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Cities and Towns in the United States > State Illinois > DeKalb County
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DeKalb County, located in northern Illinois, is known for its rich history and natural beauty. The county is home to the historical Ellwood House Museum and the scenic Waterman Winery. Outdoor enthusiasts can explore the beauty of the county at the natural gems such as Shabbona Lake State Park and the Northern Illinois University's Lorado Taft Field Campus. Every year, the county hosts the Sandwich Fair, one of the oldest and largest county fairs in the state. With its charming towns, picturesque countryside, and a variety of cultural and outdoor attractions, DeKalb County offers something for everyone to enjoy.

Get the contact information for all cities and towns in this county. Find general information, official websites, email, phone numbers, addresses, and much more.

DeKalb County administration contact details

DeKalb County's address 110 E Sycamore St, Sycamore, IL 60178
County seat Sycamore
Phone number of DeKalb County (815) 895-7177
DeKalb County official website https://dekalbcounty.org
DeKalb County Clerk Douglas J. Johnson

DeKalb County, IL Sheriff's Office and Jail Information

Number of prisons1
Jail namesDeKalb County Jail
Sheriff office address150 North Main Street, Sycamore, IL 60178
Sheriff office phone number815-895-7260
Inmate search informationTo locate an inmate in DeKalb County, visit the Sheriff's Office website and use the online inmate locator tool or contact the jail directly for assistance.
Clerk of Court nameMaureen A. Josh
Clerk of Court address133 West State Street, Sycamore, IL 60178

DeKalb County (IL) Statistics

Number of cities/towns/villages 1
Population 43000 people
Area 16 sq mi
Density 2700/sq mi
Altitude 850 ft
Median Household Income $42000/year
Poverty rate 31%
Unemployment rate 6%
Educational Attainment (Bachelor's Degree or higher) 34%
Crime rate 37/1000 residents

Environmental risk in DeKalb County, IL

Overall riskRelatively Low
Expected Annual LossRelatively Low
Social VulnerabilityRelatively Moderate
Community ResilienceVery High
Avalanche RiskNot Applicable
Coastal Flooding RiskNot Applicable
Cold Wave RiskVery High
Drought RiskRelatively Low
Earthquake RiskRelatively Low

Data obtained from the FEMA National Risk Index.

counties surrounding DeKalb

Kane 17.8 milesKendall 27.4 milesLee 29.1 miles
Boone 29.8 milesOgle 30.1 milesMcHenry 33.9 miles

List of cities and towns in DeKalb County by population size

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