Indianapolis
- County:
- Marion County
- County Seat:
- Yes
- Area (mi²):
- 361.017
- State:
- Indiana
Indianapolis is a township located in Marion County, Indiana. Indianapolis has a 2026 population of 891,484. It is also the county seat of Marion County. Indianapolis is currently growing at a rate of 0.64% annually and its population has increased by 0.48% since the most recent census, which recorded a population of 887,213 in 2020.