Thad vs Thaily
American parents have registered 8,224 Thads since 1880, against 505 Thailys. But in 2025 it was Thaily that was commoner, 14 babies to 8.
Babies given each name, 1880–2025
Thad Thaily
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 146 years in which either name was published, Thad for 133 years and Thaily for 13 years. The lead changed hands 11 times.
Side by side
| Thad | Thaily | |
|---|---|---|
| Total US births | 8,224 | 505 |
| Most in one year | 365 | 90 |
| Babies in 2025 | 8 | 14 |
| Estimated living today | 5,600 | 500 |
| Median age today | 54 | 12 |
| Peak year | 1967 | 2011 |
| Best rank | 401st boys | 2,124th girls |
| Rank in 2025 | 8,910th | 7,491st |
| First recorded | 1880 | 2002 |
| Girls / boys | 5 / 8,219 | 505 / 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 Thads alive today are over 54; half the Thailys are over 12. That is 42 years between them: two names in use at the same time, worn by two different generations.
Where each one is strongest
- Thad South Dakota (4.1×), North Carolina (4.1×), Iowa (3.0×)
- Thaily Texas (6.7×), California (4.1×)
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: Thad and Thaily.