
Port Sulphur
- County:
- Plaquemines Parish
- County Seat:
- No
- Area (mi²):
- 5.412
- State:
- Louisiana
Port Sulphur is a CDP located in Plaquemines Parish, Louisiana. Port Sulphur has a 2025 population of 1,551. Port Sulphur is currently declining at a rate of -0.89% annually and its population has decreased by -28.66% since the most recent census, which recorded a population of 2,174 in 2020.
The average household income in Port Sulphur is $68,956 with a poverty rate of 10.68%. The median age in Port Sulphur is 34.2 years: 21.9 years for males, and 48.5 years for females.