Rienzi
- County:
- Alcorn County
- County Seat:
- No
- Area (mi²):
- 0.99
- State:
- Mississippi
Rienzi is a town located in Alcorn County, Mississippi. Rienzi has a 2026 population of 274. Rienzi is currently growing at a rate of 0.37% annually but its population has decreased by -1.79% since the most recent census, which recorded a population of 279 in 2020.