Illinois Voter Check

DeKalb County, Illinois

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DeKalb County, Illinois
Sycamore Dek cty gov leg center — CC BY 2.5, Andy McMurray · source

About DeKalb County

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.

Description adapted from Wikipedia, CC BY-SA 4.0.

DeKalb County at a glance

County seat
Sycamore
Population
100,420 (2020)
Land area
635 sq mi
Founded
1837

Largest communities in DeKalb County

  1. DeKalb Township42,677
  2. DeKalb40,290
  3. Sycamore County seat18,577
  4. Sycamore Township14,702
  5. Cortland Township11,244

History of DeKalb County

DeKalb County was formed on March 4, 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, and it is located 63 miles west of Chicago. There are 19 townships in the county; the county seat is Sycamore. Between 1834 and 1837, after the Potawatomi people had been pushed out, European Americans formed settlements in DeKalb County along streams and wooded areas due to fertile soil, wild game, and food and water opportunities. Primary 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.

Adapted from Wikipedia, CC BY-SA 4.0.

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  1. 01

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  2. 02

    Ask DeKalb County directly

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Official channels

DeKalb County election resources

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Part of Illinois Voter Check

This is the DeKalb County page of Illinois Voter Check, a project of True the Vote, pointing Illinois voters at the official tools that already exist — and at Scan Check Protect to verify your registration.

Where anything here differs from what DeKalb County or the Illinois State Board of Elections publishes, they are right and this page is not.