Kacee is of American origin, derived from the feminine form of Casey, which is an Irish surname meaning 'vigorous' or 'alert'. It gained popularity in the United States during the late 20th century.
The name Kacee peaked in popularity between the late 1970s and early 1980s, with the highest number of births recorded in 1987 (80 births). However, since the mid-1990s, its usage has significantly declined, with less than 50 births per year from 1996 onwards. In recent years, it has become quite rare, with only 10 births recorded in 2022.