15,008 people (2024 Census estimate, −3.8% since 2020)
501 square miles of land · 30 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.
7 active community water systems list Floyd County in the area they serve, reporting 10,575 people served in all (a system that crosses county lines counts its whole population).
| CHARLES CITY WATER SUPPLY groundwater · local government · IA3405012 | 7,446 served |
| NORA SPRINGS WATER SUPPLY groundwater · local government · IA3423069 | 1,369 served |
| ROCKFORD WATER SUPPLY groundwater · local government · IA3430091 | 762 served |
| RUDD WATERWORKS groundwater · local government · IA3440007 | 358 served |
| FLOYD MUNI WATER SUPPLY groundwater · local government · IA3414044 | 313 served |
| MARBLE ROCK WATER SUPPLY groundwater · local government · IA3420031 | 272 served |
| COLWELL, CITY OF groundwater · local government · IA3409066 | 55 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 Floyd County's jail, in Vera's latest figure (2019), or 321 per 100,000 residents ages 15–64. In 2014 it was about 12.
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 Floyd County. School taxes are usually the largest part of a property tax bill.
Spent $25 million — $22.1 million to run schools, about $14,332 per student, plus $2.2 million on buildings and equipment. Money in: $9.9 million local (mostly property tax), $14.4 million state, $3.4 million federal. Long-term debt: $7.9 million.
Spent $6.8 million — $5.5 million to run schools, about $13,047 per student, plus $659,000 on buildings and equipment. Money in: $3.5 million local (mostly property tax), $3.3 million state, $796,000 federal.
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 Floyd County about $14.6 million a year on average in buildings, crops and lives. Ability to bounce back (community resilience): Very High; social vulnerability: Relatively Moderate.
Source: FEMA National Risk Index (December 2025), expected annual loss. Ratings compare counties nationwide; they're estimates, not predictions.
214 bridges in Floyd County: 108 in good condition, 76 fair, and 30 poor (14.0%). “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.
| GILBERT ST over SHERMANS CREEK · built 1914 | 6,893 vehicles a day |
| MAIN ST over CEDAR RIVER · built 1909 | 4,971 vehicles a day |
| FM over LITTLE CEDAR RIVER · built 1974 | 1,414 vehicles a day |
| FM over DRAINAGE DITCH · built 1919 | 1,159 vehicles a day |
| HWY 147 over SMALL NATURAL STREAM · built 1967 | 1,070 vehicles a day |
| OLD HWY RD over BLOODY RUN CREEK · built 1927 | 687 vehicles a day |
Source: Federal Highway Administration, National Bridge Inventory (2025 submission). Includes state, county and city bridges.
Federal grants paid for $1.2 million of work in Floyd County in fiscal 2025, about $78 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 Floyd 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 Floyd County built: brayden.ozark@gmail.com.
More of Iowa: the state government and every county in Iowa.
Nearby counties: Mitchell County (20 mi) · Butler County (22 mi) · Cerro Gordo County (23 mi) · Chickasaw County (24 mi) · Bremer County (30 mi) · Howard County (32 mi).