
Rio
- County:
- Martin County
- County Seat:
- No
- Area (mi²):
- 0.378
- State:
- Florida
Rio is a CDP located in Martin County, Florida. Rio has a 2025 population of 1,475. Rio is currently growing at a rate of 2.36% annually and its population has increased by 109.22% since the most recent census, which recorded a population of 705 in 2020.
The average household income in Rio is $133,149 with a poverty rate of 13.2%. The median age in Rio is 61.4 years: 66.1 years for males, and 57.8 years for females.