Counterfactual
The Parallel Lives of Seriah and Riley
In 11 girls, Seriah found its level. 50 years earlier, Riley occupied that same statistical address.
1994–2025
Seriah
Peak year
2008
Peak births
33
Latest count
11
Status
Stable
Peak generation
Gen Z
1923–2025
Riley
Peak year
2016
Peak births
7,159
Latest count
4,441
Status
Declining
Peak generation
Gen Alpha
Seriah 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.