Clay County , Illinois

Clay County: County in Illinois, United States

About

Clay County is a county located in the U.S. state of Illinois. As of the 2010 census, the population was 13,815 and a population density of 11 people per km². After 10 years in 2020 county had an estimated population of 13,079 inhabitants. Its county seat is Louisville. The county was created 198 years ago in 1823.

Clay County Quick Facts

Population : 13,079 (2020)
Country : United States of America
State : Illinois (United States)
Different from : Clay County, Clay County, Clay County, Clay County, Clay County, Clay County, Clay County, Clay County, Clay County, Clay County, Clay County, Clay County, Clay County, Clay County, Clay County, Clay County, Clay County
Area : 1217 km2
Water as percent of area : 0.3%
Land as percent of area : 99.7%
Named for : Henry Clay
Capital : Louisville
Establishment : January 01, 1824
Time Zone : America/Chicago
Local time : 23:30:07 (18th January 2022)
Density : 11 Pop. per km² as of 2020
Population growth : -5.63% (2010-2020)
Clay County locator map
Location of Clay County on Illinois map.
Map of Illinois highlighting Clay County locator map image
Map of Illinois highlighting Clay County
Map of Illinois highlighting Clay County locator map image

Geography

Clay County is located at 38°45'15"N 88°29'25"W (38.7541600, -88.4901900). It has 4 neighbors: Fayette County, Jasper County, Marion County and Wayne County.

Clay County map

The largest city of Clay County is Flora with a population of 4,831. Other cities include and Sailor Springs population 91. See all Clay County cities & populated places.

Clay County Populated Places

Cities, Towns, Neighborhoods & Other Populated Places in Clay County.

City Name Population Title
Flora 4,831 City in Illinois
Louisville 1,087 Village in Illinois
Clay City 898 Township in Clay County, Illinois
Xenia 371 Village in Clay County, Illinois
Bible Grove 320 Township in Clay County, Illinois
Hoosier 313 Township in Clay County, Illinois
Oskaloosa 308 Township in Clay County, Illinois
Iola 134 Village in Illinois, USA
Sailor Springs 91 Human settlement in Illinois, United States of America

Clay County has 4 neighbours.

Demographics

According to census records, the population of Clay County decreased by 5.63% in 10 years.

Year Population % Change Method
2010 13,815 - census
2011 13,725 -0.66% estimation process
2012 13,714 -0.08% estimation process
2013 13,554 -1.18% estimation process
2014 13,445 -0.81% estimation process
2015 13,401 -0.33% estimation process
2016 13,314 -0.65% estimation process
2017 13,270 -0.33% estimation process
2018 13,266 -0.03% estimation process
2019 13,184 -0.62% estimation process
2020 13,079 -0.8% estimation process

Clay, Clay Comitatus, Clay Kun, Clay Kūn, Clay konderria, Clay megye, Comitatul Clay, Comte de Clay, Comté de Clay, Condado de Clay, Condado han Clay, Contea di Clay, Hrabstwo Clay, Klej, Okrug Klej, Quan Clay, Quận Clay, ke lai xian, kle ka'unti, kurei jun, mqatʿt klay, shhrstan kly aylynwy, Клей, Округ Клеј, Քլեյ շրջան, شهرستان کلی، ایلینوی, مقاطعة كلاي, کلے کاؤنٹی، الینوائے, کلے کاؤنٹی، الینوۓ, ক্লে কাউন্টি, クレイ郡, 克莱县

People born in Clay County (1)

novelist David Niall Wilson was born in Clay County

Other places with the same name (18)

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