Counterfactual

The Parallel Lives of Stefania and Kaylee

In 25 girls, Stefania found its level. 50 years earlier, Kaylee occupied that same statistical address.

1901–2025

Stefania

peak 2004 2025 192019401960198020002020
Peak year 2004
Peak births 60
Latest count 25
Status Stable
Peak generation Gen Z
1943–2025

Kaylee

peak 2009 2025 192019401960198020002020
Peak year 2009
Peak births 7,219
Latest count 1,205
Status Declining
Peak generation Gen Z
Stefania and Kaylee 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.