In 2018, 2 is the most common age for an American (U.S.) Isla who is registered female with the Social Security Administration. It is the 4, 770th most common female first name for living U.S. citizens.
― Anonymous User 10/16/2018
4
Isla is also a modern Finnish name. Over 1100 of it's 1500 bearers were born in the past five years. The pronunciation is IS-lu, even though the name was most likely adopted from British use. Interestingly, the Scottish Isla also has a Finnish homophone, Aila, which was vastly popular for half a century, starting from the 1920s.