Siah first appears in the U.S. registration record in 1999. Its popularity climbed over the following decades. In 2021, 34 babies received the name (ranked #3411). Today it sits well outside the top 1,000 (around #4306), with roughly 36 babies named Siah each year. Siah's usage has held roughly steady recently. In total, around 541 babies have been registered with this name since 1880.