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Kelvin vs Kelyn

American parents have registered 51,855 Kelvins since 1880, against 764 Kelyns. Kelvin is still ahead, with 214 babies in 2025.

Babies given each name, 1880–2025

Births per year: Kelvin against Kelyn, 1880 to 2025 0 400 800 1.2k 1.6k 1880 1900 1920 1940 1960 1980 2000 2020

Kelvin 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

Kelvin has been the commoner name in every year either was published, 1912 to 2025. The lead has never changed hands.

The closest they came was 2018, when Kelvin had 281 and Kelyn had 22.

Side by side

  Kelvin Kelyn
Total US births 51,855764
Most in one year 1,38035
Babies in 2025 2147
Estimated living today 46,000750
Median age today 4220
Peak year 19612006
Best rank 209th boys5,906th girls
Rank in 2025 1,034thunranked
First recorded 19121981
Girls / boys 304 / 51,551428 / 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 Kelvins alive today are over 42; half the Kelyns are over 20. That is 22 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 Kelvin Kelyn
England and Wales 1,13610

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: Kelvin and Kelyn.