Counterfactual

The Parallel Lives of Ilsa and Lyla

In 22 girls, Ilsa found its level. 50 years earlier, Lyla occupied that same statistical address.

1943–2025

Ilsa

peak 2011 2025 1900192019401960198020002020
Peak year 2011
Peak births 34
Latest count 22
Status Stable
Peak generation Gen Z
1884–2025

Lyla

peak 2025 2025 1900192019401960198020002020
Peak year 2025
Peak births 3,089
Latest count 3,089
Status Rising
Peak generation Gen Alpha
Ilsa and Lyla 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.