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Isiah vs Isidoro

American parents have registered 24,721 Isiahs since 1880, against 1,292 Isidoros. Isiah is still ahead, with 120 babies in 2025.

Babies given each name, 1880–2025

Births per year: Isiah against Isidoro, 1880 to 2025 0 250 500 750 1k 1880 1900 1920 1940 1960 1980 2000 2020

Isiah Isidoro

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

Isiah 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 1972, when Isiah had 52 and Isidoro had 20.

Side by side

  Isiah Isidoro
Total US births 24,7211,292
Most in one year 82224
Babies in 2025 120under 5
Estimated living today 19,000850
Median age today 2544
Peak year 20011929
Best rank 336th boys1,480th boys
Rank in 2025 1,477thunranked
First recorded 18801913
Girls / boys 11 / 24,7100 / 1,292

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 Isidoros alive today are over 44; half the Isiahs are over 25. That is 19 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 Isiah Isidoro
France 10545

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: Isiah and Isidoro.