8,662 people (2024 Census estimate, −1.0% since 2020)
570 square miles of land · 15 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.
5 active community water systems list Greene County in the area they serve, reporting 11,915 people served in all (a system that crosses county lines counts its whole population).
| XENIA RWD (NORTH) groundwater · private · IA9425701 | 6,122 served |
| JEFFERSON WATER DEPARTMENT groundwater · local government · IA3742004 | 4,182 served |
| GRAND JCT MUNICIPAL WATER DEPT groundwater · local government · IA3730098 | 725 served |
| SCRANTON WATER SYSTEM groundwater · local government · IA3759031 | 511 served |
| CHURDAN WATER SUPPLY buys groundwater · local government · IA3709001 | 375 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 8 people were held in Greene County's jail, in Vera's latest figure (2019), or 154 per 100,000 residents ages 15–64. In 2014 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 Greene County. School taxes are usually the largest part of a property tax bill.
Spent $19.9 million — $17 million to run schools, about $13,485 per student, plus $1.5 million on buildings and equipment. Money in: $11.4 million local (mostly property tax), $9.8 million state, $1.5 million federal. Long-term debt: $27 million.
Spent $3.6 million — $2.8 million to run schools, about $15,016 per student, plus $194,000 on buildings and equipment. Money in: $2 million local (mostly property tax), $1.4 million state, $251,000 federal. Long-term debt: $55,000.
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 Greene County about $12.2 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.
168 bridges in Greene County: 61 in good condition, 82 fair, and 25 poor (14.9%). “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.
| S GRIMMELL RD over RACCOON RIVER · built 1947 | 1,572 vehicles a day |
| 330 TH / E63 over DRAINAGE DITCH 9-13 · built 1970 | 379 vehicles a day |
| 222ND ST over WEST BEAVER CREEK · built 1921 | 300 vehicles a day |
| A AVE over DD 150-86 · built 1964 | 293 vehicles a day |
| 170 TH / E26 over DRAINAGE DITCH 110 · built 1963 | 229 vehicles a day |
| J AVE / P14 over GREENBRIER CREEK · built 1971 | 190 vehicles a day |
Source: Federal Highway Administration, National Bridge Inventory (2025 submission). Includes state, county and city bridges.
Federal grants paid for $1.1 million of work in Greene County in fiscal 2025, about $125 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 Greene 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 Greene County built: brayden.ozark@gmail.com.
More of Iowa: the state government and every county in Iowa.
Nearby counties: Boone County (23 mi) · Carroll County (25 mi) · Guthrie County (25 mi) · Calhoun County (27 mi) · Webster County (29 mi) · Dallas County (30 mi).