Kaelyn vs Kailyn
Kaelyn leads today (#1,592 vs #1,818), though both are past their peak.
145 years, head to head
Babies named Kaelyn and Kailyn per year in U.S. Social Security records, 1880–2025.
Head to head
2025 rank
#1,592
#1,818
Babies named in 2025
131
110
Peak year
2009
2011
Trend
Declining since 2009
Declining since 2010
Usually for
Girls
Girls
Lifetime births
15,566
14,211
Try another matchup
Kaelyn against names whose popularity has moved like its own.