15,319 people (2024 Census estimate, −0.9% since 2020)
398 square miles of land · 39 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.
8 active community water systems list De Witt County in the area they serve, reporting 10,955 people served in all (a system that crosses county lines counts its whole population).
| CLINTON groundwater · local government · IL0390050 | 7,200 served |
| FARMER CITY groundwater · local government · IL0390150 | 1,811 served |
| WAPELLA groundwater · local government · IL0390250 | 513 served |
| WELDON groundwater · local government · IL0390350 | 404 served |
| KENNEY groundwater · local government · IL0390200 | 400 served |
| WAYNESVILLE groundwater · local government · IL0390300 | 381 served |
| DE WITT groundwater · local government · IL0390100 | 175 served |
| WEST SIDE MHP groundwater · private · IL0395225 | 71 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 24 people were held in De Witt County's jail, in Vera's latest figure (2019), or 241 per 100,000 residents ages 15–64. In 2014 it was about 51.
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 De Witt County. School taxes are usually the largest part of a property tax bill.
Spent $32.4 million — $28.8 million to run schools, about $17,107 per student, plus $2.4 million on buildings and equipment. Money in: $19 million local (mostly property tax), $12.9 million state, $3.8 million federal. Long-term debt: $11.6 million.
Spent $13.7 million — $12.3 million to run schools, about $18,321 per student, plus $738,000 on buildings and equipment. Money in: $11.8 million local (mostly property tax), $5.2 million state, $1 million federal. Long-term debt: $9 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 De Witt County about $9.5 million a year on average in buildings, crops and lives. Ability to bounce back (community resilience): Very High; social vulnerability: Relatively Moderate.
Source: FEMA National Risk Index (December 2025), expected annual loss. Ratings compare counties nationwide; they're estimates, not predictions.
192 bridges in De Witt County: 107 in good condition, 74 fair, and 11 poor (5.7%). “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.
| IL 54 (FAP 71) over I-74 · built 1970 | 2,800 vehicles a day |
| FAU-7331 (Walnut S over Ten Mile Creek · built 1974 | 600 vehicles a day |
| TR 151 over COON CREEK · built 1966 | 350 vehicles a day |
| MS-1090 (Webster S over Ten Mile Creek · built 1970 | 150 vehicles a day |
| TR 189 over COON CREEK · built 1962 | 150 vehicles a day |
| TR 56 over TEN MILE CREEK · built 1986 | 75 vehicles a day |
Source: Federal Highway Administration, National Bridge Inventory (2025 submission). Includes state, county and city bridges.
Federal grants paid for $3.3 million of work in De Witt County in fiscal 2025, about $213 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 Illinois 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 De Witt 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 De Witt County built: brayden.ozark@gmail.com.
More of Illinois: the state government and every county in Illinois.
Nearby counties: Piatt County (20 mi) · McLean County (22 mi) · Macon County (22 mi) · Logan County (25 mi) · Champaign County (37 mi) · Tazewell County (39 mi).