| Place Name | Rio |
| Place Type | Census Designated Place |
| ZIP Code(s) | 34957 34994 34996 |
| County | Martin County |
| Area Code(s) | 772 |
| Timezone | Eastern Daylight Time (EDT) |
| Population (2022) | 823 |
| Population Growth Rate (2010-19) | 1.55% |
| Majority Ethnicity | White 100% |
| Metro/Micro Stats Area | Port St. Lucie, FL |
| US Congressional District(s) | Florida 18th |
| State House Districts | 83 |
| State Senate Districts | 25 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 100% |
| African American | 0% |
| Hispanic | 0% |
| Asian | 0% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 0% |