21,721 people (2024 Census estimate, +2.4% since 2020)
419 square miles of land · 52 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.
10 active community water systems list Clinton County in the area they serve, reporting 582,552 people served in all (a system that crosses county lines counts its whole population).
| KANSAS CITY PWS surface water · local government · MO1010415 | 553,295 served |
| CAMERON PWS surface water · local government · MO1010131 | 11,963 served |
| CLINTON CO PWSD 4 SYS 1 buys surface water · local government · MO1024156 | 4,968 served |
| CLINTON COUNTY PWSD 3 buys surface water · local government · MO1024155 | 3,722 served |
| LATHROP PWS buys surface water · local government · MO1010453 | 2,945 served |
| PLATTSBURG PWS surface water · local government · MO1010648 | 2,354 served |
| GOWER PWS buys groundwater · local government · MO1010318 | 1,360 served |
| CLINTON COUNTY PWSD 1 buys surface water · local government · MO1024153 | 1,080 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 20 people were held in Clinton County's jail, in Vera's latest figure (2019), or 150 per 100,000 residents ages 15–64. In 2014 it was about 18.
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.
4 school districts have their office in Clinton County. School taxes are usually the largest part of a property tax bill.
Spent $24.2 million — $19.8 million to run schools, about $12,000 per student, plus $3.3 million on buildings and equipment. Money in: $9.5 million local (mostly property tax), $11.2 million state, $3 million federal. Long-term debt: $17.3 million.
Spent $11.9 million — $11.3 million to run schools, about $12,181 per student, plus $157,000 on buildings and equipment. Money in: $6 million local (mostly property tax), $6.5 million state, $1 million federal. Long-term debt: $5.9 million.
Spent $9.7 million — $9.3 million to run schools, about $12,871 per student, plus $331,000 on buildings and equipment. Money in: $5 million local (mostly property tax), $4.6 million state, $872,000 federal.
Spent $9.5 million — $8.8 million to run schools, about $13,277 per student, plus $157,000 on buildings and equipment. Money in: $6.1 million local (mostly property tax), $3.7 million state, $1.6 million federal. Long-term debt: $11.1 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 Low compared with other U.S. counties. FEMA estimates natural hazards cost Clinton County about $22.2 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.
153 bridges in Clinton County: 51 in good condition, 90 fair, and 12 poor (7.8%). “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.
| NE 303RD ST over DEER CR · built 1997 | 50 vehicles a day |
| NE 280TH ST over LIT PLATTE RVR · built 1989 | 40 vehicles a day |
| SW 200TH ST over DICKS CR · built 1950 | 40 vehicles a day |
| NW 284TH ST over CASTILE CR · built 1970 | 35 vehicles a day |
| NW BETHANY CH RD over BR OF CASTILE CR · built 1989 | 35 vehicles a day |
| NE 352ND ST over LIT PLATTE RVR · built 1991 | 25 vehicles a day |
Source: Federal Highway Administration, National Bridge Inventory (2025 submission). Includes state, county and city bridges.
Federal grants paid for $22.8 million of work in Clinton County in fiscal 2025, about $1,078 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 Missouri 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 Clinton 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 Clinton County built: brayden.ozark@gmail.com.
More of Missouri: the state government and every county in Missouri.
Nearby counties: DeKalb County (20 mi) · Clay County (20 mi) · Buchanan County (22 mi) · Caldwell County (22 mi) · Platte County (25 mi) · Ray County (30 mi).