Counterfactual

The Parallel Lives of Johanna and Kasey

In 309 girls, Johanna found its level. 50 years earlier, Kasey occupied that same statistical address.

1880–2025

Johanna

peak 1984 2025 18801900192019401960198020002020
Peak year 1984
Peak births 919
Latest count 309
Status Declining
Peak generation Millennial
1950–2025

Kasey

peak 1992 2025 18801900192019401960198020002020
Peak year 1992
Peak births 1,394
Latest count 105
Status Endangered
Peak generation Millennial
Johanna and Kasey 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.