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Delia vs Delsa

American parents have registered 37,380 Delias since 1880, against 248 Delsas. Delia is still ahead, with 135 babies in 2025.

Babies given each name, 1880–2025

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

Delia Delsa

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 2021, when Delia had 147 and Delsa had 10.

Side by side

  Delia Delsa
Total US births 37,380248
Most in one year 49011
Babies in 2025 1355
Estimated living today 22,000130
Median age today 5112
Peak year 19571917
Best rank 423rd girls2,693rd girls
Rank in 2025 1,561st14,942nd
First recorded 18801917
Girls / boys 37,318 / 62248 / 0

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 Delias alive today are over 51; half the Delsas are over 12. That is 39 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 Delsa
England and Wales 62225

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 Delsa.