Youthful; pledged to God
A modern American blend likely combining the name Jill, derived from the Latin Julia meaning youthful, with the suffix -isa, often drawn from Elizabeth, meaning pledged to God. It emerged in the late 20th century as a creative elaboration of classic roots.
Less common today
Jillisa isn't in the latest US Top 1000. It last peaked at #4,928 in 1991.
US births per 5-year period, 1990–present (SSA data).
