Mostly boys · peaked in 1957
Kirby name popularity since 1925
17,529 babies born in the US from 1925 to 2025 were named Kirby (22.5% girls, 77.5% boys). Half of them were born in 1972 or earlier, so the typical Kirby is about 54 years old in 2026. Kirby peaked in 1957 as the #411 name for boys, and it was outside the top 1,000 in 2025.
Key facts
- US babies since 1925
- 17,529
- Named Kirby, 1925–2025
- In 2025
- Not top 1,000
- #3,278 for boys in 2025
- Girls / boys
- 77.5% boys
- 3,949 girls · 13,580 boys
- Most popular in
- Louisiana
- 3.97× its national share
Peak year is the year Kirby 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.
Kirby births per year, 1925–2025
1957 was the biggest year for Kirby both by count and as a share of all babies.
- Fastest rise: Between 1945 and 1950, Kirby became 1.6× more common, from 1 in 12,700 baby boys to 1 in 7,920.
- Steepest fall: Between 1971 and 1976, its share of baby boys fell by 54%, from 1 in 6,100 to 1 in 13,300.
Shaded on the chart. Both compare Kirby's share of all US boys five years apart, counting only years with at least 100 babies named Kirby.
Decade by decade
Babies named Kirby 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 | 5 | 308 | – |
| 1930s | 15 | 731 | #745 |
| 1940s | 101 | 1,509 | #587 |
| 1950s | 121 | 3,009 | #450 |
| 1960s | 108 | 2,351 | #527 |
| 1970s | 85 | 1,589 | #688 |
| 1980s | 1,464 | 1,338 | #791 |
| 1990s | 1,113 | 1,408 | #979 |
| 2000s | 275 | 596 | #2,350 |
| 2010s | 309 | 471 | #2,377 |
| 2020–25 | 353 | 270 | #3,278 |
Ranks count every name given to at least 5 boys that year, so they can go past 1,000.
Generation fingerprint
31.0% of babies named Kirby from 1925 to 2025 were born in the Baby Boom years (1946–1964). The full split by generation:
Where Kirby is most popular
The index compares Kirby'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 Kirby.
| State | Index | Babies |
|---|---|---|
| Louisiana | 3.97× | 750 |
| Texas | 2.34× | 1,933 |
| North Carolina | 2.11× | 629 |
| Missouri | 1.53× | 352 |
| Indiana | 1.30× | 323 |
Names with a similar story
Of the other 1999 names on this site, these six had the share of babies closest in shape to Kirby's from 1925 to 2025, however common each one got. Each line is scaled to its own high; the dashed line is Kirby.
Names from the same era
Other common names that peaked within two years of Kirby (1957).
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