How old is someone named Demario?
The average Demario is 31 years old.
Half of all living Demarios are between 20 and 40.
When was Demario popular?
Demario was at its most popular in the late 1980s. Parents have been moving away from it for decades, and 30 babies were named Demario in 2025.
Popular names of 1988 · The most popular names of the 1980s →
Show the numbers by decade
| Born in | Babies born | Alive today |
|---|---|---|
| 1960s | 13 | under 100 |
| 1970s | 487 | 440 |
| 1980s | 2,235 | 2,100 |
| 1990s | 1,453 | 1,400 |
| 2000s | 1,095 | 1,100 |
| 2010s | 818 | 810 |
| 2020s | 280 | 280 |
How many Demarios are still alive?
About 6,100 Demarios are alive in the US today. That's 96% of the roughly 6,400 babies named Demario since 1968.
Nearly every Demario ever born is still alive, because almost all of them are young.
What generation is the name Demario?
About half of living Demarios are Millennials, born between 1981 and 1996.
- Gen X 10%
- Millennial 50%
- Gen Z 28%
- Gen Alpha 13%
Is Demario an old name?
Somewhat. Demario is older than 53 in 100 names on AgeByName, but younger than plenty of classics.
Is Demario a boy or girl name?
Almost entirely boys: 99.7% of living Demarios are men.
Names the same age as Demario
NAME TWIN
Demario's name twin is Jamar. Of all 3,713 names on AgeByName, Jamar's age curve is the closest match to Demario's: 91% alike.
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Questions about the name Demario
How old is the average Demario?
The average Demario in the US is 31 years old. The median is 34, so half are older and half younger.
How many people are named Demario?
About 6,100 Demarios are alive in the US today, out of roughly 6,400 babies given the name since 1968.
When was the name Demario most popular?
In 1988, when about 340 baby boys were named Demario.
Is Demario a Millennial name?
Partly. Millennials are the largest group, about 50% of living Demarios, 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