Boone County , Illinois

Boone County: County in Illinois, United States


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 185 years ago in 1836.

Boone County Quick Facts

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%
Named for : Daniel Boone
Capital : Belvidere
Establishment : January 01, 1837
Time Zone : America/Chicago
Local time : 00:21:41 (23rd January 2022)
Density : 72 Pop. per km² as of 2020
Population growth : -2.63% (2010-2020)
Weather : 10℉ Snow 7-days weather
Boone County locator map
Location of Boone County on Illinois map.
Floyd Hopkins Block '7937909994' image
Floyd Hopkins Block '7937909994'
Floyd Hopkins Block '7937909994' image


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

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


Boone County forecast: Snow after 9pm. Cloudy, with a low around 10. Northwest wind 5 to 10 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 2 inches possible. more

Boone County has 6 neighbours.


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

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People born in Boone County (2)

People born in Boone County, including politician William D. Boies, Marcus White Woods, .


Other places with the same name (8)

Illinois Other Counties (more counties)

County Name Population Title
Cook County 5,108,284 County in Illinois, United States
Chicago 2,677,643 City and county seat of Cook County, Illinois, United States
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
Markham 328,966 City in Cook County, Illinois, 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 City in Kane County, Illinois, United States
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