Arcadia is an unincorporated community located in Sullivan County, Tennessee, just outside Kingsport's eastern city limits.

Arcadia is listed in the National Register of Historic Places which includes the Thomas Fain Plantation.

In 1770, the "Treaty of Lochaber" established new boundaries between the Native American lands and the settlers.

One of his sons, Captain Samuel Brashears, also participated in the American Revolution and the "Indian Wars of the frontier."

[8] In the mid-1800s there were five major plantation owners in Arcadia who were successful farmers, stock dealers, and financiers.

Fain also built a store along Reedy Creek Road in front of his house which also served as the area's post office in 1846.