Holding steady, #9,714 for boys today.
Popularity of Isaia since 1985
Babies named Isaia per year in U.S. Social Security records. Raw births topped out in 2007, but relative to how few babies were recorded back then, Isaia's real moment was 1999.
Data table (by decade)
| Decade | Boys |
|---|---|
| 1980s | 6 |
| 1990s | 102 |
| 2000s | 188 |
| 2010s | 123 |
| 2020s | 61 |
Meaning & origin
Isaia is an Italian form of the biblical name Isaiah, connecting it to a long tradition of prophetic names in Christian culture. Though rarely used in the United States (ranked 9,714 in 2025 with only 1 in 244,011 boys receiving it), it has seen a slow but stable presence since first appearing in Social Security records in 1985. The name reached its peak popularity in 1999, reflecting a modest interest that has since leveled off. As an Italian import, Isaia offers an alternative to the more common English Isaiah, appealing to families seeking a distinctive yet traditional name with deep religious roots.
Isaia is the Italian form of Isaiah, derived from the Hebrew name Yeshayahu, meaning 'God is my salvation.' It has been used in Italy since the Middle Ages, primarily among Christian families referencing the biblical prophet. The name remains moderately popular in Italy and among Italian diaspora communities.
“Isaia” around the world
Where Isaia lands in the latest official birth statistics abroad, matched to the U.S. spelling.
France
55
babies in 2024
Ireland
3
babies in 2025
Sources: INSEE (France) · CSO Ireland (Ireland).
Nicknames & variants
Nicknames: Isa, Sia
Sibling names for Isaia
Names that share Isaia's style, for a brother or sister.
