Dilan is a name of Turkish origin and it means "valley" in Turkish language. It is also associated with the name Dilara, which means "like a river flowing through the valley". The name Dilan is believed to have been popularized by the novel "Muhsin Bey" written by Reşat Nuri Güntekin, where the main character's wife was named Dilara and her brother was named Dilan. Although it is not very common worldwide, the name Dilan has gained popularity in recent years, especially among Turkish-speaking communities. It is considered to be a unisex name but it is more commonly used for boys.
Based on the provided statistics, the name Dilan has seen varying levels of popularity over the past few decades in the United States. The highest peak in popularity was in 2003 with 14 births that year. Since then, the number of births has fluctuated between 5 and 9 annually, with a noticeable decline to 6 births each in 2018 and 2021. Despite this recent decrease, Dilan remains a unique and distinct name choice for parents in the United States.