Pearl River
- County:
- St. Tammany Parish
- County Seat:
- No
- Area (mi²):
- 3.733
- State:
- Louisiana
Pearl River is a town located in St. Tammany Parish, Louisiana. Pearl River has a 2026 population of 2,647. Pearl River is currently growing at a rate of 0.49% annually and its population has increased by 4.21% since the most recent census, which recorded a population of 2,540 in 2020.