Sierra vs Morgan
Morgan leads today (#312 vs #614), though both are past their peak.
145 years, head to head
Babies named Sierra and Morgan per year in U.S. Social Security records, 1880–2025.
Head to head
2025 rank
#614
#312
Babies named in 2025
476
977
Peak year
1998
1995
Trend
Declining since 1998
Declining since 1995
Usually for
Girls
Girls
Lifetime births
100,597
223,626
Try another matchup
Sierra against names whose popularity has moved like its own.