Counterfactual
The Parallel Lives of Kaylee and Rosa
In 1,205 girls, Kaylee found its level. 50 years earlier, Rosa occupied that same statistical address.
1943–2025
Kaylee
Peak year
2009
Peak births
7,219
Latest count
1,205
Status
Declining
Peak generation
Gen Z
1880–2025
Rosa
Peak year
1925
Peak births
2,230
Latest count
441
Status
Stable
Peak generation
Greatest Generation
In 1,205 girls, Kaylee found its level. 50 years earlier, Rosa occupied that same address. One peaked in the Greatest Generation era; the other in the Gen Z world. They never met. But the data remembers them both.