129,821 people (2024 Census estimate, −1.1% since 2020)
646 square miles of land · 201 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.
30 active community water systems list Tazewell County in the area they serve, reporting 121,586 people served in all (a system that crosses county lines counts its whole population).
| IL AMERICAN-PEKIN groundwater · private · IL1795040 | 31,731 served |
| EAST PEORIA groundwater · local government · IL1790200 | 22,484 served |
| MORTON groundwater · local government · IL1790500 | 17,117 served |
| WASHINGTON groundwater · local government · IL1790750 | 14,793 served |
| NORTH TAZEWELL PWD groundwater · local government · IL1795780 | 7,625 served |
| CREVE COEUR groundwater · local government · IL1790100 | 4,934 served |
| MACKINAW groundwater · local government · IL1790350 | 3,399 served |
| MARQUETTE HEIGHTS groundwater · local government · IL1790400 | 2,974 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 142 people were held in Tazewell County's jail, in Vera's latest figure (2023), or 176 per 100,000 residents ages 15–64. In 2018 it was about 137.
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.
18 school districts have their office in Tazewell County. School taxes are usually the largest part of a property tax bill.
Spent $50.9 million — $45.7 million to run schools, about $14,122 per student, plus $4.7 million on buildings and equipment. Money in: $34.8 million local (mostly property tax), $18.3 million state, $2.1 million federal. Long-term debt: $3.3 million.
Spent $58.7 million — $54.7 million to run schools, about $17,272 per student, plus $2.4 million on buildings and equipment. Money in: $18.9 million local (mostly property tax), $41.4 million state, $9.1 million federal. Long-term debt: $5.7 million.
Spent $38.1 million — $29.4 million to run schools, about $16,359 per student, plus $7.6 million on buildings and equipment. Money in: $18.2 million local (mostly property tax), $23.4 million state, $3.6 million federal. Long-term debt: $17.2 million.
Spent $24.4 million — $23.1 million to run schools, about $15,549 per student, plus $479,000 on buildings and equipment. Money in: $17 million local (mostly property tax), $9.4 million state, $734,000 federal. Long-term debt: $17.9 million.
Spent $28.7 million — $26.6 million to run schools, about $18,389 per student, plus $1.2 million on buildings and equipment. Money in: $14.9 million local (mostly property tax), $16.3 million state, $3.3 million federal. Long-term debt: $9.4 million.
Spent $16.9 million — $15.1 million to run schools, about $11,762 per student, plus $489,000 on buildings and equipment. Money in: $9.9 million local (mostly property tax), $7.3 million state, $1 million federal. Long-term debt: $21 million.
Spent $15.3 million — $13.9 million to run schools, about $14,614 per student, plus $804,000 on buildings and equipment. Money in: $7.7 million local (mostly property tax), $8.2 million state, $974,000 federal. Long-term debt: $8.4 million.
Spent $19.4 million — $16.4 million to run schools, about $17,332 per student, plus $2.4 million on buildings and equipment. Money in: $12.8 million local (mostly property tax), $10.8 million state, $1.6 million federal. Long-term debt: $12.6 million.
And 10 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 Moderate compared with other U.S. counties. FEMA estimates natural hazards cost Tazewell County about $60 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.
358 bridges in Tazewell County: 89 in good condition, 216 fair, and 53 poor (14.8%). “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.
| EB US 150 over ILLINOIS RIVER & T&P RR · built 1948 | 30,000 vehicles a day |
| WB US 150 over ILL RIVER T&P RR · built 1982 | 30,000 vehicles a day |
| US 150 & ILL 116 over IL RIVER TRIBUTARY · built 1964 | 20,400 vehicles a day |
| EB US 24 over ILL 116 · built 1962 | 19,200 vehicles a day |
| SB ILL 116 over SPRING CREEK · built 1965 | 17,200 vehicles a day |
| NB ILL 116 over SPRING CREEK · built 1928 | 17,200 vehicles a day |
Source: Federal Highway Administration, National Bridge Inventory (2025 submission). Includes state, county and city bridges.
Federal grants paid for $72.6 million of work in Tazewell County in fiscal 2025, about $553 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 Tazewell 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 Tazewell County built: brayden.ozark@gmail.com.
More of Illinois: the state government and every county in Illinois.
Nearby counties: Peoria County (23 mi) · Woodford County (25 mi) · Logan County (27 mi) · Mason County (28 mi) · McLean County (35 mi) · Fulton County (36 mi).