From the Scottish river Islay and the island of the same name — island. Pronounced EYE-la; it climbed the British charts a decade before the American ones.
Isla ranks 28th among American girls in 2025, with 6,019 born that year. Its best year was 2025, when 6,019 babies were given the name, ranking 28th. The typical living American called Isla is about 6 years old today. It is relatively most common in Hawaii, where it accounts for 0.79% of births.
Source: US Social Security Administration, national and state name files, 2025 release, and the Office for National Statistics for England and Wales. Etymology researched and written by our editors. Living-population and median-age figures are our own estimates, described in the methodology.