How old is someone named Lily?
The average Lily is 16 years old.
Half of all living Lilys are between 8 and 20.
When was Lily popular?
Most of the Lilys in the country were born in the last 15 years. The name peaked in 2011 and is still near the top.
Popular names of 2011 · The most popular names of the 2010s →
Show the numbers by decade
| Born in | Babies born | Alive today |
|---|---|---|
| 1900s | 1,045 | 0 |
| 1910s | 2,795 | 0 |
| 1920s | 3,762 | under 100 |
| 1930s | 2,234 | 440 |
| 1940s | 1,511 | 840 |
| 1950s | 1,426 | 1,100 |
| 1960s | 1,148 | 1,000 |
| 1970s | 1,220 | 1,100 |
| 1980s | 2,714 | 2,600 |
| 1990s | 9,772 | 9,600 |
| 2000s | 56,263 | 56,000 |
| 2010s | 68,363 | 68,000 |
| 2020s | 35,877 | 36,000 |
How many Lilys are still alive?
About 180,000 Lilys are alive in the US today. That's 93% of the roughly 190,000 babies named Lily since 1880.
Nearly every Lily ever born is still alive, because almost all of them are young.
What generation is the name Lily?
About half of living Lilys are in Gen Z, born between 1997 and 2012.
Is Lily an old name?
No. Lily is one of the youngest names around: younger than 81 in 100 names on AgeByName.
Looking ahead: if babies keep getting the name at today's pace, the typical Lily will be 29 in 2056, so the name is aging slowly.
Is Lily a boy or girl name?
Almost entirely girls: 99.9% of living Lilys are women.
Names the same age as Lily
NAME TWIN
Lily's name twin is Reese. Of all 3,713 names on AgeByName, Reese's age curve is the closest match to Lily's: 96% alike.
Other spellings: Lilly (19) · Lillie (54)
Compare: Lillian vs. Lily · Lillie vs. Lily
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Questions about the name Lily
How old is the average Lily?
The average Lily in the US is 16 years old. The median is 15, so half are older and half younger.
How many people are named Lily?
About 180,000 Lilys are alive in the US today, out of roughly 190,000 babies given the name since 1880.
When was the name Lily most popular?
In 2011, when about 8,200 baby girls were named Lily.
Is Lily a Gen Z name?
Partly. Gen Z are the largest group, about 48% of living Lilys, 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