Counterfactual
The Parallel Lives of Kaiya and Antonia
In 255 girls, Kaiya found its level. 50 years earlier, Antonia occupied that same statistical address.
1974–2025
Kaiya
Peak year
2002
Peak births
389
Latest count
255
Status
Stable
Peak generation
Gen Z
1880–2025
Antonia
Peak year
1996
Peak births
669
Latest count
175
Status
Stable
Peak generation
Millennial
Kaiya and Antonia peaked in the same cultural weather — the Gen Z naming world. They are not replacements; they are siblings separated by 50 years, occupying the same statistical address at different addresses in time.