Today, Una is a less common but recognizable name in U.S. records (ranked #3,095) with about 54 babies named Una each year. But it wasn't always this way. At its height in 1921, Una reached #468 nationally — 217 babies received it that single year. Its strongest stretch was the 1920s. Una's usage has held roughly steady recently. In all, around 8,059 babies have been registered as Una since 1880.