17,008 people (2024 Census estimate, −3.1% since 2020)
794 square miles of land · 21 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.
11 active community water systems list Hancock County in the area they serve, reporting 11,851 people served in all (a system that crosses county lines counts its whole population).
| HAMILTON surface water · local government · IL0670400 | 2,753 served |
| CARTHAGE groundwater · local government · IL0670250 | 2,510 served |
| WARSAW surface water · local government · IL0670650 | 1,480 served |
| LAHARPE groundwater · local government · IL0670450 | 1,200 served |
| NAUVOO surface water · local government · IL0670500 | 1,200 served |
| DALLAS CITY buys groundwater · local government · IL0674300 | 788 served |
| AUGUSTA buys groundwater · local government · IL0670050 | 553 served |
| BOWEN buys groundwater · local government · IL0670200 | 494 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 18 people were held in Hancock County's jail, in Vera's latest figure (2023), or 181 per 100,000 residents ages 15–64. In 2018 it was about 30.
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 Hancock County. School taxes are usually the largest part of a property tax bill.
Spent $8.5 million — $7.3 million to run schools, about $12,462 per student, plus $324,000 on buildings and equipment. Money in: $4 million local (mostly property tax), $3.9 million state, $1.2 million federal. Long-term debt: $6.6 million.
Spent $9 million — $7.6 million to run schools, about $16,665 per student, plus $1 million on buildings and equipment. Money in: $3.6 million local (mostly property tax), $4.1 million state, $2 million federal.
Spent $7.2 million — $6.1 million to run schools, about $14,610 per student, plus $478,000 on buildings and equipment. Money in: $3.1 million local (mostly property tax), $3.6 million state, $835,000 federal. Long-term debt: $495,000.
Spent $5.6 million — $5 million to run schools, about $11,942 per student, plus $264,000 on buildings and equipment. Money in: $3 million local (mostly property tax), $2.7 million state, $703,000 federal.
Spent $6.2 million — $5.5 million to run schools, about $16,105 per student, plus $74,000 on buildings and equipment. Money in: $3.6 million local (mostly property tax), $2.8 million state, $768,000 federal.
Spent $5 million — $4.2 million to run schools, about $20,818 per student, plus $42,000 on buildings and equipment. Money in: $3.1 million local (mostly property tax), $1.7 million state, $255,000 federal. Long-term debt: $1.1 million.
Spent $4.1 million — $3.4 million to run schools, about $17,220 per student, plus $592,000 on buildings and equipment. Money in: $2.5 million local (mostly property tax), $1.4 million state, $564,000 federal. Long-term debt: $1.8 million.
Spent $3.7 million — $3 million to run schools, about $17,538 per student, plus $559,000 on buildings and equipment. Money in: $1.1 million local (mostly property tax), $2 million state, $970,000 federal. Long-term debt: $125,000.
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: Very Low compared with other U.S. counties. FEMA estimates natural hazards cost Hancock County about $8.4 million a year on average in buildings, crops and lives. Ability to bounce back (community resilience): Relatively High; social vulnerability: Relatively High.
Source: FEMA National Risk Index (December 2025), expected annual loss. Ratings compare counties nationwide; they're estimates, not predictions.
290 bridges in Hancock County: 122 in good condition, 105 fair, and 63 poor (21.7%). “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.
| FAP 685 ILL 9 over MISSISSIPPI RIVER · built 1927 | 2,500 vehicles a day |
| FAS 1600 over RAILROAD CREEK · built 1960 | 2,300 vehicles a day |
| IL 9 over DITCH · built 1928 | 950 vehicles a day |
| FAS-428 (CH-11) over BEAR CREEK · built 1952 | 500 vehicles a day |
| FAS 424 over CAMP CREEK · built 1968 | 450 vehicles a day |
| CO. HWY. 12 over PETIT CREEK · built 1979 | 350 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 Hancock County in fiscal 2025, about $384 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 Hancock 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 Hancock County built: brayden.ozark@gmail.com.
More of Illinois: the state government and every county in Illinois.
Nearby counties: Lee County, IA (23 mi) · McDonough County (26 mi) · Adams County (29 mi) · Clark County, MO (29 mi) · Henderson County (31 mi) · Schuyler County (34 mi).