How old is someone named Denny?
The average Denny is 54 years old.
Half of all living Dennys are between 41 and 70.
When was Denny popular?
Denny peaked in 1947 and has been given less and less ever since. Only 24 babies got the name in 2025.
Popular names of 1947 · The most popular names of the 1940s →
Show the numbers by decade
| Born in | Babies born | Alive today |
|---|---|---|
| 1900s | 26 | 0 |
| 1910s | 157 | 0 |
| 1920s | 472 | 0 |
| 1930s | 1,286 | 200 |
| 1940s | 3,070 | 1,400 |
| 1950s | 2,796 | 1,900 |
| 1960s | 2,503 | 2,000 |
| 1970s | 2,021 | 1,800 |
| 1980s | 1,256 | 1,200 |
| 1990s | 910 | 880 |
| 2000s | 707 | 700 |
| 2010s | 439 | 440 |
| 2020s | 160 | 160 |
How many Dennys are still alive?
About 11,000 Dennys are alive in the US today. That's 67% of the roughly 16,000 babies named Denny since 1889.
Roughly half of all Dennys ever born are still living.
What generation is the name Denny?
About one in three living Dennys are Baby Boomers, born between 1946 and 1964.
Is Denny an old name?
Yes. Denny is older than 82 in 100 names on AgeByName.
Is Denny a boy or girl name?
Mostly boys: 97.1% of living Dennys are men.
Names the same age as Denny
NAME TWIN
Denny's name twin is Johnny. Of all 3,713 names on AgeByName, Johnny's age curve is the closest match to Denny's: 93% alike.
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Questions about the name Denny
How old is the average Denny?
The average Denny in the US is 54 years old. The median is 57, so half are older and half younger.
How many people are named Denny?
About 11,000 Dennys are alive in the US today, out of roughly 16,000 babies given the name since 1889.
When was the name Denny most popular?
In 1947, when about 450 baby boys were named Denny.
Is Denny a Boomer name?
Partly. Baby Boomers are the largest group, about 35% of living Dennys, 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