Counterfactual

The Parallel Lives of Matilyn and Riley

In 11 girls, Matilyn found its level. 50 years earlier, Riley occupied that same statistical address.

1994–2025

Matilyn

peak 2008 2025 19401960198020002020
Peak year 2008
Peak births 63
Latest count 11
Status Declining
Peak generation Gen Z
1923–2025

Riley

peak 2016 2025 19401960198020002020
Peak year 2016
Peak births 7,159
Latest count 4,441
Status Declining
Peak generation Gen Alpha
Matilyn and Riley 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.