Modern invented name, likely a blend of Jane and Hailey.
Jailey is a contemporary American creation, likely formed by combining the prefix 'Jai-' with the popular suffix '-ley'. It follows the phonetic trends of names like Bailey and Kailey while incorporating the 'J' initial common in names like Jada or Jane.
US births per 5-year period, 1990–present (SSA data).