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Isabelle vs Isak

American parents have registered 107,782 Isabelles since 1880, against 1,107 Isaks. Isabelle is still ahead, with 1,825 babies in 2025.

Babies given each name, 1880–2025

Births per year: Isabelle against Isak, 1880 to 2025 0 1.3k 2.5k 3.8k 5k 1880 1900 1920 1940 1960 1980 2000 2020

Isabelle Isak

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

Isabelle 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 1979, when Isabelle had 42 and Isak had 6.

Side by side

  Isabelle Isak
Total US births 107,7821,107
Most in one year 4,10657
Babies in 2025 1,82538
Estimated living today 84,0001,100
Median age today 1618
Peak year 20072004
Best rank 79th girls2,075th boys
Rank in 2025 166th3,128th
First recorded 18801979
Girls / boys 107,762 / 200 / 1,107

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 Isaks alive today are over 18; half the Isabelles are over 16. That is 2 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 Isabelle Isak
France 378,370425
England and Wales 46,977192
Sweden 11,32916,125
Norway 1,1787,498
Switzerland 968111
Belgium 83917
Poland 1472

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: Isabelle and Isak.