Boys' name · peaked in 1966
Jeffrey name popularity since 1925
982,818 babies born in the US from 1925 to 2025 were named Jeffrey. Half of them were born in 1968 or earlier, so the typical Jeffrey is about 58 years old in 2026. Jeffrey peaked in 1966 as the #9 name for boys, and it ranked #552 in 2025.
Key facts
- US babies since 1925
- 982,818
- Named Jeffrey, 1925–2025
- In 2025
- #552
- for boys in 2025 (544 babies)
- Girls / boys
- 99.6% boys
- 3,498 girls · 979,320 boys
- Most popular in
- Wisconsin
- 1.64× its national share
Peak year is the year Jeffrey made up the largest share of US boys, in records going back to 1880. Typical age is based on births from 1925 on, not on who is living today.
Jeffrey births per year, 1925–2025
The biggest year by count was 1962. Measured as a share of all babies, Jeffrey peaked in 1966.
- Fastest rise: Between 1938 and 1943, Jeffrey became 11× more common, from 1 in 7,110 baby boys to 1 in 657.
- Steepest fall: Between 1989 and 1994, its share of baby boys fell by 44%, from 1 in 167 to 1 in 296.
Shaded on the chart. Both compare Jeffrey's share of all US boys five years apart, counting only years with at least 100 babies named Jeffrey.
Decade by decade
Babies named Jeffrey in each decade, and its rank among boys' names in the middle year of the decade (1935, 1945 … 2025).
| Decade | Girls | Boys | Rank |
|---|---|---|---|
| 1925–29 | 0 | 134 | – |
| 1930s | 0 | 903 | #975 |
| 1940s | 123 | 34,340 | #91 |
| 1950s | 372 | 184,668 | #20 |
| 1960s | 925 | 302,029 | #10 |
| 1970s | 968 | 202,850 | #14 |
| 1980s | 884 | 144,789 | #29 |
| 1990s | 183 | 66,987 | #64 |
| 2000s | 38 | 25,918 | #171 |
| 2010s | 5 | 12,746 | #290 |
| 2020–25 | 0 | 3,956 | #552 |
Ranks count every name given to at least 5 boys that year, so they can go past 1,000.
Generation fingerprint
37.2% of babies named Jeffrey from 1925 to 2025 were born in the Gen X years (1965–1980). The full split by generation:
Where Jeffrey is most popular
The index compares Jeffrey'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 Jeffrey.
| State | Index | Babies |
|---|---|---|
| Wisconsin | 1.64× | 32,035 |
| Vermont | 1.56× | 2,572 |
| Delaware | 1.55× | 3,180 |
| New Hampshire | 1.53× | 4,781 |
| Connecticut | 1.52× | 16,281 |
Other spellings
Spellings that sound like Jeffrey and were given to at least 1,000 boys from 1925 to 2025, with the year each one was most popular.
| Spelling | Boys | Peak year |
|---|---|---|
| Jeffrey (this page) | 979,320 | 1966 |
| Jeffery | 230,313 | 1962 |
| Jeffry | 15,394 | 1956 |
Names with a similar story
Of the other 499 names on this site, these six had the share of babies closest in shape to Jeffrey's from 1925 to 2025, however common each one got. Each line is scaled to its own high; the dashed line is Jeffrey.
Names from the same era
Other common names that peaked within two years of Jeffrey (1966).
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