Keystone
- County:
- McDowell County
- County Seat:
- No
- Area (mi²):
- 0.324
- State:
- West Virginia
Keystone is a city located in McDowell County, West Virginia. Keystone has a 2026 population of 153. Keystone is currently declining at a rate of -1.92% annually and its population has decreased by -11.56% since the most recent census, which recorded a population of 173 in 2020.
The median household income in Keystone is $21,618 with a poverty rate of 56.41%. The median age in Keystone is 45.1 years: 62.6 years for males, and 30.7 years for females. For every 100 females there are 34.5 males.