How old is someone named Demi?
The average Demi is 14 years old.
Half of all living Demis are between 5 and 23.
When was Demi popular?
Most of the Demis in the country were born in the last 15 years. The name peaked in 2020 and is still near the top.
Popular names of 2020 · The most popular names of the 2020s →
Show the numbers by decade
| Born in | Babies born | Alive today |
|---|---|---|
| 1960s | 10 | under 100 |
| 1970s | 7 | under 100 |
| 1980s | 234 | 230 |
| 1990s | 2,956 | 2,900 |
| 2000s | 1,778 | 1,800 |
| 2010s | 5,083 | 5,100 |
| 2020s | 4,853 | 4,800 |
How many Demis are still alive?
About 15,000 Demis are alive in the US today. That's over 99% of the roughly 15,000 babies named Demi since 1964.
Nearly every Demi ever born is still alive, because almost all of them are young.
What generation is the name Demi?
More than half of living Demis are in Gen Alpha, born in 2013 or later.
- Millennial 16%
- Gen Z 23%
- Gen Alpha 60%
Is Demi an old name?
No. Demi is one of the youngest names around: younger than 85 in 100 names on AgeByName.
Looking ahead: if babies keep getting the name at today's pace, the typical Demi will be 26 in 2056, so the name is aging slowly.
Is Demi a boy or girl name?
Almost entirely girls: 99.7% of living Demis are women.
Names the same age as Demi
NAME TWIN
Demi's name twin is Aspen. Of all 3,713 names on AgeByName, Aspen's age curve is the closest match to Demi's: 88% alike.
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Questions about the name Demi
How old is the average Demi?
The average Demi in the US is 14 years old. The median is 10, so half are older and half younger.
How many people are named Demi?
About 15,000 Demis are alive in the US today, out of roughly 15,000 babies given the name since 1964.
When was the name Demi most popular?
In 2020, when about 910 baby girls were named Demi.
Is Demi a Gen Alpha name?
Yes. About 60% of living Demis are in Gen Alpha, born in 2013 or later.
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