Sac City
- County:
- Sac County
- County Seat:
- Yes
- Area (mi²):
- 4.896
- State:
- Iowa
Sac City is a city located in Sac County, Iowa. Sac City has a 2026 population of 1,992. It is also the county seat of Sac County. Sac City is currently declining at a rate of -1.09% annually and its population has decreased by -3.11% since the most recent census, which recorded a population of 2,056 in 2020.