Waterloo, Indiana
| Waterloo, Indiana | |
|---|---|
| Location of Waterloo in DeKalb County, Indiana. | |
| Coordinates: 41°25′50″N 85°01′24″W / 41.43056°N 85.02333°W | |
| Country | United States | 
| State | Indiana | 
| County | DeKalb | 
| Township | Grant, Smithfield | 
| Area | |
|  • Total | 2.11 sq mi (5.47 km2) | 
| • Land | 2.11 sq mi (5.47 km2) | 
| • Water | 0.00 sq mi (0.00 km2) | 
| Elevation | 915 ft (279 m) | 
| Population  (2020) | |
|  • Total | 2,116 | 
| • Density | 1,002.84/sq mi (387.16/km2) | 
| Time zone | UTC-5 (Eastern (EST)) | 
| • Summer (DST) | UTC-4 (EDT) | 
| ZIP code | 46793 | 
| Area code | 260 | 
| FIPS code | 18-81278 | 
| GNIS feature ID | 2397725 | 
| Website | waterlooin | 
Waterloo is a town in Grant and Smithfield townships, DeKalb County, Indiana, United States. The population was 2,116 at the 2020 census.