Humanverse

Marilyn vs Marylyn

American parents have registered 374,857 Marilyns since 1880, against 3,336 Marylyns. Marilyn is still ahead, with 356 babies in 2025.

Babies given each name, 1880–2025

Births per year: Marilyn against Marylyn, 1880 to 2025 0 3k 6k 9k 12k 1880 1900 1920 1940 1960 1980 2000 2020

Marilyn Marylyn

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

Marilyn has been the commoner name in every year either was published, 1899 to 2025. The lead has never changed hands.

The closest they came was 1910, when Marilyn had 18 and Marylyn had 5.

Side by side

  Marilyn Marylyn
Total US births 374,8573,336
Most in one year 11,905238
Babies in 2025 3567
Estimated living today 204,0001,800
Median age today 7372
Peak year 19471936
Best rank 29th girls418th girls
Rank in 2025 760th11,932nd
First recorded 18991910
Girls / boys 373,791 / 1,0663,336 / 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.

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 Marilyn Marylyn
France 5,16045
England and Wales 2773

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: Marilyn and Marylyn.