Humanverse

Isabell vs Isaias

American parents have registered 18,644 Isaiases since 1880, against 15,279 Isabells. Isaias is still ahead, with 755 babies in 2025.

Babies given each name, 1880–2025

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

Isabell Isaias

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 146 years in which either name was published, Isabell for 85 years and Isaias for 61 years. The lead changed hands once.

Side by side

  Isabell Isaias
Total US births 15,27918,644
Most in one year 388755
Babies in 2025 87755
Estimated living today 7,70018,000
Median age today 1915
Peak year 20062025
Best rank 723rd girls426th boys
Rank in 2025 2,139th426th
First recorded 18801915
Girls / boys 15,274 / 50 / 18,644

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 Isabells alive today are over 19; half the Isaiases are over 15. That is 4 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 Isabell Isaias
England and Wales 67341

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: Isabell and Isaias.