Mullins is a city in Marion County, South Carolina, United States.

In 1894, the growth and sale of tobacco sparked the further development of the city of Mullins.

Mullins' first school was established in 1872, which was attended by boys and girls from the town, nearby rural areas, and neighboring counties.

Mullins High School was built in 1923 on North Park Street where it stood until burning in 1976.

The original Palmetto School for Negroes (High and Elementary) was built on Cypress Street in 1919 and around 1956 was split up.

The Palmetto High School was built on O'Neal Street with 1970 being the last graduating class.

The current library, located at the corner of N. Main and Wine Streets, was built in 1940.

Olive Baptist Church, Mullins Commercial Historic District, Neal and Dixon's Warehouse, Old Brick Warehouse, Rasor and Clardy Company Building, and J.C. Teasley House are listed on the National Register of Historic Places.

[6] According to the United States Census Bureau, the city has a total area of 3.0 square miles (7.8 km2), all land.

As of the 2020 United States census, there were 4,026 people, 1,535 households, and 930 families residing in the city.