DeKalb, Illinois
DeKalb is a city in DeKalb County, Illinois, with an estimated population of 40,211 in 2023. It sits at 41.9289, -88.7464 in the America/Chicago time zone.
| Field | Value |
|---|---|
| Place name | DeKalb |
| Type | city |
| State | Illinois (IL) |
| County | DeKalb County |
| Population (2023 est.) | 40,211 |
| Land area | 17.33 sq mi (44.88 km²) |
| Coordinates | 41.9289, -88.7464 |
| Time zone | America/Chicago |
| ZIP codes | 60115 |
| Telephone area codes | 779, 815 |
ZIP codes and area codes for DeKalb
DeKalb covers 1 ZIP code: 60115. Telephone area codes serving the area: 779, 815. Browse all ZIP codes in Illinois for the full list.
Where is DeKalb?
DeKalb is located in Illinois, in DeKalb County. The coordinates above can be pasted directly into any map service. The nearest indexed places are listed below, which is a useful check when two states share a place name.
Nearby places
Cortland 5 km · ILSycamore 9 km · ILMalta 10 km · ILMaple Park 12 km · ILWaterman 18 km · ILVirgil 18 km · ILGenoa 19 km · ILCreston 19 km · IL
Other places in DeKalb County
Sycamore 18,682Sandwich 7,212Genoa 5,437Cortland 4,488Hinckley 1,971Somonauk 1,760Kirkland 1,618Waterman 1,421Malta 1,132Kingston 1,089
Related
Frequently asked questions
What county is DeKalb, IL in?
DeKalb is in DeKalb County, Illinois.
What is the population of DeKalb, IL?
The 2023 Census Bureau estimate is 40,211.
What time zone is DeKalb in?
DeKalb is in the America/Chicago time zone.