Kosei vs Emma
Emma leads today (#3 vs unranked), but Emma is slipping.
145 years, head to head
Babies named Kosei and Emma per year in U.S. Social Security records, 1880–2025.
Head to head
2025 rank
unranked (boys)
#3 (girls)
Babies named in 2025
0
12,754
Peak year
2008
1881
Trend
Holding steady
Declining since 2013
Usually for
Boys
Girls
Lifetime births
90
776,439