DeKalb County
Sign in to savecounty 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
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.
History