84,670 people (2024 Census estimate, +3.3% since 2020)
463 square miles of land · 183 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.
16 active community water systems list Leavenworth County in the area they serve, reporting 82,837 people served in all (a system that crosses county lines counts its whole population).
| LEAVENWORTH WATER DEPARTMENT surface water · private · KS2010317 | 38,757 served |
| FORT LEAVENWORTH AMERICAN WATER ENT LLC groundwater · local government · KS2010311 | 12,934 served |
| LAN DEL WATER DISTRICT buys surface water · local government · KS2010313 | 7,302 served |
| TONGANOXIE, CITY OF groundwater (surface-influenced) · local government · KS2010306 | 5,702 served |
| SUBURBAN WATER COMPANY buys groundwater · private · KS2010321 | 4,700 served |
| LEAVENWORTH CO RWD 1C buys groundwater · local government · KS2010323 | 3,200 served |
| LEAVENWORTH CO RWD 7 groundwater · local government · KS2010320 | 3,000 served |
| LEAVENWORTH CO RWD 8 buys surface water · local government · KS2010309 | 2,500 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 108 people were held in Leavenworth County's jail, in Vera's latest figure (2024), or 202 per 100,000 residents ages 15–64. In 2019 it was about 170.
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.
6 school districts have their office in Leavenworth County. School taxes are usually the largest part of a property tax bill.
Spent $53.4 million — $49.6 million to run schools, about $13,771 per student, plus $1.6 million on buildings and equipment. Money in: $12.1 million local (mostly property tax), $40.7 million state, $7.7 million federal. Long-term debt: $72.3 million.
Spent $47.3 million — $42.1 million to run schools, about $13,845 per student, plus $2.3 million on buildings and equipment. Money in: $21.8 million local (mostly property tax), $28.2 million state, $2.3 million federal. Long-term debt: $102.7 million.
Spent $36.7 million — $33.1 million to run schools, about $12,481 per student, plus $876,000 on buildings and equipment. Money in: $9.2 million local (mostly property tax), $28.5 million state, $2.3 million federal. Long-term debt: $87.9 million.
Spent $37.9 million — $23.6 million to run schools, about $12,129 per student, plus $11.5 million on buildings and equipment. Money in: $12.2 million local (mostly property tax), $18.6 million state, $971,000 federal. Long-term debt: $87.7 million.
Spent $30.5 million — $24.9 million to run schools, about $14,378 per student, plus $4.3 million on buildings and equipment. Money in: $707,000 local (mostly property tax), $14 million state, $19.6 million federal.
Spent $9.9 million — $9.4 million to run schools, about $14,631 per student, plus $377,000 on buildings and equipment. Money in: $2.7 million local (mostly property tax), $7.7 million state, $602,000 federal. Long-term debt: $4.2 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 Leavenworth County about $34.5 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.
237 bridges in Leavenworth County: 142 in good condition, 86 fair, and 9 poor (3.8%). “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.
| K92 HWY over 2ND RIVPK RD RIV RR · built 1954 | 12,188 vehicles a day |
| ST-91 EVANS ROAD over TRIB. TO TONGANOXIE CK. · built 1986 | 1,860 vehicles a day |
| SH-54 GOLDEN DR over TRIB. TO KANSAS RIVER · built 1986 | 1,850 vehicles a day |
| ST-26 FAIRMOUNT over LITTLE STRANGER CREEK · built 1975 | 1,598 vehicles a day |
| B-1 Hollingsworth over TRIB. TO WOLF CREEK · built 1985 | 848 vehicles a day |
| K-19 179TH STREET over SALT CREEK · built 1972 | 600 vehicles a day |
Source: Federal Highway Administration, National Bridge Inventory (2025 submission). Includes state, county and city bridges.
Federal grants paid for $30.8 million of work in Leavenworth County in fiscal 2025, about $376 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 Leavenworth 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 Leavenworth County built: brayden.ozark@gmail.com.
More of Kansas: the state government and every county in Kansas.
Nearby counties: Wyandotte County (16 mi) · Jefferson County (18 mi) · Platte County, MO (20 mi) · Johnson County (24 mi) · Douglas County (24 mi) · Atchison County (28 mi).