Leonore entered U.S. records in 1881, near the turn of the 20th century. Its popularity climbed over the following decades. In 1928, 70 babies received the name (ranked #876). Today it sits well outside the top 1,000 (around #13905), with roughly 7 babies named Leonore each year. Leonore's usage has held roughly steady recently. In total, around 2,306 babies have been registered with this name since 1880.