Humanverse

Kasi vs Kason

American parents have registered 14,951 Kasons since 1880, against 2,341 Kasis. Kason is still ahead, with 480 babies in 2025.

Babies given each name, 1880–2025

Births per year: Kasi against Kason, 1880 to 2025 0 250 500 750 1k 1880 1900 1920 1940 1960 1980 2000 2020

Kasi Kason

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 63 years in which either name was published, Kasi for 33 years and Kason for 30 years. The lead changed hands once.

Side by side

  Kasi Kason
Total US births 2,34114,951
Most in one year 114899
Babies in 2025 8480
Estimated living today 2,30015,000
Median age today 3710
Peak year 19882019
Best rank 1,285th girls362nd boys
Rank in 2025 unranked597th
First recorded 19621974
Girls / boys 2,280 / 6147 / 14,904

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 Kasis alive today are over 37; half the Kasons are over 10. That is 27 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 Kasi Kason
England and Wales 23359

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: Kasi and Kason.