Counterfactual

The Parallel Lives of Jaci and Lilly

In 58 girls, Jaci found its level. 50 years earlier, Lilly occupied that same statistical address.

1934–2025

Jaci

peak 2005 2025 18801900192019401960198020002020
Peak year 2005
Peak births 221
Latest count 58
Status Declining
Peak generation Gen Z
1880–2025

Lilly

peak 2010 2025 18801900192019401960198020002020
Peak year 2010
Peak births 2,891
Latest count 1,218
Status Declining
Peak generation Gen Z
Jaci and Lilly 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.