DeKalb Population 2026
DeKalb has a population of 43,211, making it the #1018 biggest city in 🇺🇸 United States, located in Illinois. It is about 204× smaller than New York City, the country's biggest city.
Population (city proper)
43,211
Rank in United States
#1018
Coordinates
41.93°N, 88.75°W
~268 m elevation · America/Chicago
Distance to capital (Washington)
1,047 km
650 miles, straight line
Other big cities in Illinois
| City | Population | Rank in United States |
|---|---|---|
| Chicago | 2,664,452 | #3 |
| Aurora | 200,661 | #125 |
| Rockford | 148,278 | #184 |
| Joliet | 147,861 | #186 |
| Naperville | 147,100 | #190 |
| Peoria | 115,070 | #259 |
| Springfield | 114,394 | #262 |
| North Peoria | 113,004 | #266 |
Cities near DeKalb
FAQ
What is the population of DeKalb?
DeKalb has a population of 43,211 (city proper, latest official figure via GeoNames), making it the #1018 biggest city in United States.
What state is DeKalb in?
DeKalb is located in Illinois, United States.
Is DeKalb the capital of United States?
No, the capital of United States is Washington D.C., about 1,047 km away.
Sources & notes
Population refers to the city proper (municipal boundaries), not the metropolitan area. Source: GeoNames (CC BY 4.0), retrieved 2026-07-07. Country data: UN World Population Prospects 2024.
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