
Red Oak
- County:
- Montgomery County
- County Seat:
- Yes
- Area (mi²):
- 3.926
- State:
- Iowa
Red Oak is a city located in Montgomery County, Iowa. Red Oak has a 2025 population of 5,371. It is also the county seat of Montgomery County. Red Oak is currently declining at a rate of -0.83% annually and its population has decreased by -4% since the most recent census, which recorded a population of 5,595 in 2020.
The average household income in Red Oak is $66,792 with a poverty rate of 16.46%. The median age in Red Oak is 39.7 years: 40.4 years for males, and 39.2 years for females.