Jon vs Dennis
Dennis leads today (#707 vs #951), though both are past their peak.
145 years, head to head
Babies named Jon and Dennis per year in U.S. Social Security records, 1880–2025.
Head to head
2025 rank
#951
#707
Babies named in 2025
246
381
Peak year
1965
1946
Trend
Declining since 1985
Declining since 1985
Usually for
Boys
Boys
Lifetime births
168,142
621,000
Try another matchup
Jon against names whose popularity has moved like its own.