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DeKalb, Illinois Map and Directory


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DeKalb County, Illinois locator map According to the United States Census Bureau, DeKalb is a City that is located in DeKalb County, Illinois at 41.93 degrees North and 88.75 degrees West.  The city's time zone is America/Chicago, and the city's primary telephone area code is 815.  The land area of DeKalb is about 15.21 square miles, whereas the water area of the city is about 0.16 square miles.  DeKalb County's land area is about 631 square miles, so the city occupies about 2.4 percent of the county's total land area.

The Census Bureau estimates that DeKalb had about 42,847 residents in 2019, which is approximately 2,817 people per square mile of land area. 

According to recent American Community Survey data, the median household income in DeKalb was about $45,020 per year. 

The Illinois counties map at upper right shows DeKalb County, highlighted in red.  Use the menu below to display interactive maps of DeKalb, either in a frame on this page or in full-screen mode. 

Use the menu below to display categorized DeKalb directories. 

DeKalb Products and Services Directory

Selected DeKalb, Illinois Listings

These randomly selected DeKalb listings provide some insight into the city's cultural environment and economic climate.

Amanda's Spa & Beauty Services
  • Alternative Medicine
  • Beauty Salons
  • Hair Care & Treatment
  • Beauty & Day Spas
  • Manicures & Pedicures
Balcom -Vetillo Design
  • Advertising Agencies & Consultants
DeKalb Dental Group
  • Dentists
Diamond Tour Golf
  • Outdoor Sports & Recreation
  • Golf
  • Golf Equipment & Supplies Retail
Friendly Farms Limited
  • Zoos
Happy Wok
  • Chinese Restaurants
  • Chinese Foods
Munson Insurance Agency Inc
  • Insurance
North Central Cyclery
  • Bicycle Parts & Supplies Wholesale & Manufacturers
Northern Illinois University Libraries
  • Libraries
  • Public Libraries
Southmoor Estates Manufactured
  • Real Estate Rental & Leasing
  • Property Management
  • Rental Management Services
Tails Humane Society
  • Pet Care Services
  • Animal Shelters
  • Humane Societies
  • Radio Stations

Nearby Illinois Cities and Towns *

* Parenthesized numbers indicate economic activity levels.

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