Karilee is of American origin, derived from the combination of 'Kari', which means 'pure' in Finnish, and 'Lee', a popular surname of English and Scottish descent. This unique moniker gained prominence during the mid-20th century, possibly influenced by other names like Karen and Lee that were popular at the time. Karilee is often associated with individuals born between 1945 and 1970, reflecting its peak popularity during those decades.
"The name Karilee appears to have been popular among parents between 1961 and 1988, with peaks in usage occurring during the mid-70s and early 80s."