9,142 people (2024 Census estimate, −3.6% since 2020)
571 square miles of land · 16 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.
11 active community water systems list Brown County in the area they serve, reporting 7,027 people served in all (a system that crosses county lines counts its whole population).
| HIAWATHA, CITY OF groundwater · local government · KS2001305 | 3,246 served |
| HORTON, CITY OF groundwater · local government · KS2001306 | 1,514 served |
| BROWN CO RWD 2 buys groundwater · local government · KS2001312 | 724 served |
| BROWN CO RWD 1 groundwater · local government · KS2001304 | 709 served |
| EVEREST, CITY OF groundwater · local government · KS2001308 | 259 served |
| MORRILL, CITY OF buys surface water · local government · KS2001307 | 217 served |
| ROBINSON, CITY OF buys groundwater · local government · KS2001301 | 181 served |
| RESERVE, CITY OF buys groundwater · local government · KS2001302 | 70 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 17 people were held in Brown County's jail, in Vera's latest figure (2021), or 313 per 100,000 residents ages 15–64. In 2016 it was about 23.
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 Brown County. School taxes are usually the largest part of a property tax bill.
Spent $14.8 million — $13.4 million to run schools, about $14,668 per student, plus $1.4 million on buildings and equipment. Money in: $4.8 million local (mostly property tax), $9.2 million state, $1 million federal. Long-term debt: $6.2 million.
Spent $13.6 million — $9.7 million to run schools, about $17,703 per student, plus $3.7 million on buildings and equipment. Money in: $2.1 million local (mostly property tax), $6.5 million state, $1.7 million federal. Long-term debt: $7 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: Very Low compared with other U.S. counties. FEMA estimates natural hazards cost Brown County about $7.2 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.
256 bridges in Brown County: 128 in good condition, 117 fair, and 11 poor (4.3%). “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.
| RS 2085 240th St. over UNNAMED STREAM · built 1930 | 1,096 vehicles a day |
| RS 60 170th St. over SQUAW CREEK · built 1925 | 320 vehicles a day |
| IRR BIA RTE 1006 over DELAWARE RIVER · built 1970 | 150 vehicles a day |
| IRR BIA RTE 1008 over TRASH CREEK · built 1985 | 150 vehicles a day |
| Coralberry Rd. over UNNAMED STREAM · built 1930 | 60 vehicles a day |
| 220th St. over UNNAMED STREAM · built 1930 | 50 vehicles a day |
Source: Federal Highway Administration, National Bridge Inventory (2025 submission). Includes state, county and city bridges.
Federal grants paid for $22.6 million of work in Brown County in fiscal 2025, about $2,381 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 Brown 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 Brown County built: brayden.ozark@gmail.com.
More of Kansas: the state government and every county in Kansas.
Nearby counties: Richardson County, NE (22 mi) · Doniphan County (23 mi) · Nemaha County (23 mi) · Atchison County (24 mi) · Holt County, MO (26 mi) · Jackson County (31 mi).