Ruba first appears in the U.S. registration record in 1919. Its popularity climbed over the following decades. In 1996, 19 babies received the name (ranked #5242). Today it sits well outside the top 1,000 (around #10863), with roughly 10 babies named Ruba each year. Ruba's usage has held roughly steady recently. In total, around 502 babies have been registered with this name since 1880.