How old is someone named Deirdre?
The average Deirdre is 54 years old.
Half of all living Deirdres are between 45 and 64.
When was Deirdre popular?
Parents have been choosing Deirdre less often since its peak in 1961; 13 babies got the name in 2025.
Popular names of 1961 · The most popular names of the 1960s →
Show the numbers by decade
| Born in | Babies born | Alive today |
|---|---|---|
| 1920s | 48 | 0 |
| 1930s | 167 | under 100 |
| 1940s | 822 | 500 |
| 1950s | 2,274 | 1,800 |
| 1960s | 6,321 | 5,600 |
| 1970s | 3,123 | 2,900 |
| 1980s | 2,049 | 2,000 |
| 1990s | 1,206 | 1,200 |
| 2000s | 544 | 540 |
| 2010s | 206 | 210 |
| 2020s | 85 | under 100 |
How many Deirdres are still alive?
About 15,000 Deirdres are alive in the US today. That's 88% of the roughly 17,000 babies named Deirdre since 1921.
Most Deirdres ever born are still alive.
What generation is the name Deirdre?
About two in five living Deirdres are Gen Xers, born between 1965 and 1980.
Is Deirdre an old name?
Yes. Deirdre is older than 82 in 100 names on AgeByName.
Is Deirdre a boy or girl name?
Almost entirely girls: over 99.9% of living Deirdres are women.
Names the same age as Deirdre
NAME TWIN
Deirdre's name twin is Jeffery. Of all 3,713 names on AgeByName, Jeffery's age curve is the closest match to Deirdre's: 91% alike.
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Questions about the name Deirdre
How old is the average Deirdre?
The average Deirdre in the US is 54 years old. The median is 57, so half are older and half younger.
How many people are named Deirdre?
About 15,000 Deirdres are alive in the US today, out of roughly 17,000 babies given the name since 1921.
When was the name Deirdre most popular?
In 1961, when about 800 baby girls were named Deirdre.
Is Deirdre a Gen X name?
Partly. Gen X are the largest group, about 38% of living Deirdres, 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