Counterfactual

The Parallel Lives of Josselyn and Hailey

In 24 girls, Josselyn found its level. 50 years earlier, Hailey occupied that same statistical address.

1974–2025

Josselyn

peak 2007 2025 198020002020
Peak year 2007
Peak births 257
Latest count 24
Status Endangered
Peak generation Gen Z
1963–2025

Hailey

peak 2003 2025 198020002020
Peak year 2003
Peak births 8,798
Latest count 2,556
Status Declining
Peak generation Gen Z
Josselyn and Hailey 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.