How old is someone named Kelli?
The average Kelli is 47 years old.
Half of all living Kellis are between 39 and 56.
When was Kelli popular?
Parents have been choosing Kelli less often since its peak in 1970; 17 babies got the name in 2025.
Popular names of 1970 · The most popular names of the 1970s →
Show the numbers by decade
| Born in | Babies born | Alive today |
|---|---|---|
| 1940s | 19 | under 100 |
| 1950s | 1,986 | 1,600 |
| 1960s | 16,919 | 15,000 |
| 1970s | 21,637 | 20,000 |
| 1980s | 21,175 | 20,000 |
| 1990s | 10,263 | 10,000 |
| 2000s | 2,570 | 2,500 |
| 2010s | 490 | 490 |
| 2020s | 133 | 130 |
How many Kellis are still alive?
About 71,000 Kellis are alive in the US today. That's 94% of the roughly 75,000 babies named Kelli since 1945.
Nearly every Kelli ever born is still alive, because almost all of them are young.
What generation is the name Kelli?
About half of living Kellis are Gen Xers, born between 1965 and 1980.
- Boomer 10%
- Gen X 46%
- Millennial 37%
- Gen Z 6%
- Gen Alpha under 1%
Is Kelli an old name?
Yes. Kelli is older than 75 in 100 names on AgeByName.
Is Kelli a boy or girl name?
Almost entirely girls: 99.6% of living Kellis are women.
Names the same age as Kelli
NAME TWIN
Kelli's name twin is Kari. Of all 3,713 names on AgeByName, Kari's age curve is the closest match to Kelli's: 89% alike.
Other spellings: Kelly (48) · Kellie (47) · Kelley (50)
Compare: Kelli vs. Kelly
Think you can guess a Ashley's age?
Ten names, one slider each. Share your score.
Questions about the name Kelli
How old is the average Kelli?
The average Kelli in the US is 47 years old. The median is 47, so half are older and half younger.
How many people are named Kelli?
About 71,000 Kellis are alive in the US today, out of roughly 75,000 babies given the name since 1945.
When was the name Kelli most popular?
In 1970, when about 3,300 baby girls were named Kelli.
Is Kelli a Gen X name?
Partly. Gen X are the largest group, about 46% of living Kellis, 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