Sean, after a long reign as one of the top Irish boys' names in the US, has now slipped as parents look to fresher Irish choices such as Liam and Aidan. In Ireland, Sean is still highly popular, but variation Senan, an Anglicized spelling of diminutive Seanan, is also stylish in Ireland. While Sean is the Irish form of John, Seanan and Senan may be thought of either as Sean diminutives or relatives of the Latin word "senator".

Sean may be off its peak for boys, but there were still 1300 baby boys named Sean in the US in the most recent year counted, versus only five baby girls. In fact, there were fewer than 30 baby girls given the spellings Sean, Shaun, and Shawn combined. So while this name has been long used for girls, it remains in only occasional use as a feminine name and is not truly unisex in the way that names such as Rory and River are.