Humanverse

Kaz vs Kaziah

American parents have registered 725 Kazes since 1880, against 660 Kaziahs. But in 2025 it was Kaziah that was commoner, 66 babies to 30.

Babies given each name, 1880–2025

Births per year: Kaz against Kaziah, 1880 to 2025 0 20 40 60 80 1880 1900 1920 1940 1960 1980 2000 2020

Kaz Kaziah

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 47 years in which either name was published, Kaz for 27 years and Kaziah for 20 years. The lead changed hands 7 times.

Side by side

  Kaz Kaziah
Total US births 725660
Most in one year 5266
Babies in 2025 3066
Estimated living today 710660
Median age today 109
Peak year 20222025
Best rank 2,589th boys2,822nd girls
Rank in 2025 3,658th2,822nd
First recorded 19181995
Girls / boys 0 / 725581 / 79

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.

Both names abroad

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

Country Kaz Kaziah
England and Wales 361

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: Kaz and Kaziah.