The following is a summary of acts which authorized boundary changes for Unicoi County.
- Public Acts of 1877, Chapter 48, provided that the lines between Washington County and Unicoi County be established by the surveyor of Washington County.
- Public Acts of 1881, Chapter 147, changed the boundary line between the counties of Washington and Unicoi so as to place the farms of James E. Deakins, A. E. Jackson and James Luttrell in Washington County.