Isaiah vs Isaac
Isaac leads today (#47 vs #57), though both are past their peak.
145 years, head to head
Babies named Isaiah and Isaac per year in U.S. Social Security records, 1880–2025.
Head to head
2025 rank
#57
#47
Babies named in 2025
5,267
5,953
Peak year
2006
2013
Trend
Declining since 2006
Declining since 2013
Usually for
Boys
Boys
Lifetime births
254,020
331,508
Try another matchup
Isaiah against names whose popularity has moved like its own.