11,670 people (2024 Census estimate, −1.0% since 2020)
944 square miles of land · 12 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.
12 active community water systems list Marion County in the area they serve, reporting 9,583 people served in all (a system that crosses county lines counts its whole population).
| HILLSBORO, CITY OF surface water · local government · KS2011505 | 2,740 served |
| MARION, CITY OF surface water · local government · KS2011507 | 1,902 served |
| MARION CO RWD 4 buys groundwater · local government · KS2011511 | 1,398 served |
| PEABODY, CITY OF buys surface water · local government · KS2011509 | 932 served |
| MARION CO RWD 1 groundwater · local government · KS2011510 | 780 served |
| GOESSEL, CITY OF groundwater · local government · KS2011504 | 558 served |
| FLORENCE, CITY OF groundwater (surface-influenced) · local government · KS2011503 | 387 served |
| MARION CO IMPROVEMENT DIST 2 buys surface water · local government · KS2011512 | 234 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 11 people were held in Marion County's jail, in Vera's latest figure (2021), or 157 per 100,000 residents ages 15–64. In 2016 it was about 14.
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.
5 school districts have their office in Marion County. School taxes are usually the largest part of a property tax bill.
Spent $9.8 million — $8.6 million to run schools, about $13,509 per student, plus $946,000 on buildings and equipment. Money in: $2.8 million local (mostly property tax), $7.6 million state, $425,000 federal. Long-term debt: $4.3 million.
Spent $5.7 million — $5.4 million to run schools, about $9,996 per student, plus $276,000 on buildings and equipment. Money in: $945,000 local (mostly property tax), $4.2 million state, $308,000 federal.
Spent $9 million — $8.5 million to run schools, about $16,643 per student, plus $348,000 on buildings and equipment. Money in: $2.4 million local (mostly property tax), $6.5 million state, $725,000 federal. Long-term debt: $1.4 million.
Spent $4.7 million — $4.6 million to run schools, about $15,639 per student, plus $88,000 on buildings and equipment. Money in: $961,000 local (mostly property tax), $4 million state, $160,000 federal. Long-term debt: $2.2 million.
Spent $4.6 million — $4.1 million to run schools, about $17,789 per student, plus $542,000 on buildings and equipment. Money in: $1.2 million local (mostly property tax), $2.8 million state, $600,000 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: Very Low compared with other U.S. counties. FEMA estimates natural hazards cost Marion 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.
323 bridges in Marion County: 125 in good condition, 163 fair, and 35 poor (10.8%). “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.
| 60 RD. over TRIB. TO DOYLE CREEK · built 1935 | 275 vehicles a day |
| 200 RD. over MUD CREEK · built 1900 | 50 vehicles a day |
| 320 RD. over TRIB. N. COTTONWOOD RIV. · built 1965 | 45 vehicles a day |
| 280 RD. over TRIB. TO N. COTTONWOOD · built 1915 | 45 vehicles a day |
| PAWNEE RD. over TRIB. TO MUD CREEK · built 1953 | 45 vehicles a day |
| 70 RD. over TRIB. TO DOYLE CREEK · built 1931 | 45 vehicles a day |
Source: Federal Highway Administration, National Bridge Inventory (2025 submission). Includes state, county and city bridges.
Federal grants paid for $2.3 million of work in Marion County in fiscal 2025, about $193 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 Kansas 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 Marion 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 Marion County built: brayden.ozark@gmail.com.
More of Kansas: the state government and every county in Kansas.
Nearby counties: Chase County (28 mi) · Harvey County (28 mi) · McPherson County (30 mi) · Morris County (33 mi) · Dickinson County (35 mi) · Saline County (42 mi).