Irbin vs Irby
American parents have registered 1,130 Irbys since 1880, against 116 Irbins. Neither name reached five babies in 2025.
Babies given each name, 1880–2025
Irbin Irby
Each line is every baby given the name that year, girls and boys added together — the only count that means the same thing for both names. A line breaks where the name fell below five babies in a year — the point at which the SSA stops publishing it — rather than being drawn through a figure nobody published. A single published year in a gap shows as a dot.
Who was ahead
Of the 85 years in which either name was published, Irby for 71 years and Irbin for 14 years. The lead changed hands once.
Side by side
| Irbin | Irby | |
|---|---|---|
| Total US births | 116 | 1,130 |
| Most in one year | 17 | 39 |
| Babies in 2025 | under 5 | under 5 |
| Estimated living today | 110 | 300 |
| Median age today | 26 | 71 |
| Peak year | 1991 | 1918 |
| Best rank | 3,462nd boys | 1,124th boys |
| Rank in 2025 | unranked | unranked |
| First recorded | 1991 | 1896 |
| Girls / boys | 0 / 116 | 26 / 1,104 |
A rank is a position within one sex’s list for one year, so the two rank rows are not subtracted from one another and the winning column is not marked on them. The living figure is a life-table estimate, not a count.
Which name is older
Half of the Irbys alive today are over 71; half the Irbins are over 26. That is 45 years between them: two names in use at the same time, worn by two different generations.
Compare something else
Social Security Administration birth records, 1880–2025, public domain. Full histories: Irbin and Irby.