Cotton Valley
- County:
- Webster Parish
- County Seat:
- No
- Area (mi²):
- 2.632
- State:
- Louisiana
Cotton Valley is a town located in Webster Parish, Louisiana. Cotton Valley has a 2026 population of 747. Cotton Valley is currently declining at a rate of -0.93% annually and its population has decreased by -5.2% since the most recent census, which recorded a population of 788 in 2020.