10,616 people (2024 Census estimate, −1.3% since 2020)
571 square miles of land · 19 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.
8 active community water systems list Hancock County in the area they serve, reporting 7,077 people served in all (a system that crosses county lines counts its whole population).
| GARNER WATER WORKS groundwater · local government · IA4130075 | 3,065 served |
| BRITT WATER WORKS groundwater · local government · IA4103045 | 2,064 served |
| KANAWHA WATER SUPPLY groundwater · local government · IA4150014 | 658 served |
| KLEMME WATER WORKS groundwater · local government · IA4155035 | 441 served |
| CORWITH WATER SUPPLY groundwater · local government · IA4109077 | 266 served |
| CRYSTAL LAKE WATER SUPPLY groundwater · local government · IA4115092 | 255 served |
| WODEN WATER SUPPLY groundwater · local government · IA4170033 | 188 served |
| GOODELL WATER SUPPLY groundwater · local government · IA4135093 | 140 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 7 people were held in Hancock County's jail, in Vera's latest figure (2017), or 106 per 100,000 residents ages 15–64. In 2012 it was about 7.
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.
2 school districts have their office in Hancock County. School taxes are usually the largest part of a property tax bill.
Spent $14 million — $11.5 million to run schools, about $11,689 per student, plus $1.2 million on buildings and equipment. Money in: $10.5 million local (mostly property tax), $5.7 million state, $878,000 federal. Long-term debt: $4 million.
Spent $8.3 million — $7.4 million to run schools, about $12,275 per student, plus $248,000 on buildings and equipment. Money in: $4.3 million local (mostly property tax), $4.3 million state, $893,000 federal. Long-term debt: $942,000.
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 $11.2 million a year on average in buildings, crops and lives. Ability to bounce back (community resilience): Very High; social vulnerability: Very Low.
Source: FEMA National Risk Index (December 2025), expected annual loss. Ratings compare counties nationwide; they're estimates, not predictions.
135 bridges in Hancock County: 55 in good condition, 53 fair, and 27 poor (20.0%). “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 69 over GALLS CREEK · built 1930 | 2,450 vehicles a day |
| FM 1870 330TH over WINNEBAGO RIVER · built 1963 | 2,192 vehicles a day |
| FM 2430 JAMES over W BRANCH IOWA RIVER · built 1948 | 828 vehicles a day |
| 1350 170TH ST over WEST IOWA RIVER · built 1979 | 569 vehicles a day |
| FM 2380 DEER AV over DRAINAGE DITCH 97 · built 1968 | 447 vehicles a day |
| FM 2030 VAIL over GOLLS CREEK · built 1969 | 259 vehicles a day |
Source: Federal Highway Administration, National Bridge Inventory (2025 submission). Includes state, county and city bridges.
Federal grants paid for $45.1 million of work in Hancock County in fiscal 2025, about $4,176 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 Iowa 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 Iowa: the state government and every county in Iowa.
Nearby counties: Winnebago County (21 mi) · Wright County (24 mi) · Cerro Gordo County (25 mi) · Kossuth County (26 mi) · Humboldt County (31 mi) · Worth County (32 mi).