The name Kaithlyn saw a notable rise in popularity from the mid-1990s to around 2004, with a peak of 21 births recorded in both 2002 and 2003. After that period, the number of babies named Kaithlyn consistently decreased, with the most recent years (2016-2023) showing only 5 to 8 births annually. Overall, there were a total of 376 babies named Kaithlyn between 1985 and 2023.