Humanverse

Kace vs Kacy

American parents have registered 6,047 Kacys since 1880, against 3,219 Kaces. But in 2025 it was Kace that was commoner, 221 babies to 22.

Babies given each name, 1880–2025

Births per year: Kace against Kacy, 1880 to 2025 0 80 160 240 320 1880 1900 1920 1940 1960 1980 2000 2020

Kace Kacy

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, Kacy for 55 years and Kace for 14 years. The lead changed hands once.

Side by side

  Kace Kacy
Total US births 3,2196,047
Most in one year 312222
Babies in 2025 22122
Estimated living today 3,2005,900
Median age today 635
Peak year 20191990
Best rank 759th boys957th girls
Rank in 2025 1,015th8,362nd
First recorded 19861956
Girls / boys 31 / 3,1885,049 / 998

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 Kacys alive today are over 35; half the Kaces are over 6. That is 29 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 Kace Kacy
England and Wales 62363
Scotland 318

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: Kace and Kacy.