Humanverse

Kasey vs Kassy

American parents have registered 45,949 Kaseys since 1880, against 898 Kassys. Kasey is still ahead, with 285 babies in 2025.

Babies given each name, 1880–2025

Births per year: Kasey against Kassy, 1880 to 2025 0 500 1k 1.5k 2k 1880 1900 1920 1940 1960 1980 2000 2020

Kasey Kassy

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

Kasey has been the commoner name in every year either was published, 1950 to 2025. The lead has never changed hands.

The closest they came was 1960, when Kasey had 26 and Kassy had 6.

Side by side

  Kasey Kassy
Total US births 45,949898
Most in one year 1,80041
Babies in 2025 285under 5
Estimated living today 45,000880
Median age today 3333
Peak year 19921982
Best rank 204th girls2,369th girls
Rank in 2025 1,872ndunranked
First recorded 19501960
Girls / boys 33,326 / 12,623898 / 0

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.

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 Kasey Kassy
France 801,175

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: Kasey and Kassy.