Sia
A girls’ name with no widely documented etymology.
Babies a year
63
England and Wales, 2025
Rarity
Uncommon
among names in use
US popularity
—
outside the top 1000
UK popularity
#622
63 babies · down from #565
In 2025, 63 babies in England and Wales were named Sia. In the US, 136 were, though that figure is from 2017 — the most recent full year we hold.
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