Deidre vs Deisy
American parents have registered 14,684 Deidres since 1880, against 3,107 Deisys. But in 2025 it was Deisy that was commoner, 35 babies to 8.
Babies given each name, 1880–2025
Deidre Deisy
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 92 years in which either name was published, Deidre for 63 years and Deisy for 29 years. The lead changed hands 3 times.
Side by side
| Deidre | Deisy | |
|---|---|---|
| Total US births | 14,684 | 3,107 |
| Most in one year | 541 | 137 |
| Babies in 2025 | 8 | 35 |
| Estimated living today | 13,000 | 3,100 |
| Median age today | 52 | 22 |
| Peak year | 1963 | 2006 |
| Best rank | 413th girls | 1,574th girls |
| Rank in 2025 | 10,917th | 4,067th |
| First recorded | 1933 | 1972 |
| Girls / boys | 14,673 / 11 | 3,107 / 0 |
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 Deidres alive today are over 52; half the Deisys are over 22. That is 30 years between them: two names in use at the same time, worn by two different generations.
Where each one is strongest
- Deidre Louisiana (2.3×), Georgia (1.7×), New York (1.7×)
- Deisy California (4.9×), Texas (3.4×), Arizona (1.8×)
How much commoner the name is in that state than it is nationally, from births recorded since 1910.
Compare something else
Related comparisons
Social Security Administration birth records, 1880–2025, public domain. Full histories: Deidre and Deisy.