File:DeKalb_County_Courthouse2.jpg · Wikimedia Commons · See Wikimedia Commons
DeKalb County
Sign in to saveAlso known as DeKalb County, Illinois, De Kalb County, De Kalb County, Illinois, DeKalb County, IL
county in Illinois, United States
Key facts
- Country
- United States
- State
- Illinois
- Founded
- March 4, 1837
- Named after
- Johann de Kalb
- Seat
- Sycamore
- Largest city
- DeKalb
- Total
- 635 sq mi (1,640 km )
- Land
- 631 sq mi (1,630 km )
- Water
- 3.4 sq mi (8.8 km ) 0.5%
- Estimate 2025
- 101,835
- Density
- 159/sq mi (61.4/km )
- Time zone
- UTC−6 ( Central )
- Summer dst
- UTC−5 ( CDT )
- Congressional districts
- 11th , 14th , 16th
- Website
- www .dekalbcounty .org
via Wikipedia infobox
Wikidata facts
- Population
- 100420
- Area
- 1645
- Official website
- dekalbcounty.org
- Image
- Sycamore Dek cty gov leg center.jpg
- Households
- 38616
Show 5 more facts
- Commons category
- DeKalb County, Illinois
- inception
- 1837-03-04
- water as percent of area
- 0.5
- native label
- DeKalb County
- per capita income
- 29780
Sources (8)
via Wikidata · CC0
~11 min read
Article
DeKalb County is a county located in the U.S. state of Illinois. As of the 2020 United States census, the population was 100,420. Its county seat is Sycamore. DeKalb County is part of the Chicago–Naperville–Elgin, IL–IN–WI Metropolitan Statistical Area.
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On the map
2 mapped locations
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