, $3 million federal. Long-term debt: $104.6 million.
Spent $88.4 million — $73.3 million to run schools, about $15,085 per student, plus $4.7 million on buildings and equipment. Money in: $62.3 million local (mostly property tax), $29.2 million state, $4.3 million federal. Long-term debt: $36.8 million.
Spent $90.4 million — $80.8 million to run schools, about $20,005 per student, plus $3.7 million on buildings and equipment. Money in: $67.7 million local (mostly property tax), $30.6 million state, $1.8 million federal. Long-term debt: $72 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 Kane County about $198.1 million a year on average in buildings, crops and lives. Ability to bounce back (community resilience): Relatively High; social vulnerability: Very Low.
Source: FEMA National Risk Index (December 2025), expected annual loss. Ratings compare counties nationwide; they're estimates, not predictions.
339 bridges in Kane County: 153 in good condition, 162 fair, and 24 poor (7.1%). “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.
| US 20 BY PASS over FOX RIVER · built 1960 | 47,200 vehicles a day |
| US 20 over ST CHARLES ST · built 1960 | 47,200 vehicles a day |
| KIRK ROAD over UNION PACIFIC R.R. · built 1974 | 29,300 vehicles a day |
| KIMBALL-ST over FOX RIVER · built 1917 | 16,900 vehicles a day |
| IL 31 over US 20 BY PASS · built 1959 | 15,800 vehicles a day |
| CHICAGO ST over FOX RIVER · built 1939 | 12,400 vehicles a day |
Source: Federal Highway Administration, National Bridge Inventory (2025 submission). Includes state, county and city bridges.
Federal grants paid for $51 million of work in Kane County in fiscal 2025, about $99 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 Illinois 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 Kane 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 Kane County built: brayden.ozark@gmail.com.
More of Illinois: the state government and every county in Illinois.
Nearby counties: DeKalb County (18 mi) · DuPage County (19 mi) · Kendall County (24 mi) · McHenry County (27 mi) · Boone County (33 mi) · Lake County (36 mi).