Cai
Recorded 1989–2025 · United States
Cai was most popular in 2022, when 131 American babies were given the name — ranking #2,983 that year. In 2025 it ranked #4,080, with 81 births. Across 1880–2025 the Social Security Administration has recorded 1,945 people named Cai.
Cai over time
How old is the name Cai?
Cai first appears in Social Security Administration records in 1989, which makes it about 36 years old as a recorded American name. It has been recorded in 35 of the 37 years since.
How many people are named Cai?
The Social Security Administration has recorded 1,945 American births named Cai between 1880 and 2025. That is recorded US births, not a world population — it counts people issued a Social Security number at birth in the United States. Of those, roughly 1,927 are estimated to be alive today.
How many babies were named Cai in 2025?
81 American babies were named Cai in 2025, ranking #4,080 that year.
Is Cai getting more or less popular?
Cai is rising. Across 2021–2025 it averaged 107 births a year, against 84 a year across 2011–2015 — a change of +28% over the decade.
Measured on recorded births. American births overall have fallen since 2007, so most established names lose births over any recent decade — a name can shed births and still hold its rank. Compare the rank above, which is measured against the other names of the same year.
Is Cai a boy’s or a girl’s name?
Across the whole record Cai is a unisex name — 25.4% of the 1,945 Americans given it were girls and 74.5% were boys. In births since 2016 it is 24% girls and 76% boys.
Counted from every US birth the Social Security Administration recorded under this name, so it reflects use rather than opinion. A name given to fewer than five babies of one sex in a year is withheld at source and is not counted.
How old is someone named Cai?
Roughly 1,927 Americans named Cai are alive today — 99% of everyone ever recorded with the name. The median is 10 years old, and half are between 5 and 16. That is a narrow band because Cai is a young name — it only became common recently, so almost everyone carrying it is still a child or a young adult.
An estimate, not a count. Recorded births are carried forward through the Social Security Administration’s 2023 period life table, by age and sex. That table describes mortality in one recent year, so it credits the oldest cohorts with today’s survival rather than the harsher rates they actually lived through — the further back a name peaked, the more this will overstate how many remain. It counts people issued a Social Security number at birth, not immigrants who arrived later.
Where Cai is most concentrated
How much more common the name is in each state than across the country as a whole.
Explore further
See Cai on the interactive charts
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Source: U.S.A. Social Security Administration. Years 1880–2025. namelegacy.org