 This includes a natural increase since the last census of 73,541 people (that is 346,968 births minus 273,427 deaths) and an increase due to net migration of 26,135 people into the state.Immigration from outside the United States resulted in a net increase of 40,051 people, and migration within the country produced a net decrease of 13,916 people., Kentucky's population included about 149,016 foreign-born persons (3.4%).