Northfork is a town in McDowell County, West Virginia, United States, located on U.S. Route 52 between Welch and Bluefield.

According to the United States Census Bureau, the town has a total area of 0.96 square miles (2.49 km2), all land.

At the 2010 census there were 429 people, 173 households, and 108 families living in the town.

There were 242 housing units at an average density of 252.1 per square mile (97.3/km2).

At the 2000 census there were 519 people, 229 households, and 130 families living in the town.

There were 298 housing units at an average density of 307.7 per square mile (118.8/km2).