DeKalb County, Illinois


DeKalb County, Illinois
DeKalb County, Illinois
Seal of DeKalb County, Illinois
Seal
Map of Illinois highlighting DeKalb County
Location in the state of Illinois
Map of the U.S. highlighting Illinois
Illinois's location in the U.S.
Founded 1836
Seat Sycamore
Area
 - Total
 - Land
 - Water

634.66 sq mi (1,644 km²)
631.31 sq mi (1,635 km²)
3.35 sq mi (9 km²), 0.53%
Population
 - (2010)
 - Density

105,160
140/sq mi (54/km²)
Website www.dekalbcounty.org

DeKalb County is a county located in the U.S. state of Illinois. According to the 2010 census, it has a population of 105,160, which is an increase of 18.2% from 88,969 in 2000.[1] Its county seat is Sycamore.[2] DeKalb County is part of the Chicago metropolitan statistical area.

Contents

History

DeKalb County was formed in 1837 out of Kane County, Illinois. The County was named in honor of Johann de Kalb, a German (Bavarian) hero of the American Revolutionary War. Kalb was with Gen. Washington at Valley Forge. He was killed at the Battle of Camden.

Pronunciation

Unlike similarly spelled locations, such as DeKalb County, Georgia, DeKalb denizens from Illinois pronounce the county name /dɨˈkælb/ "di-KALB", with an L sound, as opposed to a silent "L."

Geography

According to the 2010 census, the county has a total area of 634.66 square miles (1,643.8 km2), of which 631.31 square miles (1,635.1 km2) (or 99.47%) is land and 3.35 square miles (8.7 km2) (or 0.53%) is water.[3]

Adjacent counties

Major highways

Townships

DeKalb County's Legislative Center.

DeKalb County is divided into nineteen townships:

Cities and towns

Political districts

  • Note: Illinois was redistricted in 2011 as a result of the loss of a Congressional seat (IL went from holding 19 to 18). Prior to redistricting DeKalb was represented by House Districts: 69 and 70; Senate District: 35; and Congressional District: 14

Demographics

DeKalb County
Population by year

2010 - 105,160
2000 - 88,969
1990 - 77,932
1980 - 74,624
1970 - 71,654
1960 - 51,714
1950 - 40,781
1940 - 34,388
1930 - 32,644
1920 - 31,339
1910 - 33,457
1900 - 31,756
1890 - 27,066
1880 - 26,768
1870 - 23,265
1860 - 19,086
1850 - 7,540
1840 - 1,697

2000 census age pyramid for DeKalb County.

As of the census[4] of 2000, there were 88,969 people, 31,674 households, and 19,954 families residing in the county. The population density was 140 people per square mile (54/km²). There were 32,988 housing units at an average density of 52 per square mile (20/km²). The racial makeup of the county was 88.46% White, 4.59% Black or African American, 0.22% Native American, 2.35% Asian, 0.07% Pacific Islander, 2.74% from other races, and 1.57% from two or more races. 6.55% of the population were Hispanic or Latino of any race. 25.6% were of German, 10.8% Irish, 7.2% English, 5.9% American and 5.0% Norwegian ancestry according to Census 2000. 90.8% spoke English and 5.7% Spanish as their first language.

There were 31,674 households out of which 32.50% had children under the age of 18 living with them, 50.90% were married couples living together, 8.50% had a female householder with no husband present, and 37.00% were non-families. 25.50% of all households were made up of individuals and 7.90% had someone living alone who was 65 years of age or older. The average household size was 2.56 and the average family size was 3.11.

In the county the population was spread out with 23.10% under the age of 18, 22.00% from 18 to 24, 27.60% from 25 to 44, 17.40% from 45 to 64, and 9.80% who were 65 years of age or older. The median age was 28 years. For every 100 females there were 98.20 males. For every 100 females age 18 and over, there were 96.50 males.

The median income for a household in the county was $45,828, and the median income for a family was $58,194. Males had a median income of $41,111 versus $26,690 for females. The per capita income for the county was $19,462. About 5.10% of families and 11.40% of the population were below the poverty line, including 7.10% of those under age 18 and 4.50% of those age 65 or over.

Climate and weather

Sycamore, Illinois
Climate chart (explanation)
J F M A M J J A S O N D
 
 
1.5
 
27
10
 
 
1.4
 
32
16
 
 
2.5
 
44
26
 
 
3.5
 
58
37
 
 
4.2
 
70
48
 
 
4.5
 
80
58
 
 
4.2
 
84
63
 
 
4.5
 
81
61
 
 
3.5
 
74
51
 
 
2.6
 
62
40
 
 
2.8
 
45
28
 
 
2.1
 
32
17
Average max. and min. temperatures in °F
Precipitation totals in inches
Source: The Weather Channel[5]

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.[5]

See also

References

  1. ^ "DeKalb County QuickFacts". United States Census Bureau. http://quickfacts.census.gov/qfd/states/17/17037.html. Retrieved 2011-11-05. 
  2. ^ "Find a County". National Association of Counties. http://www.naco.org/Counties/Pages/FindACounty.aspx. Retrieved 2011-06-07. 
  3. ^ "Census 2010 U.S. Gazetteer Files: Counties". United States Census. http://www.census.gov/geo/www/gazetteer/files/Gaz_counties_national.txt. Retrieved 2011-11-05. 
  4. ^ "American FactFinder". United States Census Bureau. http://factfinder.census.gov. Retrieved 2008-01-31. 
  5. ^ a b "Monthly Averages for Sycamore, Illinois". The Weather Channel. http://www.weather.com/weather/wxclimatology/monthly/graph/USIL1144. Retrieved 2011-01-27. 

Further reading

External links

Coordinates: 41°53′N 88°46′W / 41.89°N 88.77°W / 41.89; -88.77


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