Humanverse

Keiji vs Keira

American parents have registered 33,843 Keiras since 1880, against 173 Keijis. Keira is still ahead, with 469 babies in 2025.

Babies given each name, 1880–2025

Births per year: Keiji against Keira, 1880 to 2025 0 800 1.6k 2.4k 3.2k 1880 1900 1920 1940 1960 1980 2000 2020

Keiji Keira

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 69 years in which either name was published, Keira for 64 years and Keiji for 5 years. The lead changed hands once.

Side by side

  Keiji Keira
Total US births 17333,843
Most in one year 153,022
Babies in 2025 6469
Estimated living today 14034,000
Median age today 1316
Peak year 20092006
Best rank 5,800th boys110th girls
Rank in 2025 10,695th621st
First recorded 19231962
Girls / boys 0 / 17333,836 / 7

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 Keiras alive today are over 16; half the Keijis are over 13. That is 3 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 Keiji Keira
France 45780

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: Keiji and Keira.