Thomas Lincoln moved his family, including seven-year-old Abraham, from Kentucky to Indiana in 1816. That was the same year Indiana became a state.
The term “Hoosiers” later became a nickname for all the people of Indiana. But some historians believe “Hoosiers” was originally a derogatory term for people from southern back country, like the Lincolns.
Source: What Hath God Wrought by Daniel Walker Howe