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Dion vs Dionisio

American parents have registered 20,164 Dions since 1880, against 1,194 Dionisios. Dion is still ahead, with 161 babies in 2025.

Babies given each name, 1880–2025

Births per year: Dion against Dionisio, 1880 to 2025 0 200 400 600 800 1880 1900 1920 1940 1960 1980 2000 2020

Dion Dionisio

Each line is every baby given the name that year, girls and boys added together — the only count that means the same thing for both names. A line breaks where the name fell below five babies in a year — the point at which the SSA stops publishing it — rather than being drawn through a figure nobody published. A single published year in a gap shows as a dot.

Who was ahead

Of the 111 years in which either name was published, Dion for 95 years and Dionisio for 16 years. The lead changed hands 3 times.

Side by side

  Dion Dionisio
Total US births 20,1641,194
Most in one year 60723
Babies in 2025 1616
Estimated living today 18,000900
Median age today 3936
Peak year 19701977
Best rank 343rd boys2,063rd boys
Rank in 2025 1,267th10,695th
First recorded 19291913
Girls / boys 1,250 / 18,9140 / 1,194

A rank is a position within one sex’s list for one year, so the two rank rows are not subtracted from one another and the winning column is not marked on them. The living figure is a life-table estimate, not a count.

Which name is older

Half of the Dions alive today are over 39; half the Dionisios are over 36. That is 3 years between them: two names in use at the same time, worn by two different generations.

Where each one is strongest

How much commoner the name is in that state than it is nationally, from births recorded since 1910.

Both names abroad

Countries whose statistics office publishes both names, so the comparison can be made somewhere other than the United States.

Country Dion Dionisio
England and Wales 2,3363
France 15080

Every spelling a country files separately is added together, over whatever years that country publishes — which is not the same range in any two of them, so read the columns against each other and not the rows.

Compare something else

Related comparisons

Social Security Administration birth records, 1880–2025, public domain. Full histories: Dion and Dionisio.