How Many People Are Named Izaia?
An estimated 89 people in the United States have the first name Izaia. It is almost exclusively a male name. The average bearer is 21 years old, and Izaia peaked in popularity in 2004 with 10 births that year.
Below you will find a full statistical profile of Izaia as a first name in the United States, including gender data, a year-by-year popularity timeline going back to 1880, a decade breakdown, and state-by-state birth registrations. You can also check how many people share the full name Izaia paired with any surname.
Key Insights
- Izaia is exceptionally rare. Fewer than 100 people with this name are estimated to be alive in the U.S. today.
Estimated Living Americans
89
About 1 in 3,851,172 people in the U.S.
Rarity
Very Rare
Predicted Gender
Male
100.0% confidence
Average Age
21
years old
Peak Year
2004
10 births
Total Registered
90
since 1880
Gender Distribution for Izaia
Izaia is almost exclusively a male name. Out of 90 total births registered, 100.0% were male.
Izaia as a male name
Ranked #12,805 in 2014
5 male births in 2014
Peak: 2004 (10 births)
Izaia: Popularity Over Time
SSA records for Izaia span from the 1990s to the 2010s, covering 3 decades of naming data. The most popular decade for this name was the 2000s, when 70 babies were registered. Izaia has declined significantly from its peak in the 2000s. Recent registrations are a fraction of what they were at the name's height.
Izaia by Decade
How has Izaia tracked across different eras? The table below groups all SSA birth registrations into 10-year periods, with separate male and female counts. The colored bar shows each decade's share relative to the peak.
Izaia + Last Name Combinations
How many people share a full name with Izaia as the first name? Click a combination below to see the estimate, or search any pairing.
Names Similar to Izaia
Other first names starting with I with a similar number of bearers.
Izaia: Questions and Answers
How many people in the U.S. are named Izaia?
We estimate approximately 89 people named Izaia are alive in the United States today. This is based on SSA birth records from 1880 to 2024, adjusted for mortality using CDC life tables. About 1 in 3,851,172 Americans share this first name.
Is Izaia a common name?
Izaia is classified as "Very Rare" and is more popular than 62.9% of all first names in the SSA database. A total of 90 births have been registered with this name since 1880.
When was Izaia most popular?
Izaia reached peak popularity in 2004, when 10 babies were given this name. The average age of a living person named Izaia is approximately 21 years old, reflecting when the name was most commonly given.
Is Izaia a male name?
Izaia is predominantly male. 100.0% of people with this name are male. See the gender breakdown above for full details.
How many Izaia Smiths are there?
To find how many people share a specific full name, we combine first name and surname frequencies. Try: Izaia Smith, Izaia Johnson, Izaia Williams. You can also search any combination on our homepage.
Where does this data come from?
Our estimates use Social Security Administration birth records (1880 to 2024), adjusted for survival using CDC 2023 life tables broken down by sex. The U.S. population figure (342,754,338) is from the Census Bureau's July 2025 estimate. Full methodology.
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