The name Colleen experienced peaks and valleys over the century. It started strong with six births in 1927 but dipped to five in 1933 before recovering with seven births in 1934. It remained steady between five to eight births from 1945 to 1960, then saw a significant rise to twelve births in 1961. The name continued to be popular throughout the '60s and '70s, peaking at fifteen births in 1985. However, it declined steadily afterwards, with as few as six births in 2005. Overall, Colleen saw a total of 330 births over this period.