Katlyn Girl
How popular is Katlyn?
#8,360 girl name in 2025
12 baby girls were named Katlyn in the US in 2025, making it the 8360th most popular girl name.
18,165living people named Katlyn (est.)
29median age of people named Katlyn
18,438babies named Katlyn since 1880
1 in 276,279US babies born in 2025
Katlyn popularity over time
Boys Girls
| Rank in 2025 | #8,360 for girls (▼ 2920 from 2024) |
|---|---|
| Babies in 2025 | 12 girls |
| 10-year trend | Falling fast (-76% babies vs 2015) |
| Earlier ranks | #3,254 in 2015, #8,948 in 2020 |
| Peak year | 1995 (1,260 girls) |
| Highest rank | #223 in 1995 |
| First recorded | 1979 |
| Boys vs girls (last 10 years) | 0% boys, 100% girls |
| Chance a classmate shares it | 0.0% in a class of 25 kids born in 2025 |
Katlyn counting every spelling
Social Security counts each spelling as its own name. Adding together the spellings that sound alike, the Kaitlyn family of names ranked #361 for girls in 2025 (#294 the year before), with 882 babies in all.
| Spelling | Girls in 2025 | Share |
|---|---|---|
| Kaitlyn | 340 | 39% |
| Katelyn | 225 | 26% |
| Caitlyn | 71 | 8% |
| Katelynn | 63 | 7% |
| Caitlin | 78 | 9% |
| Kaitlynn | 41 | 5% |
| Kaitlin | 35 | 4% |
| Caitlynn | 11 | 1% |
| Katlyn | 12 | 1% |
| Kaytlyn | 6 | 1% |
Spellings are grouped by how they sound, using our own rules, so a few groupings may not match how your family says the name.
Katlyn by decade
| Decade | Baby girls | Best rank |
|---|---|---|
| 1970s | 7 | #8,059 |
| 1980s | 1,917 | #400 |
| 1990s | 10,718 | #223 |
| 2000s | 5,077 | #330 |
| 2010s | 624 | #1,536 |
| 2020s | 90 | #5,440 |
Girl names about as popular as Katlyn
Questions
- Is Katlyn a boy or girl name?
- Katlyn is mostly a girl name. Over the last 10 years, 100% of babies named Katlyn were girls.
- How popular is the name Katlyn?
- 12 baby girls were named Katlyn in the US in 2025, making it the 8360th most popular girl name.
- When was Katlyn most popular?
- Katlyn peaked in 1995, when 1,260 girls were given the name. Its highest rank was #223 in 1995.
- How many people are named Katlyn?
- 18,438 babies have been named Katlyn in the US since 1880. We estimate about 18,165 of them are alive in 2026, with a median age of 29.
Source: Social Security Administration baby name data, 1880 to 2025 (names given to at least 5 babies of a sex in a year). Living-people and median-age figures are our estimates using US life tables. How we calculate.