How old is someone named Jefferson?
The average Jefferson is 32 years old.
Half of all living Jeffersons are between 13 and 51.
When was Jefferson popular?
Jefferson was popular around 1880, faded for decades, and is back: 298 babies got the name in 2025.
Popular names of 2009 · The most popular names of the 2000s →
Show the numbers by decade
| Born in | Babies born | Alive today |
|---|---|---|
| 1900s | 244 | 0 |
| 1910s | 1,039 | 0 |
| 1920s | 1,429 | under 100 |
| 1930s | 908 | 100 |
| 1940s | 1,142 | 490 |
| 1950s | 1,738 | 1,200 |
| 1960s | 2,017 | 1,600 |
| 1970s | 2,165 | 1,900 |
| 1980s | 1,638 | 1,500 |
| 1990s | 2,359 | 2,300 |
| 2000s | 3,268 | 3,200 |
| 2010s | 3,789 | 3,800 |
| 2020s | 2,058 | 2,000 |
How many Jeffersons are still alive?
About 18,000 Jeffersons are alive in the US today. That's 74% of the roughly 24,000 babies named Jefferson since 1880.
Most Jeffersons ever born are still alive.
What generation is the name Jefferson?
About one in four living Jeffersons are in Gen Z, born between 1997 and 2012.
Is Jefferson an old name?
Somewhat. Jefferson is older than 55 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 Jefferson will be 37 in 2056, so the name is aging slowly.
Is Jefferson a boy or girl name?
Almost entirely boys: over 99.9% of living Jeffersons are men.
Names the same age as Jefferson
NAME TWIN
Jefferson's name twin is Angelo. Of all 3,713 names on AgeByName, Angelo's age curve is the closest match to Jefferson's: 93% alike.
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Questions about the name Jefferson
How old is the average Jefferson?
The average Jefferson in the US is 32 years old. The median is 27, so half are older and half younger.
How many people are named Jefferson?
About 18,000 Jeffersons are alive in the US today, out of roughly 24,000 babies given the name since 1880.
When was the name Jefferson most popular?
In 2009, when about 440 baby boys were named Jefferson.
Is Jefferson a Gen Z name?
Partly. Gen Z are the largest group, about 28% of living Jeffersons, 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