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Kelsey vs Kelyn

American parents have registered 155,738 Kelseys since 1880, against 764 Kelyns. Kelsey is still ahead, with 349 babies in 2025.

Babies given each name, 1880–2025

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

Kelsey Kelyn

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

Kelsey has been the commoner name in every year either was published, 1891 to 2025. The lead has never changed hands.

The closest they came was 2018, when Kelsey had 757 and Kelyn had 22.

Side by side

  Kelsey Kelyn
Total US births 155,738764
Most in one year 11,88235
Babies in 2025 3497
Estimated living today 152,000750
Median age today 3120
Peak year 19922006
Best rank 23rd girls5,906th girls
Rank in 2025 814thunranked
First recorded 18911981
Girls / boys 150,416 / 5,322428 / 336

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 Kelseys alive today are over 31; half the Kelyns are over 20. That is 11 years between them: two names in use at the same time, worn by two different generations.

Both names abroad

Countries whose statistics office publishes both names, so the comparison can be made somewhere other than the United States.

Country Kelsey Kelyn
England and Wales 7,47010

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: Kelsey and Kelyn.