DeKalb County, Indiana
| DeKalb County | |
|---|---|
| Location within the U.S. state of Indiana | |
| Indiana's location within the U.S. | |
| Coordinates: 41°22′01″N 85°03′32″W / 41.36694°N 85.05889°W | |
| Country | United States | 
| State | Indiana | 
| Founded | February 7, 1835 (authorized) 1837 (organized) | 
| Named after | Johann, Baron de Kalb | 
| Seat | Auburn | 
| Largest city | Auburn | 
| Area | |
|  • Total | 363.85 sq mi (942.4 km2) | 
| • Land | 362.82 sq mi (939.7 km2) | 
| • Water | 1.03 sq mi (2.7 km2) 0.28% | 
| Population  (2020) | |
|  • Total | 43,265 | 
|  • Estimate  (2023) | 44,198 | 
| • Density | 120/sq mi (46/km2) | 
| Time zone | UTC−5 (Eastern) | 
| • Summer (DST) | UTC−4 (EDT) | 
| Congressional district | 3rd | 
| Website | DeKalb County Government | 
| Indiana county number 17 | |
DeKalb County is a county in the U.S. state of Indiana. As of the 2020 United States Census, the population was 43,265. The county seat is Auburn.