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Delia vs Delphin

American parents have registered 37,380 Delias since 1880, against 116 Delphins. Delia is still ahead, with 135 babies in 2025.

Babies given each name, 1880–2025

Births per year: Delia against Delphin, 1880 to 2025 0 125 250 375 500 1880 1900 1920 1940 1960 1980 2000 2020

Delia Delphin

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

Delia has been the commoner name in every year either was published, 1880 to 2025. The lead has never changed hands.

The closest they came was 1907, when Delia had 162 and Delphin had 13.

Side by side

  Delia Delphin
Total US births 37,380116
Most in one year 49013
Babies in 2025 135under 5
Estimated living today 22,0004
Median age today 5191
Peak year 19571907
Best rank 423rd girls735th boys
Rank in 2025 1,561stunranked
First recorded 18801907
Girls / boys 37,318 / 620 / 116

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 Delphins alive today are over 91; half the Delias are over 51. That is 40 years between them: two names in use at the same time, worn by two different generations.

Both names abroad

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

Country Delia Delphin
France 2,9351,500

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: Delia and Delphin.