Back مقاطعة ديكالب (إلينوي) Arabic دکالب بؤلگهسی، ایلینوی AZB DeKalb County, Illinois BAR Дикалб (окръг, Илинойс) Bulgarian ডিকলাব কাউন্টি, ইলিনয়স BPY DeKalb Gông (Illinois) CDO Де-Калб (гуо, Иллинойс) CE DeKalb County (kondado sa Tinipong Bansa, Illinois) CEB DeKalb County, Illinois Welsh DeKalb County (Illinois) German
DeKalb County | |
|---|---|
 DeKalb County Court House, Sycamore, Illinois | |
 Seal | |
 Location within the U.S. state of Illinois | |
 Illinois's location within the U.S. | |
| Coordinates: 41°53′N 88°46′W / 41.89°N 88.77°W | |
| Country |  United States |
| State |  Illinois |
| Founded | March 4, 1837 |
| Named for | Johann de Kalb |
| Seat | Sycamore |
| Largest city | DeKalb |
| Area | |
• Total | 635 sq mi (1,640 km2) |
| • Land | 631 sq mi (1,630 km2) |
| • Water | 3.4 sq mi (9 km2) 0.5% |
| Population (2020) | |
• Total | 100,420 |
• Estimate (2023) | 100,288  |
| • Density | 160/sq mi (61/km2) |
| Time zone | UTC−6 (Central) |
| • Summer (DST) | UTC−5 (CDT) |
| Congressional districts | 11th, 14th, 16th |
| Website | www |
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.[1] Its county seat is Sycamore.[2] DeKalb County is part of the Chicago–Naperville–Elgin, IL–IN–WI Metropolitan Statistical Area.
- ^ "State & County QuickFacts". US Census Bureau. Archived from the original on June 6, 2011. Retrieved July 4, 2014.
- ^ "Find a County". National Association of Counties. Archived from the original on May 31, 2011. Retrieved June 7, 2011.