Keirstan is an uncommon yet distinctive given name of American origin. It is believed to have emerged as a spelling variant of Kirstin, which itself is a feminine form of the Scottish name Christopher. The name Keirstan has gained some popularity in recent years due to its unique sound and spelling, but it remains relatively rare compared to more traditional names.
The name Keirstan experienced peaks in popularity around the mid-90s, with a high of 14 births in 1995. However, it appears to have declined steadily since then, with the most recent years showing fewer than 10 births each. Overall, there were 118 babies named Keirstan born between 1992 and 2007.