Humanverse

Kyzen vs Kyzer

American parents have registered 1,966 Kyzers since 1880, against 611 Kyzens. Kyzer is still ahead, with 117 babies in 2025.

Babies given each name, 1880–2025

Births per year: Kyzen against Kyzer, 1880 to 2025 0 60 120 180 240 1880 1900 1920 1940 1960 1980 2000 2020

Kyzen Kyzer

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

Kyzer has been the commoner name in every year either was published, 1997 to 2025. The lead has never changed hands.

The closest they came was 2024, when Kyzen had 121 and Kyzer had 134.

Side by side

  Kyzen Kyzer
Total US births 6111,966
Most in one year 121215
Babies in 2025 91117
Estimated living today 6102,000
Median age today 36
Peak year 20242021
Best rank 1,487th boys1,023rd boys
Rank in 2025 1,771st1,499th
First recorded 20061997
Girls / boys 0 / 6110 / 1,966

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 Kyzers alive today are over 6; half the Kyzens are over 3. That is 3 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 Kyzen Kyzer
England and Wales 460

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

Social Security Administration birth records, 1880–2025, public domain. Full histories: Kyzen and Kyzer.