The name reached its all-time peak in 2004 with 47 births ranking #2400. FALLING Recent data shows the name is currently falling.
Kaylee is a cheerful modern name with a soft, familiar sound. It is usually treated as a contemporary formation rather than a single old traditional name.
The name gained ground in the late twentieth century alongside many -lee and -ley ending names. Its popularity reflects the appeal of friendly, easy-to-say modern spellings.