DeKalb County, Illinois
DeKalb County: County in Illinois, United States
About
DeKalb County is a county located in the U.S. state of Illinois. As of the 2010 census, the population was 105,160 and a population density of 64 people per km². After 10 years in 2020 county had an estimated population of 104,491 inhabitants. Its county seat is Sycamore. The county was created 187 years ago in 1837.
![DeKalb County locator map](https://cdn.mapsof.net/images/489/4889554/dekalb-county-il-locator-map-image_188612.png)
Quick Facts about DeKalb County
Population : | 104,491 (2020) |
Country : | United States of America |
State : | Illinois (United States) |
Different from : | DeKalb County, DeKalb County, DeKalb County, DeKalb County, DeKalb County |
Area : | 1645 km2 |
Water as percent of area : | 0.5% |
Land as percent of area : | 99.5% |
Named for : | Johann de Kalb |
Capital : | Sycamore |
Establishment : | March 03, 1837 |
Time Zone : | America/Chicago |
Local time : | 2/17/2025 - 4:38:05 PM |
Density : | 64 Pop. per km² as of 2020 |
Population growth : | -0.64% (2010-2020) |
![Sycamore Dek cty gov leg center image](https://cdn.mapsof.net/images/489/4889554/dekalb-county-il-image_65633.jpg)
![Sycamore Dek cty gov leg center image](https://cdn.mapsof.net/images/489/4889554/dekalb-county-il-image_65633.jpg)
Geography
DeKalb County is located at 41°53'37"N 88°46'13"W (41.8935300, -88.7703100). It has 6 neighbors: Boone County, La Salle County, Lee County, McHenry County, Ogle County and Winnebago County.
DeKalb County map
The largest city of DeKalb County is DeKalb with a population of 42,621. Other cities include, Sycamore population 18,317, Genoa population 5,251, Hinckley population 2,042 and Somonauk population 1,860. See all DeKalb County cities & populated places.
DeKalb County Populated Places
Cities, towns, neighborhoods & other populated places in DeKalb County.
City Name | Population | Title |
---|---|---|
DeKalb | 42,621 | The county seat of DeKalb County, Illinois. |
Sycamore | 18,317 | City in Illinois |
Sandwich | 7,384 | Town in DeKalb, Kendall, and LaSalle counties, Illinois, United States |
Genoa | 5,251 | City in DeKalb County, Illinois, United States |
Cortland | 4,393 | Township in DeKalb County, Illinois |
Hinckley | 2,042 | Illinois |
Somonauk | 1,860 | City in Illinois, United States of America |
Kirkland | 1,717 | Village in DeKalb County, Illinois, United States |
Waterman | 1,497 | Human settlement in Illinois, United States of America |
Malta | 1,161 | Village in Illinois, US |
Shabbona | 913 | Township in DeKalb County, Illinois |
- Official Website
Official website of DeKalb County
DeKalb County has 6 neighbours.
- Boone County county in Illinois, United States
- LaSalle County county in Illinois, United States
- Lee County county in Illinois, United States
- McHenry County county in Illinois, United States
- Ogle County county in Illinois, United States
- Winnebago County county in Illinois, United States
Demographics
According to census records, the population of DeKalb County decreased by 0.64% in 10 years.
Year | Population | % Change | Method |
2010 | 105,160 | - | census |
2011 | 104,450 | -0.68% | estimation process |
2012 | 104,365 | -0.08% | estimation process |
2013 | 104,202 | -0.16% | estimation process |
2014 | 104,560 | 0.34% | estimation process |
2015 | 104,195 | -0.35% | estimation process |
2016 | 104,080 | -0.11% | estimation process |
2017 | 104,309 | 0.22% | estimation process |
2018 | 104,349 | 0.04% | estimation process |
2019 | 104,897 | 0.52% | estimation process |
2020 | 104,491 | -0.39% | estimation process |
People born in DeKalb County (2)
People born in DeKalb County, including baseball player Ernie Burch, Maria Straub Temperance movement and hymnal songwriter. 1838-1898 Born in Butler Township, De Kalb County, Indiana Needs Vote Maria Straub, .
List
Other places with the same name (6)
- DeKalb County , Georgia county in Georgia, United States with a population of 762,009 people.
- DeKalb County , Alabama county in Alabama, United States with a population of 71,658 people.
- DeKalb County , Indiana county in Indiana, United States with a population of 43,670 people.
- DeKalb County , Tennessee county in Tennessee, United States with a population of 20,837 people.
- DeKalb County , Missouri county in Missouri, United States with a population of 10,944 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. |