Counterfactual

The Parallel Lives of Sia and Callie

In 215 girls, Sia found its level. 50 years earlier, Callie occupied that same statistical address.

1968–2025

Sia

peak 2025 2025 18801900192019401960198020002020
Peak year 2025
Peak births 215
Latest count 215
Status Rising
Peak generation Gen Alpha
1880–2025

Callie

peak 2014 2025 18801900192019401960198020002020
Peak year 2014
Peak births 1,763
Latest count 1,754
Status Stable
Peak generation Gen Alpha
Sia and Callie 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.