Plaquemine
- County:
- Iberville Parish
- County Seat:
- No
- Area (mi²):
- 2.923
- State:
- Louisiana
Plaquemine is a city located in Iberville Parish, Louisiana. Plaquemine has a 2026 population of 5,985. Plaquemine is currently declining at a rate of -1.03% annually and its population has decreased by -3.82% since the most recent census, which recorded a population of 6,223 in 2020.