Silas is a town in Choctaw County, Alabama, United States. At the 2010 census the population was 452.
Silas is located in southern Choctaw County at 31°46'17.850" North, 88°19'51.568" West (31.771625, -88.330991).
According to the U.S. Census Bureau, the town has a total area of 5.2 square miles (13.5 km2), all land.
The town is located next to U.S. Route 84 near the Mississippi state line.
As of the census of 2000, there were 529 people, 220 households, and 157 families residing in the town. The population density was 100.8 people per square mile (38.9/km2). There were 260 housing units at an average density of 49.5 per square mile (19.1/km2). The racial makeup of the town was 71.83% White, 25.71% Black or African American, 0.19% from other races, and 2.27% from two or more races. 0.19% of the population were Hispanic or Latino of any race.
There were 220 households, out of which 29.5% had children under the age of 18 living with them, 55.9% were married couples living together, 15.0% had a female householder with no husband present, and 28.6% were non-families. 27.7% of all households were made up of individuals, and 8.6% had someone living alone who was 65 years of age or older. The average household size was 2.40 and the average family size was 2.94.