Counterfactual
The Parallel Lives of Keiko and Savannah
In 17 girls, Keiko found its level. 50 years earlier, Savannah occupied that same statistical address.
1922–2025
Keiko
Peak year
1995
Peak births
31
Latest count
17
Status
Stable
Peak generation
Millennial
1880–2025
Savannah
Peak year
2000
Peak births
7,100
Latest count
2,141
Status
Declining
Peak generation
Gen Z
Keiko and Savannah peaked in the same cultural weather — the Millennial naming world. They are not replacements; they are siblings separated by 50 years, occupying the same statistical address at different addresses in time.