Marcus
- County:
- Cherokee County
- County Seat:
- No
- Area (mi²):
- 1.529
- State:
- Iowa
Marcus is a city located in Cherokee County, Iowa. Marcus has a 2026 population of 1,069. Marcus is currently growing at a rate of 0.47% annually but its population has decreased by -0.65% since the most recent census, which recorded a population of 1,076 in 2020.