How Many People Are Named Hiroko?
An estimated 93 people in the United States have the first name Hiroko. It is almost exclusively a female name. The average bearer is 55 years old, and Hiroko peaked in popularity in 1919 with 19 births that year.
Below you will find a full statistical profile of Hiroko 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 Hiroko paired with any surname.
Key Insights
- Hiroko is exceptionally rare. Fewer than 100 people with this name are estimated to be alive in the U.S. today.
Estimated Living Americans
93
About 1 in 3,685,531 people in the U.S.
Rarity
Very Rare
Predicted Gender
Female
100.0% confidence
Average Age
55
years old
Peak Year
1919
19 births
Total Registered
328
since 1880
Gender Distribution for Hiroko
Hiroko is almost exclusively a female name. Out of 328 total births registered, 100.0% were female.
Hiroko as a female name
Ranked #14,057 in 1992
5 female births in 1992
Peak: 1919 (19 births)
Hiroko: Popularity Over Time
SSA records for Hiroko span from the 1910s to the 1990s, covering 7 decades of naming data. The most popular decade for this name was the 1920s, when 109 babies were registered. Hiroko has declined significantly from its peak in the 1920s. Recent registrations are a fraction of what they were at the name's height.
Hiroko by Decade
How has Hiroko 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.
Hiroko by State
Hiroko + Last Name Combinations
How many people share a full name with Hiroko as the first name? Click a combination below to see the estimate, or search any pairing.
Names Similar to Hiroko
Other first names starting with H with a similar number of bearers.
Hiroko: Questions and Answers
How many people in the U.S. are named Hiroko?
We estimate approximately 93 people named Hiroko 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 3,685,531 Americans share this first name.
Is Hiroko a common name?
Hiroko is classified as "Very Rare" and is more popular than 63.5% of all first names in the SSA database. A total of 328 births have been registered with this name since 1880.
When was Hiroko most popular?
Hiroko reached peak popularity in 1919, when 19 babies were given this name. The average age of a living person named Hiroko is approximately 55 years old, reflecting when the name was most commonly given.
Is Hiroko a female name?
Hiroko is predominantly female. 100.0% of people with this name are female. See the gender breakdown above for full details.
How many Hiroko Smiths are there?
To find how many people share a specific full name, we combine first name and surname frequencies. Try: Hiroko Smith, Hiroko Johnson, Hiroko 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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