Girls' name · peaked in 1995
Katlyn name popularity since 1925
18,438 babies born in the US from 1925 to 2025 were named Katlyn. Half of them were born in 1997 or earlier, so the typical Katlyn is about 29 years old in 2026. Katlyn peaked in 1995 as the #223 name for girls, and it was outside the top 1,000 in 2025.
Key facts
- US babies since 1925
- 18,438
- Named Katlyn, 1925–2025
- In 2025
- Not top 1,000
- #8,612 for girls in 2025
- Girls / boys
- 100.0% girls
- 18,433 girls · 5 boys
- Most popular in
- Kentucky
- 1.86× its national share
Peak year is the year Katlyn made up the largest share of US girls, in records going back to 1880. Typical age is based on births from 1925 on, not on who is living today.
Katlyn births per year, 1925–2025
1995 was the biggest year for Katlyn both by count and as a share of all babies.
- Fastest rise: Between 1985 and 1990, Katlyn became 5× more common, from 1 in 12,200 baby girls to 1 in 2,440.
- Steepest fall: Between 2005 and 2010, its share of baby girls fell by 67%, from 1 in 4,040 to 1 in 12,300.
Shaded on the chart. Both compare Katlyn's share of all US girls five years apart, counting only years with at least 100 babies named Katlyn.
Decade by decade
Babies named Katlyn in each decade, and its rank among girls' names in the middle year of the decade (1935, 1945 … 2025).
| Decade | Girls | Boys | Rank |
|---|---|---|---|
| 1925–29 | 0 | 0 | – |
| 1930s | 0 | 0 | Under 5 |
| 1940s | 0 | 0 | Under 5 |
| 1950s | 0 | 0 | Under 5 |
| 1960s | 0 | 0 | Under 5 |
| 1970s | 7 | 0 | Under 5 |
| 1980s | 1,917 | 5 | #1,052 |
| 1990s | 10,718 | 0 | #223 |
| 2000s | 5,077 | 0 | #619 |
| 2010s | 624 | 0 | #3,277 |
| 2020–25 | 90 | 0 | #8,612 |
Ranks count every name given to at least 5 girls that year, so they can go past 1,000. "Under 5" means fewer than 5 girls got the name.
Generation fingerprint
49.6% of babies named Katlyn from 1925 to 2025 were born in the Millennial years (1981–1996). The full split by generation:
Where Katlyn is most popular
The index compares Katlyn's share of babies in each state with its share nationwide, 1925–2025 (1.50× = 50% more common). States with at least 300 babies named Katlyn.
| State | Index | Babies |
|---|---|---|
| Kentucky | 1.86× | 536 |
| Tennessee | 1.80× | 654 |
| North Carolina | 1.71× | 837 |
| Alabama | 1.51× | 459 |
| Indiana | 1.51× | 615 |
Other spellings
Spellings that sound like Katlyn and were given to at least 1,000 girls from 1925 to 2025, with the year each one was most popular.
| Spelling | Girls | Peak year |
|---|---|---|
| Katlyn (this page) | 18,433 | 1995 |
| Katlin | 5,335 | 1993 |
| Katlynn | 3,975 | 1999 |
Names with a similar story
Of the other 1999 names on this site, these six had the share of babies closest in shape to Katlyn's from 1925 to 2025, however common each one got. Each line is scaled to its own high; the dashed line is Katlyn.
Names from the same era
Other common names that peaked within two years of Katlyn (1995).
Source: U.S. Social Security Administration national and state baby-name data, which covers names given to at least 5 babies of one sex in a year. About the data