Smithfield is a town in Wetzel County, West Virginia, United States.

[8] The climate in this area is characterized by hot, humid summers and generally mild to cool winters.

[9] At the 2010 census there were 145 people, 63 households, and 39 families living in the town.

The racial makeup of the town was 97.2% White, 0.7% Native American, and 2.1% from two or more races.

At the 2000 census there were 177 people, 77 households, and 49 families living in the town.

About 1.8% of families and 2.9% of the population were below the poverty line, including 43.9% of those under the age of eighteen and 13.2% of those sixty five or over.