Counterfactual

The Parallel Lives of Addeline and Isabella

In 31 girls, Addeline found its level. 50 years earlier, Isabella occupied that same statistical address.

1921–2025

Addeline

peak 2016 2025 18801900192019401960198020002020
Peak year 2016
Peak births 52
Latest count 31
Status Declining
Peak generation Gen Alpha
1880–2025

Isabella

peak 2010 2025 18801900192019401960198020002020
Peak year 2010
Peak births 22,936
Latest count 10,666
Status Declining
Peak generation Gen Z
Addeline and Isabella peaked in the same cultural weather — the Gen Alpha naming world. They are not replacements; they are siblings separated by 50 years, occupying the same statistical address at different addresses in time.