How Many People Are Named Josaiah?
An estimated 424 people in the United States have the first name Josaiah. It is almost exclusively a male name. The average bearer is 15 years old, and Josaiah peaked in popularity in 2008 with 25 births that year.
Below you will find a full statistical profile of Josaiah 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 Josaiah paired with any surname.
Estimated Living Americans
424
About 1 in 808,383 people in the U.S.
Rarity
Very Rare
Predicted Gender
Male
100.0% confidence
Average Age
15
years old
Peak Year
2008
25 births
Total Registered
428
since 1880
Gender Distribution for Josaiah
Josaiah is almost exclusively a male name. Out of 428 total births registered, 100.0% were male.
Josaiah as a male name
Ranked #10,324 in 2024
7 male births in 2024
Peak: 2008 (25 births)
Josaiah: Popularity Over Time
SSA records for Josaiah span from the 1990s to the 2020s, covering 4 decades of naming data. The most popular decade for this name was the 2010s, when 169 babies were registered. While Josaiah is less common than at its peak in the 2010s, it remains a well-established name with steady registrations.
Josaiah by Decade
How has Josaiah 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.
Josaiah by State
Josaiah + Last Name Combinations
How many people share a full name with Josaiah as the first name? Click a combination below to see the estimate, or search any pairing.
Names Similar to Josaiah
Other first names starting with J with a similar number of bearers.
Josaiah: Questions and Answers
How many people in the U.S. are named Josaiah?
We estimate approximately 424 people named Josaiah 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 808,383 Americans share this first name.
Is Josaiah a common name?
Josaiah is classified as "Very Rare" and is more popular than 82.9% of all first names in the SSA database. A total of 428 births have been registered with this name since 1880.
When was Josaiah most popular?
Josaiah reached peak popularity in 2008, when 25 babies were given this name. The average age of a living person named Josaiah is approximately 15 years old, reflecting when the name was most commonly given.
Is Josaiah a male name?
Josaiah is predominantly male. 100.0% of people with this name are male. See the gender breakdown above for full details.
How many Josaiah Smiths are there?
To find how many people share a specific full name, we combine first name and surname frequencies. Try: Josaiah Smith, Josaiah Johnson, Josaiah 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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