Caroleen is of English origin, derived from the Latin 'Carolus', meaning 'strong' or 'freeholder', and the diminutive suffix '-een'. It was popularized in the 20th century as a feminine variant of Carol, which itself evolved from the male name Charles. Caroleen reached its peak popularity during the mid-20th century but has since become less common. Today, it is still a unique and distinctive given name.
Caroleen was a relatively popular name during the mid-20th century, with most births occurring between 1933 and 1954. The highest number of births recorded in any single year was 15, which happened twice (1936 and 1938). There's a notable gap from 1956 to 2006 without any reported births for this name.