Arlo vs Theodore
Theodore leads today (#4 vs #148), and both are climbing.
145 years, head to head
Babies named Arlo and Theodore per year in U.S. Social Security records, 1880–2025.
Head to head
2025 rank
#148
#4
Babies named in 2025
2,443
13,355
Peak year
2024
2025
Trend
Rising since 1993
Rising since 2000
Usually for
Boys
Boys
Lifetime births
24,245
317,206
Try another matchup
Arlo against names whose popularity has moved like its own.