How Many People Are Named Josiah?
An estimated 140,952 people in the United States have the first name Josiah. While not in the top 50, it remains a well-known name ranking #378 overall. It is almost exclusively a male name. The average bearer is 15 years old, and Josiah peaked in popularity in 2017 with 7,086 births that year.
Below you will find a full statistical profile of Josiah 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 Josiah paired with any surname.
Key Insights
- While Josiah is overwhelmingly male, 449 female births have been registered with this name since 1880.
- Josiah is a modern name. With an average bearer age of just 15, it has gained most of its popularity in recent years.
Estimated Living Americans
140,952
About 1 in 2,432 people in the U.S.
Rarity
Common
Predicted Gender
Male
99.7% confidence
Average Age
15
years old
Peak Year
2017
7,086 births
Total Registered
143,787
since 1880
Gender Distribution for Josiah
Josiah is almost exclusively a male name. Out of 143,787 total births registered, 99.7% were male.
Josiah as a male name
Ranked #53 in 2024
5,457 male births in 2024
Peak: 2017 (7,073 births)
Josiah as a female name
Ranked #10,614 in 2024
9 female births in 2024
Peak: 2006 (21 births)
Josiah: Popularity Over Time
SSA records for Josiah span from the 1880s to the 2020s, covering 15 decades of naming data. The most popular decade for this name was the 2010s, when 63,245 babies were registered. While Josiah is less common than at its peak in the 2010s, it remains a well-established name with steady registrations.
Josiah by Decade
How has Josiah 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.
Josiah by State
Birth registrations for Josiah span all 51 states and territories in the SSA database. The highest counts are in California, Texas, Florida. The lowest are in Vermont, Wyoming, New Hampshire. On average, about 2,755 Josiahs were registered per state.
Josiah + Last Name Combinations
How many people share a full name with Josiah as the first name? Click a combination below to see the estimate, or search any pairing.
Names Similar to Josiah
Other first names starting with J with a similar number of bearers.
Josiah: Questions and Answers
How many people in the U.S. are named Josiah?
We estimate approximately 140,952 people named Josiah 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 2,432 Americans share this first name.
Is Josiah a common name?
Josiah is classified as "Common" and is more popular than 99.6% of all first names in the SSA database. A total of 143,787 births have been registered with this name since 1880.
When was Josiah most popular?
Josiah reached peak popularity in 2017, when 7,086 babies were given this name. The average age of a living person named Josiah is approximately 15 years old, reflecting when the name was most commonly given.
Is Josiah a male name?
Josiah is predominantly male. 99.7% of people with this name are male. See the gender breakdown above for full details.
How many Josiah Smiths are there?
To find how many people share a specific full name, we combine first name and surname frequencies. Try: Josiah Smith, Josiah Johnson, Josiah 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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