How old is someone named Kay?
The average Kay is 71 years old.
Half of all living Kays are between 65 and 81.
When was Kay popular?
Parents have been choosing Kay less often since its peak in 1942; 47 babies got the name in 2025.
Popular names of 1942 · The most popular names of the 1940s →
Show the numbers by decade
| Born in | Babies born | Alive today |
|---|---|---|
| 1900s | 491 | 0 |
| 1910s | 2,465 | 0 |
| 1920s | 3,425 | under 100 |
| 1930s | 18,607 | 4,900 |
| 1940s | 33,379 | 19,000 |
| 1950s | 24,966 | 19,000 |
| 1960s | 12,554 | 11,000 |
| 1970s | 2,581 | 2,400 |
| 1980s | 1,464 | 1,400 |
| 1990s | 916 | 900 |
| 2000s | 653 | 650 |
| 2010s | 544 | 540 |
| 2020s | 320 | 320 |
How many Kays are still alive?
About 60,000 Kays are alive in the US today. That's 58% of the roughly 100,000 babies named Kay since 1882.
Roughly half of all Kays ever born are still living.
What generation is the name Kay?
More than half of living Kays are Baby Boomers, born between 1946 and 1964.
Is Kay an old name?
Yes. Kay is older than 99 in 100 names on AgeByName.
Is Kay a boy or girl name?
Mostly girls: 98.2% of living Kays are women.
Names the same age as Kay
NAME TWIN
Kay's name twin is Joyce. Of all 3,713 names on AgeByName, Joyce's age curve is the closest match to Kay's: 95% alike.
Other spellings: Kaye (68)
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Questions about the name Kay
How old is the average Kay?
The average Kay in the US is 71 years old. The median is 73, so half are older and half younger.
How many people are named Kay?
About 60,000 Kays are alive in the US today, out of roughly 100,000 babies given the name since 1882.
When was the name Kay most popular?
In 1942, when about 3,700 baby girls were named Kay.
Is Kay a Boomer name?
Yes. About 59% of living Kays are Baby Boomers, born between 1946 and 1964.
Estimates from Social Security Administration baby-name records (births 1880–2025) and SSA cohort life tables (2026 Trustees Report). Updated each spring. How we calculate this