Delaware County, Indiana
| Delaware County | |
|---|---|
| Delaware County Building | |
| Location within the U.S. state of Indiana | |
| Indiana's location within the U.S. | |
| Coordinates: 40°14′N 85°24′W / 40.23°N 85.4°W | |
| Country | United States | 
| State | Indiana | 
| Founded | 1820 (created) 1827 (organized) | 
| Seat | Muncie | 
| Largest city | Muncie | 
| Area | |
|  • Total | 395.91 sq mi (1,025.4 km2) | 
| • Land | 392.12 sq mi (1,015.6 km2) | 
| • Water | 3.78 sq mi (9.8 km2) 0.95% | 
| Population  (2020) | |
|  • Total | 111,903 | 
|  • Estimate  (2025) | 112,637 | 
| • Density | 280/sq mi (110/km2) | 
| Time zone | UTC−5 (Eastern) | 
| • Summer (DST) | UTC−4 (EDT) | 
| Congressional district | 6th | 
| Website | www | 
| Indiana county number 18 | |
Delaware County is a county in the east central portion of the U.S. state of Indiana. As of 2020, the population was 111,903. The county seat is Muncie.
Delaware County is part of the Muncie metropolitan statistical area, which is part of the larger Indianapolis-Carmel-Muncie CSA.