The name reached its all-time peak in 2020 with 42 births ranking #2867. FALLING Recent data shows the name is currently falling.
Londyn is a modern spelling of London that keeps the same place-name identity with a more contemporary visual style. It feels fashionable and city-bright.
This spelling rose as parents adapted place names to match current naming tastes. The change is visual rather than historical, since the name still points back to London.