Inman Mills is a census-designated place (CDP) in Spartanburg County, South Carolina, United States.

According to the United States Census Bureau, the CDP has a total area of 1.3 square miles (3.4 km2), all land.

As of the census[5] of 2000, there were 1,151 people, 435 households, and 261 families residing in the CDP.

There were 464 housing units at an average density of 367.5 per square mile (141.9/km2).

37.0% of all households were made up of individuals, and 23.4% had someone living alone who was 65 years of age or older.