Kailyn vs Kaylynn
Kaylynn leads today (#1,570 vs #1,818), though both are past their peak.
145 years, head to head
Babies named Kailyn and Kaylynn per year in U.S. Social Security records, 1880–2025.
Head to head
2025 rank
#1,818
#1,570
Babies named in 2025
110
134
Peak year
2011
2009
Trend
Declining since 2010
Declining since 2009
Usually for
Girls
Girls
Lifetime births
14,211
12,252
Try another matchup
Kailyn against names whose popularity has moved like its own.