How old is someone named Jeffery?
The average Jeffery is 54 years old.
Half of all living Jefferys are between 45 and 64.
When was Jeffery popular?
Jeffery was at its most popular in the early 1960s. Parents have been moving away from it for decades, and 110 babies were named Jeffery in 2025.
Popular names of 1962 · The most popular names of the 1960s →
Show the numbers by decade
| Born in | Babies born | Alive today |
|---|---|---|
| 1900s | 13 | 0 |
| 1910s | 129 | 0 |
| 1920s | 229 | 0 |
| 1930s | 295 | under 100 |
| 1940s | 4,820 | 2,300 |
| 1950s | 46,087 | 32,000 |
| 1960s | 79,985 | 65,000 |
| 1970s | 44,857 | 40,000 |
| 1980s | 29,792 | 28,000 |
| 1990s | 14,685 | 14,000 |
| 2000s | 6,487 | 6,400 |
| 2010s | 3,448 | 3,400 |
| 2020s | 986 | 980 |
How many Jefferys are still alive?
About 190,000 Jefferys are alive in the US today. That's 83% of the roughly 230,000 babies named Jeffery since 1894.
Most Jefferys ever born are still alive.
What generation is the name Jeffery?
About two in five living Jefferys are Gen Xers, born between 1965 and 1980.
- Boomer 35%
- Gen X 39%
- Millennial 19%
- Gen Z 6%
- Gen Alpha 2%
Is Jeffery an old name?
Yes. Jeffery is older than 81 in 100 names on AgeByName.
Looking ahead: if babies keep getting the name at today's pace, the typical Jeffery will be 71 in 2056, so the name is getting older.
Is Jeffery a boy or girl name?
Almost entirely boys: 99.4% of living Jefferys are men.
Names the same age as Jeffery
NAME TWIN
Jeffery's name twin is Kurt. Of all 3,713 names on AgeByName, Kurt's age curve is the closest match to Jeffery's: 94% alike.
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Questions about the name Jeffery
How old is the average Jeffery?
The average Jeffery in the US is 54 years old. The median is 57, so half are older and half younger.
How many people are named Jeffery?
About 190,000 Jefferys are alive in the US today, out of roughly 230,000 babies given the name since 1894.
When was the name Jeffery most popular?
In 1962, when about 9,300 baby boys were named Jeffery.
Is Jeffery a Gen X name?
Partly. Gen X are the largest group, about 39% of living Jefferys, 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