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Cairo vs Caisen

American parents have registered 9,999 Cairos since 1880, against 510 Caisens. Cairo is still ahead, with 1,000 babies in 2025.

Babies given each name, 1880–2025

Births per year: Cairo against Caisen, 1880 to 2025 0 300 600 900 1.2k 1880 1900 1920 1940 1960 1980 2000 2020

Cairo Caisen

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

Cairo has been the commoner name in every year either was published, 1979 to 2025. The lead has never changed hands.

The closest they came was 2010, when Cairo had 51 and Caisen had 12.

Side by side

  Cairo Caisen
Total US births 9,999510
Most in one year 1,15751
Babies in 2025 1,00051
Estimated living today 9,900510
Median age today 46
Peak year 20222025
Best rank 306th boys2,572nd boys
Rank in 2025 341st2,572nd
First recorded 19792004
Girls / boys 584 / 9,4150 / 510

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 Caisens alive today are over 6; half the Cairos are over 4. That is 2 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 Cairo Caisen
England and Wales 1,6043

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: Cairo and Caisen.