Izaiah
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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.
How popular is Izaiah around the world?
In the United States, 3,069 babies were named Izaiah between 2020 and 2025. In South Australia, 7 boys were registered as Izaiah in 2017.
Izaiah is on the official records of the United States, South Australia, Canada and England and Wales.
United States
1 in 7,100
In the United States, 3,069 babies were named Izaiah between 2020 and 2025.
Shape drawn from US Social Security baby-name records. Izaiah peaked in the 2010s.
Births with a Social Security record. Source: U.S. Social Security Administration
South Australia
1 in 2,6002017
In South Australia, 7 boys were registered as Izaiah in 2017.
The count never rose above 7 in a year, too few to chart.
Births registered in South Australia (not all of Australia) by first name and year of registration, 1944–2017, from the state’s Births, Deaths and Marriages registry, which publishes every name down to a single birth in capitals; a spelling its export repeats inside a year is counted once, and from 2018 only a top 100 is published, so the series ends at 2017. Source: Consumer and Business Services (South Australia), popular baby names
Canada
1 in 18,000
In Canada, 20 boys named Izaiah were born in 2024, ranked 1,181st among boys that year.
share of that year’s name registrations
First given names from provincial and territorial vital statistics across Canada; any name-sex-year under 5 is excluded at source, and small Quebec counts carry a randomized adjustment made at source. Shares divide by Statistics Canada’s count of live births for the year; the 2024 count is preliminary. Source: Statistics Canada, first names at birth (table 17-10-0147-01)
England and Wales
1 in 24,000
In England and Wales, 24 boys named Izaiah were born in 2025, ranked 1,197th among boys that year.
share of that year’s name registrations
Birth registrations in England and Wales (not the whole UK); exact spellings are counted separately, and any spelling under 3 in a year is withheld at source. Source: Office for National Statistics, baby names in England and Wales
Ireland
last on record 2024
Izaiah is not on the 2025 record for Ireland, where names under 3 in a year are withheld at source.
The count never rose above 3 in a year, too few to chart.
Exact registered spellings from Irish vital statistics; any name under 3 in a year is withheld at source, and accented spellings (fadas) are recorded reliably only from 2018. Source: Central Statistics Office (Ireland), Irish babies' names
New Zealand
last on record 2022
Izaiah is not on the 2025 record for New Zealand, where names under 10 in a year are excluded at source.
share of that year’s name registrations
First given names from New Zealand birth registrations, grouped by registration year; any name under 10 in a year is excluded at source. Shares divide by Stats NZ’s count of births registered to mothers living in New Zealand, under 1% below the registry’s own count. Source: Department of Internal Affairs (New Zealand), baby name popularity over time
Not on the record in Spain, Mexico City, Argentina, Puerto Rico, Scotland and Poland: those registries withhold small counts, so rare uses may sit below their floors.
Not on the Chile record: nametree keeps spellings that reached 5 registrations in some year, so rarer uses are not shown. Not on the Montevideo record for 1940 to 2011: that registry withholds nothing, so this spelling was not given there in those years. Not on the France record: nametree keeps spellings that reached 20 births in some year, so rarer uses are not shown. Not on the Austria record for 1984 to 2025: Statistik Austria publishes every first name down to a single birth, so this name was not given there in those years (before 2010 the record covers babies with Austrian citizenship only). Not on Norway’s list: Statistics Norway lists only first names carried by 200 or more living people, so rarer names are not shown.
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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