How old is someone named Jo?
The average Jo is 71 years old.
Half of all living Jos are between 67 and 78.
When was Jo popular?
Jo had one big moment, peaking in 1954. 52% of the babies ever named Jo arrived in a single 15-year stretch.
Popular names of 1954 · The most popular names of the 1950s →
Show the numbers by decade
| Born in | Babies born | Alive today |
|---|---|---|
| 1900s | 311 | 0 |
| 1910s | 1,266 | 0 |
| 1920s | 7,061 | 200 |
| 1930s | 28,931 | 6,700 |
| 1940s | 48,722 | 28,000 |
| 1950s | 64,223 | 50,000 |
| 1960s | 20,403 | 18,000 |
| 1970s | 6,094 | 5,700 |
| 1980s | 2,138 | 2,100 |
| 1990s | 686 | 670 |
| 2000s | 303 | 300 |
| 2010s | 298 | 300 |
| 2020s | 266 | 270 |
How many Jos are still alive?
About 110,000 Jos are alive in the US today. That's 62% of the roughly 180,000 babies named Jo since 1881.
Roughly half of all Jos ever born are still living.
What generation is the name Jo?
About two in three living Jos are Baby Boomers, born between 1946 and 1964.
- Silent 17%
- Boomer 69%
- Gen X 11%
- Millennial 2%
- Gen Z under 1%
Is Jo an old name?
Yes. Jo is older than 99 in 100 names on AgeByName.
Is Jo a boy or girl name?
Almost entirely girls: 99.1% of living Jos are women.
Names the same age as Jo
NAME TWIN
Jo's name twin is Gale. Of all 3,713 names on AgeByName, Gale's age curve is the closest match to Jo's: 92% alike.
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Questions about the name Jo
How old is the average Jo?
The average Jo in the US is 71 years old. The median is 72, so half are older and half younger.
How many people are named Jo?
About 110,000 Jos are alive in the US today, out of roughly 180,000 babies given the name since 1881.
When was the name Jo most popular?
In 1954, when about 8,100 baby girls were named Jo.
Is Jo a Boomer name?
Yes. About 69% of living Jos 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