Boone County, Illinois
Boone County, Illinois · ZIP 60033, 60145, 60146
- Census data · ACS 2019-2023
- 53,313 (2024 estimate)Population
- 19,155Households
- $81,638Median household income
- $198,600Median home value
- 17Towns with a page
- 12ZIP codes
Boone County in numbersOfficial sources, refreshed yearly
| Census | Population |
|---|---|
| 2000 | 41,786 |
| 2010 | 54,165 |
| 2020 | 53,448 |
As counted at each census, within the boundaries the area had then; the current estimate is in the glance card.
Sources: Census 2000 Summary File 1: total population, county level, state 17, retrieved November 14, 2026; Census 2010 Summary File 1: total population, county level, state 17, retrieved November 14, 2026; Census 2020 Redistricting Data (P.L. 94-171): total population, county level, state 17, retrieved November 14, 2026.
Median household income $81,638 · Share of households by income, American Community Survey 5-year 2019-2023, table S1901.
Source: American Community Survey 5-year subject table S1901 (household income) 2019–2023, county level, state 17, retrieved November 14, 2026.
- Owner occupied
- 15,907 units
- Renter occupied
- 3,248 units
- Vacancy rate
- 5.4%
Occupied housing units by tenure and the share of all units vacant, American Community Survey 5-year 2019-2023, table DP04.
Source: American Community Survey 5-year data profile 2019–2023, county level, state 17, retrieved November 14, 2026.
15,427 employees in 890 establishments with payroll in 2023, all sectors; employers themselves are not named in the source. County Business Patterns counts are published with noise.
Source: County Business Patterns 2023: employment by sector, county level, state 17, retrieved November 14, 2026.
| Measure | Boone County | Illinois |
|---|---|---|
| Population | 53,316 | 12,692,653 |
| Median household income | $81,638 | $81,702 |
| Median age | 39.5 | 38.9 |
| Median home value | $198,600 | $250,500 |
| Bachelor’s degree or higher | 23.2% | 37.2% |
| Foreign-born residents | 10.2% | 14.4% |
| Owner-occupied homes | 83.0% | 66.8% |
| Mean commute to work | 27.3 minutes | 28.1 minutes |
Source: American Community Survey 5-year data profile 2019–2023, county level, state 17, retrieved November 14, 2026.
Townships, towns and villages in Boone County17 with a page · sort by any column
| Type | |||
|---|---|---|---|
| Belvidere Township | Township | 29,342 | 36.1 sq mi |
| Belvidere | City | 25,325 | 12.8 sq mi |
| Caledonia Township | Township | 7,221 | 24.1 sq mi |
| Candlewick Lake | Census designated place | 5,459 | 1.85 sq mi |
| Poplar Grove Township | Township | 5,172 | 23.8 sq mi |
| Poplar Grove | Village | 5,165 | 7.88 sq mi |
| Bonus Township | Township | 4,371 | 35.6 sq mi |
| Flora Township | Township | 2,999 | 36.5 sq mi |
| Boone Township | Township | 2,019 | 23.9 sq mi |
| Capron | Village | 1,402 | 0.77 sq mi |
| Timberlane | Village | 902 | 1.75 sq mi |
| Manchester Township | Township | 867 | 33.5 sq mi |
| Spring Township | Township | 857 | 36.0 sq mi |
| Argyle | Census designated place | 561 | 0.88 sq mi |
| Garden Prairie | Census designated place | 560 | 0.64 sq mi |
| LeRoy Township | Township | 465 | 31.3 sq mi |
| Caledonia | Village | 182 | 1.03 sq mi |
Populations: Census Population Estimates, Vintage 2024: subcounty totals, state 17 (2024). Land areas: Census Gazetteer 2025: counties. A dash means the figure is not in the cited file.
County officialsFrom public records
No county official is published yet. Names appear once a researcher drafts them from the county’s own site and a second person approves; office contacts only, never personal details.
Across Boone County
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Neighboring counties
Neighboring counties
- DeKalb CountyPopulation 101,335 (2024 estimate)
- McHenry CountyPopulation 315,959 (2024 estimate)
- Ogle CountyPopulation 51,345 (2024 estimate)
- Rock CountyPopulation 165,461 (2024 estimate)
- Walworth CountyPopulation 106,029 (2024 estimate)
- Winnebago CountyPopulation 283,790 (2024 estimate)
Sources: Census county adjacency file 2024, retrieved November 14, 2026; Census Population Estimates, Vintage 2024: subcounty totals, state 17, retrieved November 14, 2026; Census Population Estimates, Vintage 2024: subcounty totals, state 55, retrieved November 14, 2026.