Sallis is a town in Attala County, Mississippi, United States.

[3] By 1906, Sallis had a post-office, school, steam grist mill, and several churches.

According to the United States Census Bureau, the town has a total area of 0.4 square miles (1.0 km2), all land.

There were 23.5% of families and 24.8% of the population living below the poverty line, including 53.8% of under eighteens and 25.0% of those over 64.

The town of Sallis is served by the Attala County School District.