51,345 people (2024 Census estimate, −0.8% since 2020)
759 square miles of land · 68 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.
24 active community water systems list Ogle County in the area they serve, reporting 32,560 people served in all (a system that crosses county lines counts its whole population).
| ROCHELLE groundwater · local government · IL1410500 | 9,446 served |
| BYRON groundwater · local government · IL1410100 | 3,784 served |
| OREGON groundwater · local government · IL1410400 | 3,449 served |
| MOUNT MORRIS groundwater · local government · IL1410350 | 2,861 served |
| POLO groundwater · local government · IL1410450 | 2,355 served |
| DAVIS JUNCTION groundwater · local government · IL1410030 | 2,344 served |
| FORRESTON groundwater · local government · IL1410200 | 1,338 served |
| HILLCREST groundwater · local government · IL1410250 | 1,224 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 73 people were held in Ogle County's jail, in Vera's latest figure (2019), or 223 per 100,000 residents ages 15–64. In 2014 it was about 90.
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 Ogle County. School taxes are usually the largest part of a property tax bill.
Spent $24.1 million — $21 million to run schools, about $13,322 per student, plus $54,000 on buildings and equipment. Money in: $12.6 million local (mostly property tax), $13.7 million state, $2.9 million federal. Long-term debt: $7.8 million.
Spent $30.8 million — $24.2 million to run schools, about $16,212 per student, plus $4.6 million on buildings and equipment. Money in: $13.7 million local (mostly property tax), $13.9 million state, $3.1 million federal. Long-term debt: $10.1 million.
Spent $34.9 million — $29.9 million to run schools, about $20,427 per student, plus $4.4 million on buildings and equipment. Money in: $30.4 million local (mostly property tax), $8.7 million state, $1.6 million federal. Long-term debt: $10.5 million.
Spent $24.6 million — $22.5 million to run schools, about $15,666 per student, plus $128,000 on buildings and equipment. Money in: $14.6 million local (mostly property tax), $11.6 million state, $1.6 million federal. Long-term debt: $19.1 million.
Spent $20.4 million — $17.6 million to run schools, about $20,359 per student, plus $1 million on buildings and equipment. Money in: $14.5 million local (mostly property tax), $8.7 million state, $380,000 federal. Long-term debt: $8.4 million.
Spent $14.6 million — $11.9 million to run schools, about $15,844 per student, plus $1.6 million on buildings and equipment. Money in: $7.4 million local (mostly property tax), $6.3 million state, $1.6 million federal. Long-term debt: $6.2 million.
Spent $10.5 million — $8.7 million to run schools, about $14,818 per student, plus $988,000 on buildings and equipment. Money in: $5.7 million local (mostly property tax), $4.7 million state, $998,000 federal. Long-term debt: $14.7 million.
Spent $1.9 million — $1.8 million to run schools, about $19,330 per student, plus $18,000 on buildings and equipment. Money in: $1.7 million local (mostly property tax), $576,000 state, $100,000 federal. Long-term debt: $369,000.
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 Low compared with other U.S. counties. FEMA estimates natural hazards cost Ogle County about $36.1 million a year on average in buildings, crops and lives. Ability to bounce back (community resilience): Very High; social vulnerability: Very Low.
Source: FEMA National Risk Index (December 2025), expected annual loss. Ratings compare counties nationwide; they're estimates, not predictions.
378 bridges in Ogle County: 178 in good condition, 172 fair, and 28 poor (7.4%). “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.
| LAKEVIEW DRIVE over KYTE CREEK · built 1963 | 1,750 vehicles a day |
| SEVENTH AVENUE over KYTE CREEK · built 1966 | 1,600 vehicles a day |
| FIRST AVENUE over KYTE CREEK · built 1978 | 1,550 vehicles a day |
| MULFORD RD over KILBUCK CR · built 1979 | 750 vehicles a day |
| MILL ROAD over MILL CREEK · built 1980 | 600 vehicles a day |
| BIG MOUND ROAD over KILBUCK CREEK · built 1981 | 500 vehicles a day |
Source: Federal Highway Administration, National Bridge Inventory (2025 submission). Includes state, county and city bridges.
Federal grants paid for $49.2 million of work in Ogle County in fiscal 2025, about $950 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 Ogle 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 Ogle County built: brayden.ozark@gmail.com.
More of Illinois: the state government and every county in Illinois.
Nearby counties: Lee County (20 mi) · Winnebago County (22 mi) · Stephenson County (28 mi) · DeKalb County (30 mi) · Carroll County (31 mi) · Boone County (32 mi).