Counterfactual
The Parallel Lives of Zoe and Jill
In 5,646 girls, Zoe found its level. 50 years earlier, Jill occupied that same statistical address.
1880–2025
Zoe
Peak year
2012
Peak births
6,466
Latest count
5,646
Status
Stable
Peak generation
Gen Z
1906–2025
Jill
Peak year
1966
Peak births
7,871
Latest count
21
Status
Endangered
Peak generation
Gen X
In 5,646 girls, Zoe found its level. 50 years earlier, Jill occupied that same address. One peaked in the Gen X era; the other in the Gen Z world. They never met. But the data remembers them both.