How old is someone named Cecily?
The average Cecily is 32 years old.
Half of all living Cecilys are between 13 and 43.
When was Cecily popular?
Cecily is a steady name: popular for generations, with a peak in 1989 but no single era. You'll meet Cecilys of every age.
Popular names of 1989 · The most popular names of the 1980s →
Show the numbers by decade
| Born in | Babies born | Alive today |
|---|---|---|
| 1910s | 31 | 0 |
| 1920s | 117 | 0 |
| 1930s | 168 | under 100 |
| 1940s | 287 | 170 |
| 1950s | 483 | 380 |
| 1960s | 425 | 370 |
| 1970s | 882 | 830 |
| 1980s | 1,288 | 1,200 |
| 1990s | 1,582 | 1,600 |
| 2000s | 1,009 | 1000 |
| 2010s | 1,633 | 1,600 |
| 2020s | 768 | 760 |
How many Cecilys are still alive?
About 8,000 Cecilys are alive in the US today. That's 92% of the roughly 8,700 babies named Cecily since 1911.
Nearly every Cecily ever born is still alive, because almost all of them are young.
What generation is the name Cecily?
About one in four living Cecilys are Millennials, born between 1981 and 1996.
Is Cecily an old name?
Somewhat. Cecily is older than 54 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 Cecily will be 41 in 2056, so the name is aging slowly.
Is Cecily a boy or girl name?
Almost entirely girls: over 99.9% of living Cecilys are women.
Names the same age as Cecily
NAME TWIN
Cecily's name twin is Marcel. Of all 3,713 names on AgeByName, Marcel's age curve is the closest match to Cecily's: 84% alike.
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Questions about the name Cecily
How old is the average Cecily?
The average Cecily in the US is 32 years old. The median is 31, so half are older and half younger.
How many people are named Cecily?
About 8,000 Cecilys are alive in the US today, out of roughly 8,700 babies given the name since 1911.
When was the name Cecily most popular?
In 1989, when about 470 baby girls were named Cecily.
Is Cecily a Millennial name?
Partly. Millennials are the largest group, about 30% of living Cecilys, 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