DeKalb County's Legislative Center
Location within the U.S. state of Illinois
Illinois's location within the U.S.
|Founded||4 March 1837|
|Named for||Johann de Kalb|
|• Total||635 sq mi (1,640 km2)|
|• Land||631 sq mi (1,630 km2)|
|• Water||3.4 sq mi (9 km2) 0.5%|
| • Estimate |
|• Density||170/sq mi (64/km2)|
|Time zone||UTC−6 (Central)|
|• Summer (DST)||UTC−5 (CDT)|
|Congressional districts||14th, 16th|
DeKalb County is a county located in the U.S. state of Illinois. As of the 2010 United States Census, the population was 105,160.Its county seat is Sycamore.
DeKalb County is part of the Chicago-Naperville-Elgin, IL-IN-WI Metropolitan Statistical Area.
DeKalb County was formed on 4 March 1837,out of Kane County, Illinois. The County was named for Johann de Kalb, a German (Bavarian) hero of the American Revolutionary War. DeKalb County's area is approximately 632.7 square miles, located 63 miles west of Chicago. There are 19 townships in the county with the county seat at Sycamore.
Between 1834 and 1837, white men began to settle in DeKalb County along the streams and wooded areas because of the fertile soil, wild game, and food and water opportunities. Major growth stemmed from the introduction of the railroad which brought easier methods of transportation and opportunities for industrial growth. Early industries based in DeKalb County included Sandwich Mfg. Co, Marsh Harvester Co, Barbed Wire, and Gurler Bros Pure Milk Co.
The county is noted for agriculture. In 1852, the DeKalb Agricultural Society produced the county's first Agricultural Fair, in Sycamore. Eventually farmers, businessmen, bankers and newspapermen organized to become the DeKalb County Soil Improvement Association, which later was split into DeKalb County Farm Bureau and DeKalb Agricultural Association (DEKALB AgResearch, Inc., Monsanto). DeKalb County is credited with being the birthplace of the Farm Bureau movement. DeKalb County is also the 2nd largest hog producing county in Illinois and the 66th largest in the nation.
Education has played an important role in the area with Northern Illinois University located in DeKalb and Kishwaukee Community College located in Malta. A major fair has been held each year since 1887 at the Sandwich Fairgrounds in Sandwich.
Unlike similarly spelled locations, such as DeKalb County, Georgia, DeKalb denizens from Illinois pronounce the county name // di-KALB, with an L sound, as in German.
According to the US Census Bureau, the county has a total area of 635 square miles (1,640 km2), of which 631 square miles (1,630 km2) is land and 3.4 square miles (8.8 km2) (0.5%) is water.
|Climate chart (explanation)|
In recent years, average temperatures in the county seat of Sycamore have ranged from a low of 10 °F (−12 °C) in January to a high of 84 °F (29 °C) in July, although a record low of −27 °F (−33 °C) was recorded in January 1985 and a record high of 103 °F (39 °C) was recorded in August 1988. Average monthly precipitation ranged from 1.40 inches (36 mm) in February to 4.49 inches (114 mm) in June.
|US Decennial Census |
As of the 2010 United States Census, there were 105,160 people, 38,484 households, and 23,781 families residing in the county. The population density was 166.6 inhabitants per square mile (64.3/km2). There were 41,079 housing units at an average density of 65.1 per square mile (25.1/km2). The racial makeup of the county was 85.1% white, 6.4% black or African American, 2.3% Asian, 0.3% American Indian, 3.9% from other races, and 2.0% from two or more races. Those of Hispanic or Latino origin made up 10.1% of the population. In terms of ancestry, 32.6% were German, 17.5% were Irish, 8.7% were English, 7.0% were Polish, 6.4% were Italian, 6.3% were Swedish, and 3.8% were American.
Of the 38,484 households, 31.9% had children under the age of 18 living with them, 47.2% were married couples living together, 10.2% had a female householder with no husband present, 38.2% were non-families, and 25.8% of all households were made up of individuals. The average household size was 2.56 and the average family size was 3.11. The median age was 29.3 years.
The median income for a household in the county was $54,002 and the median income for a family was $70,713. Males had a median income of $50,192 versus $35,246 for females. The per capita income for the county was $24,179. About 7.7% of families and 14.6% of the population were below the poverty line, including 13.2% of those under age 18 and 4.5% of those age 65 or over.
As part of Northern Illinois, DeKalb County was a stronghold for the Free Soil Party in its early elections – being among nine Illinois counties to support Martin Van Buren in 1848 – and became overwhelmingly Republican for the century following that party's formation. The only time it did not back the official GOP nominee between 1856 and 1988 was in 1912 when the Republican Party was mortally divided and Progressive Theodore Roosevelt won almost half the county's vote. Republican candidate Alf Landon, who lost 46 of 48 states in 1936, won DeKalb County by double digits, whilst even Barry Goldwater – renowned for his antagonism towards the establishment – won by seven percent despite losing sixteen percent of the vote compared to Richard Nixon in 1960.
Beginning in 1992, DeKalb County has shown a strong trend towards the Democratic Party owing to the growth of its powerfully Democratic student population. In that year's election George McGovern, who was to lose all but 130 counties nationwide, managed to exceed his nationwide vote percentage in this county that had not voted Democratic since giving a plurality to Franklin Pierce in 1852. In 1980, Illinois native John B. Anderson won over fifteen percent of the county's vote and this was to shift towards the Democratic Party in subsequent elections. In 1992 and 1996, Bill Clinton became the first Democrat to carry the county in 140 years, and in 2008 another Illinois son, Barack Obama, became the first Democrat to win an absolute majority since Van Buren in the county's first-ever Presidential election of 1840. Obama repeated this in 2012, but economic concerns in the rust belt caused a sizeable swing away from Hillary Clinton in 2016, although she still narrowly won the county.
DeKalb County is a county located in the northeastern part of the U.S. state of Alabama. As of the 2010 census, the population was 71,109. Its county seat is Fort Payne, and it is named after Major General Baron Johan DeKalb. DeKalb County is part of the Huntsville-Decatur-Albertville, AL Combined Statistical Area.
Union County is a county located in the U.S. state of Illinois. According to the 2010 United States Census, it had a population of 17,808. Its county seat is Jonesboro. It is located in the southern portion of Illinois known locally as "Little Egypt".
Schuyler County is a county in the U.S. state of Illinois. According to the 2010 census, it had a population of 7,544. Its county seat is Rushville.
Sangamon County is a county located in the center of the U.S. state of Illinois. According to the 2010 census, it had a population of 197,465. Its county seat and largest city is Springfield, the state capital.
Piatt County is a county in Illinois. According to the 2010 United States Census, it had a population of 16,729. Its county seat is Monticello.
Ogle County is a county located in the U.S. state of Illinois. According to the 2010 United States Census, it had a population of 53,497. Its county seat is Oregon, and its largest city is Rochelle.
Lee County is a county located in the U.S. state of Illinois. According to the 2010 census, it has a population of 36,031. Its county seat is Dixon.
LaSalle County is located in the North Central region of the U.S. state of Illinois; it has an estimated population of 109,430 as of 2018 and its county seat and largest city is Ottawa.
Kankakee County is a county located in the U.S. state of Illinois. According to the 2010 census, it has a population of 113,449. Its county seat is Kankakee.
Douglas County is a county located in the U.S. state of Illinois. As of the 2010 United States Census, the population was 19,980. The county seat is Tuscola.
Cass County is a county located in the U.S. state of Illinois. As of the 2010 United States Census, the population was 13,642. Its county seat is Virginia. It is the home of the Jim Edgar Panther Creek State Fish and Wildlife Area. Cass County's official website can be found at https://co.cass.il.us/.
Bureau County is a county located in the U.S. state of Illinois. As of the 2010 United States Census, the population was 34,978. Its county seat is Princeton.
Sandwich is a city in DeKalb and Kendall counties in the U.S. state of Illinois. The population was 7,421 at the 2010 census.
Shabbona is a village in DeKalb County, Illinois, United States. The population was 925 at the 2010 census, down from 929 at the 2000 census.
Somonauk is a village in DeKalb and LaSalle Counties in the U.S. state of Illinois. The population was 1,893 at the 2010 Census.
Sycamore is a city in DeKalb County, Illinois, United States. It has a commercial district based and centered on Illinois Route 64. The population was 17,519 at the 2010 census, up from 12,020 in 2000. Sycamore is the county seat of DeKalb County and was named after the sycamore tree.
Sandwich Township is one of nineteen townships in DeKalb County, Illinois, USA. As of the 2010 census, its population was 7,709 and it contained 3,005 housing units. Sandwich Township was formed from a portion of Somonauk Township on July 14, 1896.
Shabbona Township is one of nineteen townships in DeKalb County, Illinois, USA. As of the 2010 census, its population was 1,453 and it contained 603 housing units. The township contains the Chief Shabbona Forest Preserve and Shabbona Lake State Park.
Somonauk Township is one of nineteen townships in DeKalb County, Illinois, USA. As of the 2010 census, its population was 2,101 and it contained 831 housing units.
DeKalb County is a county located in the U.S. state of Indiana. As of 2010, the population was 42,223. The county seat is Auburn. Named for Revolutionary War hero Johann, Baron de Kalb (1721–1780), the county was created by the Indiana legislature in 1835 and organized in 1837.