Counterfactual
The Parallel Lives of Johnna and Mackenzie
In 14 girls, Johnna found its level. 50 years earlier, Mackenzie occupied that same statistical address.
1919–2025
Johnna
Peak year
1963
Peak births
617
Latest count
14
Status
Endangered
Peak generation
Boomer
1973–2025
Mackenzie
Peak year
2001
Peak births
6,934
Latest count
1,343
Status
Declining
Peak generation
Gen Z
In 14 girls, Johnna found its level. 50 years earlier, Mackenzie 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.