Girls' name · peaked in 1983
Erin name popularity since 1925
325,548 babies born in the US from 1925 to 2025 were named Erin (97.1% girls, 2.9% boys). Half of them were born in 1984 or earlier, so the typical Erin is about 42 years old in 2026. Erin peaked in 1983 as the #18 name for girls, and it ranked #833 in 2025.
Key facts
- US babies since 1925
- 325,548
- Named Erin, 1925–2025
- In 2025
- #833
- for girls in 2025 (327 babies)
- Girls / boys
- 97.1% girls
- 316,100 girls · 9,448 boys
- Most popular in
- Delaware
- 1.76× its national share
Peak year is the year Erin 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.
Erin births per year, 1925–2025
1983 was the biggest year for Erin both by count and as a share of all babies.
- Fastest rise: Between 1954 and 1959, Erin became 6.7× more common, from 1 in 11,100 baby girls to 1 in 1,650.
- Steepest fall: Between 2004 and 2009, its share of baby girls fell by 50%, from 1 in 545 to 1 in 1,080.
Shaded on the chart. Both compare Erin's share of all US girls five years apart, counting only years with at least 100 babies named Erin.
Decade by decade
Babies named Erin 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 | 60 | 0 | – |
| 1930s | 198 | 12 | #1,736 |
| 1940s | 536 | 51 | #1,125 |
| 1950s | 4,382 | 209 | #715 |
| 1960s | 15,570 | 948 | #220 |
| 1970s | 67,888 | 2,881 | #38 |
| 1980s | 115,811 | 2,202 | #26 |
| 1990s | 65,335 | 1,635 | #49 |
| 2000s | 33,370 | 826 | #112 |
| 2010s | 10,285 | 494 | #336 |
| 2020–25 | 2,665 | 190 | #833 |
Ranks count every name given to at least 5 girls that year, so they can go past 1,000.
Generation fingerprint
47.4% of babies named Erin from 1925 to 2025 were born in the Millennial years (1981–1996). The full split by generation:
Where Erin is most popular
The index compares Erin'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 Erin.
| State | Index | Babies |
|---|---|---|
| Delaware | 1.76× | 1,182 |
| Vermont | 1.76× | 954 |
| New Hampshire | 1.71× | 1,745 |
| Alaska | 1.65× | 794 |
| Rhode Island | 1.57× | 1,803 |
Other spellings
Spellings that sound like Erin 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 |
|---|---|---|
| Erin (this page) | 316,100 | 1983 |
| Eryn | 7,415 | 2000 |
| Erinn | 3,418 | 1990 |
Names with a similar story
Of the other 499 names on this site, these six had the share of babies closest in shape to Erin's from 1925 to 2025, however common each one got. Each line is scaled to its own high; the dashed line is Erin.
Names from the same era
Other common names that peaked within two years of Erin (1983).
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