Grundy Center
- County:
- Grundy County
- County Seat:
- Yes
- Area (mi²):
- 2.57
- State:
- Iowa
Grundy Center is a city located in Grundy County, Iowa. Grundy Center has a 2026 population of 2,821. It is also the county seat of Grundy County. Grundy Center is currently growing at a rate of 0.28% annually and its population has increased by 0.39% since the most recent census, which recorded a population of 2,810 in 2020.