179,630 people (2024 Census estimate, −1.0% since 2020)
619 square miles of land · 290 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.
21 active community water systems list Peoria County in the area they serve, reporting 168,585 people served in all (a system that crosses county lines counts its whole population).
| IL AMERICAN-PEORIA surface water · private · IL1435030 | 137,575 served |
| CHILLICOTHE groundwater · local government · IL1430200 | 6,660 served |
| PEORIA HEIGHTS groundwater · local government · IL1434750 | 5,908 served |
| PLEASANT VALLEY PWD groundwater · local government · IL1435470 | 3,783 served |
| T-L RURAL WATER DISTRICT buys groundwater · local government · IL1430030 | 2,243 served |
| ELMWOOD groundwater · local government · IL1430300 | 2,058 served |
| LIMESTONE-WALTERS PWD buys groundwater · local government · IL1430020 | 2,023 served |
| PRINCEVILLE groundwater · local government · IL1430750 | 1,901 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 262 people were held in Peoria County's jail, in Vera's latest figure (2019), or 229 per 100,000 residents ages 15–64. In 2014 it was about 445.
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 Peoria County. School taxes are usually the largest part of a property tax bill.
Spent $274.3 million — $233.2 million to run schools, about $18,400 per student, plus $31.3 million on buildings and equipment. Money in: $84.8 million local (mostly property tax), $166 million state, $64 million federal. Long-term debt: $139.5 million.
Spent $66.4 million — $61.5 million to run schools, about $12,981 per student, plus $3.1 million on buildings and equipment. Money in: $44 million local (mostly property tax), $21.6 million state, $3.3 million federal. Long-term debt: $42 million.
Spent $29.8 million — $26.4 million to run schools, about $12,954 per student, plus $2.4 million on buildings and equipment. Money in: $15.5 million local (mostly property tax), $16.1 million state, $3.7 million federal. Long-term debt: $10 million.
Spent $20 million — $16.8 million to run schools, about $13,311 per student, plus $1.9 million on buildings and equipment. Money in: $10.3 million local (mostly property tax), $9.3 million state, $1.9 million federal. Long-term debt: $4.3 million.
Spent $25 million — $15.6 million to run schools, about $16,887 per student, plus $6.9 million on buildings and equipment. Money in: $10.5 million local (mostly property tax), $14 million state, $3 million federal. Long-term debt: $9.1 million.
Spent $15.2 million — $11.8 million to run schools, about $13,118 per student, plus $2.6 million on buildings and equipment. Money in: $8 million local (mostly property tax), $8.5 million state, $1.2 million federal. Long-term debt: $2.9 million.
Spent $16.3 million — $12 million to run schools, about $15,954 per student, plus $974,000 on buildings and equipment. Money in: $6.8 million local (mostly property tax), $9 million state, $1.8 million federal. Long-term debt: $5.6 million.
Spent $12 million — $8.3 million to run schools, about $12,673 per student, plus $2.4 million on buildings and equipment. Money in: $5.8 million local (mostly property tax), $4.6 million state, $1 million federal. Long-term debt: $10.8 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 Peoria County about $84.7 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.
351 bridges in Peoria County: 76 in good condition, 212 fair, and 63 poor (17.9%). “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.
| US 150 WB over IL 29 · built 1995 | 30,000 vehicles a day |
| SB ILL 6 over CHARTER OAK ROAD · built 1978 | 28,400 vehicles a day |
| NB ILL 6 over HOERRS POND · built 1981 | 21,100 vehicles a day |
| SB ILL 6 over HOERRS POND · built 1981 | 21,100 vehicles a day |
| US 150 over UPRR 175626N-MP73.04 · built 1988 | 18,700 vehicles a day |
| IL 40 over IL 6 · built 1982 | 18,300 vehicles a day |
Source: Federal Highway Administration, National Bridge Inventory (2025 submission). Includes state, county and city bridges.
Federal grants paid for $116.9 million of work in Peoria County in fiscal 2025, about $643 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 Peoria 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 Peoria County built: brayden.ozark@gmail.com.
More of Illinois: the state government and every county in Illinois.
Nearby counties: Stark County (22 mi) · Tazewell County (23 mi) · Knox County (25 mi) · Marshall County (28 mi) · Woodford County (29 mi) · Fulton County (32 mi).