How Many People Are Named Iason?
An estimated 39 people in the United States have the first name Iason. It is almost exclusively a male name. The average bearer is 11 years old, and Iason peaked in popularity in 2013 with 9 births that year.
Below you will find a full statistical profile of Iason 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 Iason paired with any surname.
Key Insights
- Iason is exceptionally rare. Fewer than 100 people with this name are estimated to be alive in the U.S. today.
Estimated Living Americans
39
About 1 in 8,788,573 people in the U.S.
Rarity
Very Rare
Predicted Gender
Male
100.0% confidence
Average Age
11
years old
Peak Year
2013
9 births
Total Registered
39
since 1880
Gender Distribution for Iason
Iason is almost exclusively a male name. Out of 39 total births registered, 100.0% were male.
Iason as a male name
Ranked #9,943 in 2020
7 male births in 2020
Peak: 2013 (9 births)
Iason: Popularity Over Time
SSA records for Iason span from the 2010s to the 2020s, covering 2 decades of naming data. The most popular decade for this name was the 2010s, when 32 babies were registered. Iason has declined significantly from its peak in the 2010s. Recent registrations are a fraction of what they were at the name's height.
Iason by Decade
How has Iason 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.
Iason + Last Name Combinations
How many people share a full name with Iason as the first name? Click a combination below to see the estimate, or search any pairing.
Names Similar to Iason
Other first names starting with I with a similar number of bearers.
Iason: Questions and Answers
How many people in the U.S. are named Iason?
We estimate approximately 39 people named Iason 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 8,788,573 Americans share this first name.
Is Iason a common name?
Iason is classified as "Very Rare" and is more popular than 50.6% of all first names in the SSA database. A total of 39 births have been registered with this name since 1880.
When was Iason most popular?
Iason reached peak popularity in 2013, when 9 babies were given this name. The average age of a living person named Iason is approximately 11 years old, reflecting when the name was most commonly given.
Is Iason a male name?
Iason is predominantly male. 100.0% of people with this name are male. See the gender breakdown above for full details.
How many Iason Smiths are there?
To find how many people share a specific full name, we combine first name and surname frequencies. Try: Iason Smith, Iason Johnson, Iason 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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