Harrisville, Mississippi is a small unincorporated community located south of Florence, Mississippi, about 25 miles from the state capital, Jackson. Located in Simpson County, Mississippi, Harrisville sits mainly at the junction between Highway 469, which connects to Florence and Pinola, and Highway 540, which connects to D'Lo. The community is part of the Jackson Metropolitan Statistical Area. The two main churches are the Harrisville United Methodist Church and the Harrisville Baptist Church.