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Mary vs Marykate

American parents have registered 4,156,654 Marys since 1880, against 2,189 Marykates. Mary is still ahead, with 2,230 babies in 2025.

Babies given each name, 1880–2025

Births per year: Mary against Marykate, 1880 to 2025 0 20k 40k 60k 80k 1880 1900 1920 1940 1960 1980 2000 2020

Mary Marykate

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

Mary 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 2025, when Mary had 2,230 and Marykate had 44.

Side by side

  Mary Marykate
Total US births 4,156,6542,189
Most in one year 74,17185
Babies in 2025 2,23044
Estimated living today 1.7 million2,100
Median age today 6927
Peak year 19212001
Best rank 1st girls1,995th girls
Rank in 2025 125th3,459th
First recorded 18801958
Girls / boys 4,141,481 / 15,1732,189 / 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 Marys alive today are over 69; half the Marykates are over 27. That is 42 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 Mary Marykate
Ireland 42,871101 Mary Kate
England and Wales 7,33477
Northern Ireland 5983

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: Mary and Marykate.