DeQuincy
- County:
- Calcasieu Parish
- County Seat:
- No
- Area (mi²):
- 3.193
- State:
- Louisiana
DeQuincy is a city located in Calcasieu Parish, Louisiana. DeQuincy has a 2026 population of 2,872. DeQuincy is currently growing at a rate of 0.45% annually but its population has decreased by -8.13% since the most recent census, which recorded a population of 3,126 in 2020.