Counterfactual

The Parallel Lives of Cassidy and Alyssa

In 558 girls, Cassidy found its level. 50 years earlier, Alyssa occupied that same statistical address.

1969–2025

Cassidy

peak 1999 2025 1960198020002020
Peak year 1999
Peak births 3,395
Latest count 558
Status Declining
Peak generation Gen Z
1950–2025

Alyssa

peak 1999 2025 1960198020002020
Peak year 1999
Peak births 14,036
Latest count 680
Status Endangered
Peak generation Gen Z
Cassidy and Alyssa 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.