Dierdre vs Dieter
American parents have registered 1,115 Dierdres since 1880, against 915 Dieters. Neither name reached five babies in 2025.
Babies given each name, 1880–2025
Dierdre Dieter
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 79 years in which either name was published, Dierdre for 46 years and Dieter for 33 years. The lead changed hands 15 times.
- 1941–1985 Dierdre ahead, apart from 3 short spells
- 1994–2023 Dieter ahead, apart from one short spell
10 shorter spells of a year or two are folded into the spans above rather than listed separately.
Side by side
| Dierdre | Dieter | |
|---|---|---|
| Total US births | 1,115 | 915 |
| Most in one year | 63 | 36 |
| Babies in 2025 | under 5 | under 5 |
| Estimated living today | 980 | 810 |
| Median age today | 58 | 46 |
| Peak year | 1961 | 1967 |
| Best rank | 1,406th girls | 1,253rd boys |
| Rank in 2025 | unranked | unranked |
| First recorded | 1941 | 1953 |
| Girls / boys | 1,115 / 0 | 0 / 915 |
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 Dierdres alive today are over 58; half the Dieters are over 46. That is 12 years between them: two names in use at the same time, worn by two different generations.
Where each one is strongest
- Dierdre New York (8.0×), California (2.4×)
- Dieter California (5.7×), New York (3.1×)
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: Dierdre and Dieter.