Students find the following Kentucky state facts in this printble: Kentucky state abbreviation: KY. Kentucky state census region: East South Central. Kentucky state area (sq miles): 40,408. Kentucky state capital: Frankfort. Kentucky state population: 4,339,367. Kentucky state motto: English: United we stand, divided we fall. (Latin, "Let us be grateful to God"; adopted in 2002). Kentucky state song: State song: "My Old Kentucky Home". Kentucky state bird: Northern cardinal. Kentucky state flower: Goldenrod. Kentucky state tree: Tulip-tree. Kentucky state insect: Viceroy butterfly. Kentucky state mammal: Gray squirrel (1968) - land mammal.