How old is someone named Foster?
The average Foster is 29 years old.
Half of all living Fosters are between 8 and 45. The average sits between a large young group and an older one, so many Fosters are much younger than 29.
When was Foster popular?
Foster was popular around 1881, faded for decades, and is back: 278 babies got the name in 2025.
Popular names of 2025 · The most popular names of the 2020s →
Show the numbers by decade
| Born in | Babies born | Alive today |
|---|---|---|
| 1900s | 343 | 0 |
| 1910s | 1,411 | 0 |
| 1920s | 1,660 | under 100 |
| 1930s | 1,041 | 130 |
| 1940s | 1,070 | 460 |
| 1950s | 757 | 500 |
| 1960s | 476 | 380 |
| 1970s | 359 | 320 |
| 1980s | 361 | 340 |
| 1990s | 873 | 850 |
| 2000s | 1,009 | 990 |
| 2010s | 1,988 | 2,000 |
| 2020s | 1,468 | 1,500 |
How many Fosters are still alive?
About 7,400 Fosters are alive in the US today. That's 55% of the roughly 13,000 babies named Foster since 1880.
Roughly half of all Fosters ever born are still living.
What generation is the name Foster?
About two in five living Fosters are in Gen Alpha, born in 2013 or later.
Is Foster an old name?
Not really. Foster is younger than 51 in 100 names on AgeByName.
Looking ahead: if babies keep getting the name at today's pace, the typical Foster will be 29 in 2056, about the same as today.
Is Foster a boy or girl name?
Mostly boys: 96.5% of living Fosters are men.
Names the same age as Foster
NAME TWIN
Foster's name twin is Noble. Of all 3,713 names on AgeByName, Noble's age curve is the closest match to Foster's: 91% alike.
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Questions about the name Foster
How old is the average Foster?
The average Foster in the US is 29 years old. The median is 19, so half are older and half younger.
How many people are named Foster?
About 7,400 Fosters are alive in the US today, out of roughly 13,000 babies given the name since 1880.
When was the name Foster most popular?
In 2025, when about 280 baby boys were named Foster.
Is Foster a Gen Alpha name?
Partly. Gen Alpha are the largest group, about 41% of living Fosters, 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