Boone County, Illinois
Boone County: county in Illinois, United States
About
Boone County is a county located in the U.S. state of Illinois. As of the 2010 census, the population was 54,165 and a population density of 74 people per km². After 10 years in 2020 county had an estimated population of 52,777 inhabitants. Its county seat is Belvidere. The county was created 189 years ago in 1836.
County Snapshot
Boone County at a glance
Boone County currently has 6 quality-checked populated place pages linked on MapSof, making it easier to jump from the county overview into local city pages.
Mapped populated places
6
These counts use a stricter populated-place filter so the main lists stay focused on real city and town pages.
Illinois counties
102
Open related pagesLargest city
BelviderePopulation 24,731
Top linked places
Quick Facts about Boone County
| Population | 52,777 (2020) |
| Country | United States of America |
| State | Illinois (United States) |
| Different from | Boone County, Boone County, Boone County, Boone County, Boone County, Boone County, Boone County |
| Area | 730 km2 |
| Water as percent of area | 0.5% |
| Land as percent of area | 99.5% |
| Latitude & Longitude | 42.3231,-88.8234 |
| Named for | Daniel Boone |
| Capital | Belvidere |
| Establishment | January 01, 1837 |
| Time Zone | America/Chicago |
| Local time | 15:57:17 (18th April 2026) |
| Density | 72 Pop. per km² as of 2020 |
| Population growth | -2.63% (2010-2020) |
| Weather | 48℉ Partly Sunny 7-days weather |
Geography
Boone County is located at 42°19'23"N 88°49'24"W (42.3230800, -88.8233600). It has 6 neighbors: DeKalb County, McHenry County, Ogle County, Winnebago County, Rock County and Walworth County.
Boone County map
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The largest city of Boone County is Belvidere with a population of 24,731. Other cities include, Poplar Grove population 5,075, Capron population 1,343, Timberlane population 934 and Hunter population 227. See all Boone County cities & populated places.
Boone County Populated Places
Cities, towns, neighborhoods & other populated places in Boone County.
| City Name | Population | Title |
|---|---|---|
| Belvidere | 24,731 | City in Illinois |
| Poplar Grove | 5,075 | Human settlement |
| Capron | 1,343 | City in Boone County, Illinois, United States of America |
| Timberlane | 934 | Human settlement in Illinois, United States of America |
| Hunter | 227 | Unincorporated community in Illinois |
| Caledonia | 182 | Village in Boone County, Illinois, United States |
Weather
Partly sunny, with a high near 48. West northwest wind around 20 mph, with gusts as high as 35 mph.
7-Day ForecastOfficial website of Boone County
Official WebsiteDemographics
According to census records, the population of Boone County decreased by 2.63% in 10 years.
| Year | Population | % Change | Method |
|---|---|---|---|
| 2010 | 54,165 | - | census |
| 2011 | 54,131 | -0.06% | estimation process |
| 2012 | 53,735 | -0.74% | estimation process |
| 2013 | 53,747 | 0.02% | estimation process |
| 2014 | 53,714 | -0.06% | estimation process |
| 2015 | 53,579 | -0.25% | estimation process |
| 2016 | 53,570 | -0.02% | estimation process |
| 2017 | 53,513 | -0.11% | estimation process |
| 2018 | 53,480 | -0.06% | estimation process |
| 2019 | 53,544 | 0.12% | estimation process |
| 2020 | 52,777 | -1.45% | estimation process |
People born in Boone County (2)
People born in Boone County, including politician William D. Boies, Marcus White Woods, .
More notable people
Other places with the same name (7)
- Boone County, Missouri county in West Virginia, United States with a population of 182,991 people.
- Boone County, Kentucky county in Kentucky, United States with a population of 135,396 people.
- Boone County, Indiana county in Indiana, United States with a population of 69,347 people.
- Boone County, Arkansas county in Arkansas, United States with a population of 37,625 people.
- Boone County, Iowa county in Iowa, United States with a population of 26,277 people.
- Boone County, West Virginia county in West Virginia, United States with a population of 21,055 people.
- Boone County, Nebraska county in Nebraska, United States with a population of 5,096 people.
Illinois Other Counties (more counties)
| County Name | Population | Title |
|---|---|---|
| Cook County | 5,108,284 | County in Illinois, United States |
| Chicago | 2,677,643 | The third most populous city in the United States and the center of the Chicago metropolitan area. |
| DuPage County | 917,481 | County in Illinois, United States |
| Lake County | 693,593 | County in Oregon, United States |
| Will County | 688,726 | County in Illinois, United States |
| Kane County | 531,010 | County in southern Utah, United States |
| McHenry County | 305,888 | County in Illinois, United States |
| Winnebago County | 281,295 | County in Illinois, United States |
| Madison County | 262,635 | County in Montana, United States |
| Saint Clair County | 258,046 | The County of St. |
| Champaign County | 209,192 | County in Illinois, United States |
| Aurora | 196,383 | The second most populous city in Illinois. |
| Sangamon County | 193,882 | County in Illinois, United States |
| Peoria County | 177,652 | County in Illinois, United States of America |
| McLean County | 171,256 | County in North Dakota, United States |
| Naperville | 147,986 | The second most populous city in Illinois. |