Counterfactual
The Parallel Lives of Cathy and Brooklyn
In 12 girls, Cathy found its level. 50 years earlier, Brooklyn occupied that same statistical address.
1918–2025
Cathy
Peak year
1958
Peak births
10,942
Latest count
12
Status
Endangered
Peak generation
Boomer
1972–2025
Brooklyn
Peak year
2011
Peak births
7,178
Latest count
2,300
Status
Declining
Peak generation
Gen Z
In 12 girls, Cathy found its level. 50 years earlier, Brooklyn occupied that same address. One peaked in the Gen Z era; the other in the Boomer world. They never met. But the data remembers them both.