How old is someone named Katy?
The average Katy is 39 years old.
Half of all living Katys are between 28 and 47.
When was Katy popular?
Katy was at its most popular in the late 1980s. Parents have been moving away from it for decades, and 64 babies were named Katy in 2025.
Popular names of 1987 · The most popular names of the 1980s →
Show the numbers by decade
| Born in | Babies born | Alive today |
|---|---|---|
| 1900s | 184 | 0 |
| 1910s | 356 | 0 |
| 1920s | 538 | under 100 |
| 1930s | 543 | 130 |
| 1940s | 706 | 400 |
| 1950s | 935 | 740 |
| 1960s | 1,445 | 1,300 |
| 1970s | 2,473 | 2,300 |
| 1980s | 5,931 | 5,700 |
| 1990s | 3,486 | 3,400 |
| 2000s | 2,212 | 2,200 |
| 2010s | 1,491 | 1,500 |
| 2020s | 480 | 480 |
How many Katys are still alive?
About 18,000 Katys are alive in the US today. That's 87% of the roughly 21,000 babies named Katy since 1880.
Most Katys ever born are still alive.
What generation is the name Katy?
About two in five living Katys are Millennials, born between 1981 and 1996.
Is Katy an old name?
Somewhat. Katy is older than 65 in 100 names on AgeByName, but younger than plenty of classics.
Looking ahead: if babies keep getting the name at today's pace, the typical Katy will be 57 in 2056, so the name is getting older.
Is Katy a boy or girl name?
Almost entirely girls: over 99.9% of living Katys are women.
Names the same age as Katy
NAME TWIN
Katy's name twin is Sara. Of all 3,713 names on AgeByName, Sara's age curve is the closest match to Katy's: 92% alike.
Other spellings: Katie (37)
Think you can guess a Linda's age?
Ten names, one slider each. Share your score.
Questions about the name Katy
How old is the average Katy?
The average Katy in the US is 39 years old. The median is 39, so half are older and half younger.
How many people are named Katy?
About 18,000 Katys are alive in the US today, out of roughly 21,000 babies given the name since 1880.
When was the name Katy most popular?
In 1987, when about 670 baby girls were named Katy.
Is Katy a Millennial name?
Partly. Millennials are the largest group, about 44% of living Katys, but the name spans several generations.
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