Darlyn first appears in the U.S. registration record in 1926. Its popularity climbed over the following decades. In 2021, 61 babies received the name (ranked #2790). Today it sits well outside the top 1,000 (around #3796), with roughly 43 babies named Darlyn each year. Darlyn's usage has held roughly steady recently. In total, around 2,065 babies have been registered with this name since 1880.