How old is someone named Katie?
The average Katie is 37 years old.
Half of all living Katies are between 27 and 44.
When was Katie popular?
Parents have been choosing Katie less often since its peak in 1986; 447 babies got the name in 2025.
Popular names of 1986 · The most popular names of the 1980s →
Show the numbers by decade
| Born in | Babies born | Alive today |
|---|---|---|
| 1900s | 5,309 | 0 |
| 1910s | 8,436 | 0 |
| 1920s | 9,443 | 150 |
| 1930s | 7,000 | 1,500 |
| 1940s | 6,192 | 3,500 |
| 1950s | 5,257 | 4,100 |
| 1960s | 5,216 | 4,600 |
| 1970s | 17,523 | 17,000 |
| 1980s | 73,125 | 71,000 |
| 1990s | 49,527 | 49,000 |
| 2000s | 30,638 | 30,000 |
| 2010s | 11,704 | 12,000 |
| 2020s | 3,324 | 3,300 |
How many Katies are still alive?
About 190,000 Katies are alive in the US today. That's 81% of the roughly 240,000 babies named Katie since 1880.
Most Katies ever born are still alive.
What generation is the name Katie?
About half of living Katies are Millennials, born between 1981 and 1996.
Is Katie an old name?
Somewhat. Katie is older than 61 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 Katie will be 59 in 2056, so the name is getting older.
Is Katie a boy or girl name?
Almost entirely girls: 99.8% of living Katies are women.
Names the same age as Katie
NAME TWIN
Katie's name twin is Justin. Of all 3,713 names on AgeByName, Justin's age curve is the closest match to Katie's: 91% alike.
Other spellings: Katy (39)
Compare: Katherine vs. Katie
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Questions about the name Katie
How old is the average Katie?
The average Katie in the US is 37 years old. The median is 37, so half are older and half younger.
How many people are named Katie?
About 190,000 Katies are alive in the US today, out of roughly 240,000 babies given the name since 1880.
When was the name Katie most popular?
In 1986, when about 8,400 baby girls were named Katie.
Is Katie a Millennial name?
Yes. About 53% of living Katies are Millennials, born between 1981 and 1996.
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