536,081 people (2024 Census estimate, +2.1% since 2020)
997 square miles of land · 538 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.
23 active community water systems list Sedgwick County in the area they serve, reporting 497,465 people served in all (a system that crosses county lines counts its whole population).
| WICHITA, CITY OF surface water · local government · KS2017308 | 395,699 served |
| DERBY, CITY OF buys surface water · private · KS2017328 | 25,413 served |
| HAYSVILLE, CITY OF groundwater · local government · KS2017322 | 11,315 served |
| PARK CITY, CITY OF buys surface water · local government · KS2017303 | 8,503 served |
| BEL AIRE, CITY OF buys surface water · local government · KS2017304 | 8,448 served |
| VALLEY CENTER, CITY OF buys surface water · local government · KS2017318 | 7,419 served |
| MAIZE, CITY OF groundwater · local government · KS2017345 | 6,060 served |
| SEDGWICK CO RWD 3 buys surface water · local government · KS2017306 | 6,045 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 1,174 people were held in Sedgwick County's jail, in Vera's latest figure (2024), or 350 per 100,000 residents ages 15–64. In 2019 it was about 1,237.
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.
10 school districts have their office in Sedgwick County. School taxes are usually the largest part of a property tax bill.
Spent $827.3 million — $727.6 million to run schools, about $15,549 per student, plus $87.5 million on buildings and equipment. Money in: $145.3 million local (mostly property tax), $553.9 million state, $230.4 million federal. Long-term debt: $239.6 million.
Spent $127.5 million — $115.5 million to run schools, about $14,445 per student, plus $5.3 million on buildings and equipment. Money in: $51.5 million local (mostly property tax), $84.8 million state, $7.4 million federal. Long-term debt: $168 million.
Spent $100.1 million — $86.7 million to run schools, about $11,896 per student, plus $7.4 million on buildings and equipment. Money in: $24 million local (mostly property tax), $70.1 million state, $11.6 million federal. Long-term debt: $169.6 million.
Spent $99.8 million — $91.3 million to run schools, about $14,463 per student, plus $3.2 million on buildings and equipment. Money in: $35.1 million local (mostly property tax), $67.5 million state, $7.1 million federal. Long-term debt: $110.8 million.
Spent $83.1 million — $75.4 million to run schools, about $13,026 per student, plus $3.9 million on buildings and equipment. Money in: $11.8 million local (mostly property tax), $70.4 million state, $11.3 million federal. Long-term debt: $86.1 million.
Spent $51.8 million — $46.7 million to run schools, about $14,612 per student, plus $3.4 million on buildings and equipment. Money in: $17.7 million local (mostly property tax), $35.5 million state, $4.4 million federal. Long-term debt: $65.2 million.
Spent $24.6 million — $22.2 million to run schools, about $11,394 per student, plus $1.1 million on buildings and equipment. Money in: $7.7 million local (mostly property tax), $17.8 million state, $1.5 million federal. Long-term debt: $36.9 million.
Spent $23.8 million — $22.4 million to run schools, about $12,132 per student, plus $1.1 million on buildings and equipment. Money in: $5.9 million local (mostly property tax), $18 million state, $3 million federal. Long-term debt: $7.2 million.
And 2 more.
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 High compared with other U.S. counties. FEMA estimates natural hazards cost Sedgwick County about $255.9 million a year on average in buildings, crops and lives. Ability to bounce back (community resilience): Relatively High; social vulnerability: Relatively Low.
Source: FEMA National Risk Index (December 2025), expected annual loss. Ratings compare counties nationwide; they're estimates, not predictions.
1,339 bridges in Sedgwick County: 892 in good condition, 408 fair, and 39 poor (2.9%). “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.
| SOUTH BROADWAY over ROCK ISLAND RAILROAD · built 2013 | 10,826 vehicles a day |
| OLIVER over GYPSUM CREEK TRIB. · built 1964 | 10,200 vehicles a day |
| K 254 HWY EB over I135 HWY NB · built 1964 | 8,500 vehicles a day |
| N OLIVER ST over TRIB E FORK CHISHOLM CRK · built 1967 | 6,032 vehicles a day |
| 143rd over FOUR MILE CREEK · built 1953 | 5,591 vehicles a day |
| RS 82 over SPRING CREEK · built 1975 | 5,545 vehicles a day |
Source: Federal Highway Administration, National Bridge Inventory (2025 submission). Includes state, county and city bridges.
Federal grants paid for $158.8 million of work in Sedgwick County in fiscal 2025, about $303 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 Sedgwick 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 Sedgwick County built: brayden.ozark@gmail.com.
More of Kansas: the state government and every county in Kansas.
Nearby counties: Harvey County (26 mi) · Sumner County (31 mi) · Butler County (35 mi) · Kingman County (38 mi) · Reno County (38 mi) · Cowley County (46 mi).