Mason is located along U.S. Route 70, and is home to a federal detention facility.

[5] Trinity Church in Mason, built in 1870, was designed by English architect James B. Cook and is listed on the National Register of Historic Places.

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

As of the 2020 United States census, there were 1,337 people, 339 households, and 246 families residing in the town.

23.8% of all households were made up of individuals, and 10.5% had someone living alone who was 65 years of age or older.