Humanverse

Caelum vs Caelyn

American parents have registered 2,426 Caelyns since 1880, against 928 Caelums. But in 2025 it was Caelum that was commoner, 97 babies to 24.

Babies given each name, 1880–2025

Births per year: Caelum against Caelyn, 1880 to 2025 0 50 100 150 200 1880 1900 1920 1940 1960 1980 2000 2020

Caelum Caelyn

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

Of the 38 years in which either name was published, Caelyn for 30 years and Caelum for 8 years. The lead changed hands once.

Side by side

  Caelum Caelyn
Total US births 9282,426
Most in one year 97198
Babies in 2025 9724
Estimated living today 9202,400
Median age today 615
Peak year 20252012
Best rank 1,688th boys1,251st girls
Rank in 2025 1,688th5,238th
First recorded 19951987
Girls / boys 0 / 9282,421 / 5

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 Caelyns alive today are over 15; half the Caelums are over 6. That is 9 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 Caelum Caelyn
England and Wales 8255
Ireland 477

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: Caelum and Caelyn.