Girls' name · peaked in 1943
Eileen name popularity since 1925
160,856 babies born in the US from 1925 to 2025 were named Eileen. Half of them were born in 1952 or earlier, so the typical Eileen is about 74 years old in 2026. Eileen peaked in 1943 as the #68 name for girls, and it ranked #654 in 2025.
Key facts
- US babies since 1925
- 160,856
- Named Eileen, 1925–2025
- In 2025
- #654
- for girls in 2025 (437 babies)
- Girls / boys
- 99.8% girls
- 160,473 girls · 383 boys
- Most popular in
- New York
- 3.21× its national share
Peak year is the year Eileen 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.
Eileen births per year, 1925–2025
The biggest year by count was 1947. Measured as a share of all babies, Eileen peaked in 1943.
- Fastest rise: Between 1940 and 1945, Eileen became 1.6× more common, from 1 in 562 baby girls to 1 in 359.
- Steepest fall: Between 1966 and 1971, its share of baby girls fell by 48%, from 1 in 830 to 1 in 1,610.
Shaded on the chart. Both compare Eileen's share of all US girls five years apart, counting only years with at least 100 babies named Eileen.
Decade by decade
Babies named Eileen 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 | 14,023 | 24 | – |
| 1930s | 22,258 | 91 | #108 |
| 1940s | 34,695 | 108 | #70 |
| 1950s | 36,570 | 78 | #120 |
| 1960s | 24,868 | 58 | #157 |
| 1970s | 7,915 | 17 | #336 |
| 1980s | 5,689 | 7 | #403 |
| 1990s | 4,109 | 0 | #604 |
| 2000s | 3,801 | 0 | #717 |
| 2010s | 3,836 | 0 | #698 |
| 2020–25 | 2,709 | 0 | #654 |
Ranks count every name given to at least 5 girls that year, so they can go past 1,000.
Generation fingerprint
42.4% of babies named Eileen from 1925 to 2025 were born in the Baby Boom years (1946–1964). The full split by generation:
Where Eileen is most popular
The index compares Eileen'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 Eileen.
| State | Index | Babies |
|---|---|---|
| New York | 3.21× | 38,626 |
| New Jersey | 2.84× | 12,421 |
| Massachusetts | 2.54× | 9,581 |
| Rhode Island | 2.39× | 1,342 |
| Pennsylvania | 2.19× | 17,632 |
Names with a similar story
Of the other 499 names on this site, these six had the share of babies closest in shape to Eileen's from 1925 to 2025, however common each one got. Each line is scaled to its own high; the dashed line is Eileen.
Names from the same era
Other common names that peaked within two years of Eileen (1943).
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