Izaiah
Meaning
phonetic respelling of Isaiah, God is salvation
The story
Izaiah is Isaiah with the volume turned up, a phonetic respelling that Behind the Name files plainly as a variant. The name underneath is one of the heavyweights: Hebrew Yeshaʿyahu, Yahweh is salvation, carried by the prophet whom the Book of Isaiah is traditionally credited to, a man Behind the Name places, with honest hedges, as probably living in the eighth century BC. English speakers only began using Isaiah as a given name after the Protestant Reformation. The Izaiah spelling is younger than its bearer list suggests: first counted in the 1980s with 27 boys, then 715 in the 1990s, 5,047 in the 2000s, and 6,041 across the 2010s. This decade stands at 3,069 so far, more than half the full previous total. Behind the Name ranks the spelling 635th in the United States for 2025 and 800th in England and Wales for 2024. Same prophet, same salvation, one letter louder.
Popularity, 1890–2024
Shape drawn from US Social Security baby-name records. Izaiah peaked in the 2010s.
When you meet Izaiah
Most people given the name Izaiah in the United States are children or teenagers today. The name belongs to this generation.
Estimated from US Social Security birth registrations and typical lifespans; a rough guide, not a rule.
The Izaiah deep dive
Whether you’re naming a baby or exploring your own name’s history, this is a personal letter, not a list: where Izaiah truly comes from, how it traveled, and what a century of records reveals. If you have grown a tree on nametree, it also considers how Izaiah fits with your family’s names and surname.
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