Orange City
- County:
- Sioux County
- County Seat:
- Yes
- Area (mi²):
- 4.609
- State:
- Iowa
Orange City is a city located in Sioux County, Iowa. Orange City has a 2026 population of 6,547. It is also the county seat of Sioux County. Orange City is currently growing at a rate of 0.38% annually and its population has increased by 4.27% since the most recent census, which recorded a population of 6,279 in 2020.