Sierra vs Diamond
Sierra leads today (#614 vs #2,017), though both are past their peak.
145 years, head to head
Babies named Sierra and Diamond per year in U.S. Social Security records, 1880–2025.
Head to head
2025 rank
#614
#2,017
Babies named in 2025
476
94
Peak year
1998
1999
Trend
Declining since 1998
Declining since 1999
Usually for
Girls
Girls
Lifetime births
100,597
33,733
Try another matchup
Sierra against names whose popularity has moved like its own.