Nitro
- County:
- Kanawha County
- County Seat:
- No
- Area (mi²):
- 5.345
- State:
- West Virginia
Nitro is a city located in Kanawha County, West Virginia. Nitro has a 2026 population of 6,366. Nitro is currently declining at a rate of -0.42% annually and its population has decreased by -3.55% since the most recent census, which recorded a population of 6,600 in 2020.