How Many People Are Named Chiyo?
An estimated 17 people in the United States have the first name Chiyo. It is almost exclusively a female name. The average bearer is 23 years old, and Chiyo peaked in popularity in 1917 with 12 births that year.
Below you will find a full statistical profile of Chiyo 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 Chiyo paired with any surname.
Key Insights
- Chiyo is exceptionally rare. Fewer than 100 people with this name are estimated to be alive in the U.S. today.
Estimated Living Americans
17
About 1 in 20,162,020 people in the U.S.
Rarity
Very Rare
Predicted Gender
Female
100.0% confidence
Average Age
23
years old
Peak Year
1917
12 births
Total Registered
135
since 1880
Gender Distribution for Chiyo
Chiyo is almost exclusively a female name. Out of 135 total births registered, 100.0% were female.
Chiyo as a female name
Ranked #16,044 in 2019
5 female births in 2019
Peak: 1917 (12 births)
Chiyo: Popularity Over Time
SSA records for Chiyo span from the 1910s to the 2010s, covering 4 decades of naming data. The most popular decade for this name was the 1920s, when 65 babies were registered. Chiyo has declined significantly from its peak in the 1920s. Recent registrations are a fraction of what they were at the name's height.
Chiyo by Decade
How has Chiyo 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.
Chiyo by State
Birth registrations for Chiyo span all 3 states and territories in the SSA database. The highest counts are in Hawaii, California, Washington. The lowest are in Washington, California, Hawaii. On average, about 9 Chiyos were registered per state.
Chiyo + Last Name Combinations
How many people share a full name with Chiyo as the first name? Click a combination below to see the estimate, or search any pairing.
Names Similar to Chiyo
Other first names starting with C with a similar number of bearers.
Chiyo: Questions and Answers
How many people in the U.S. are named Chiyo?
We estimate approximately 17 people named Chiyo 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 20,162,020 Americans share this first name.
Is Chiyo a common name?
Chiyo is classified as "Very Rare" and is more popular than 37.6% of all first names in the SSA database. A total of 135 births have been registered with this name since 1880.
When was Chiyo most popular?
Chiyo reached peak popularity in 1917, when 12 babies were given this name. The average age of a living person named Chiyo is approximately 23 years old, reflecting when the name was most commonly given.
Is Chiyo a female name?
Chiyo is predominantly female. 100.0% of people with this name are female. See the gender breakdown above for full details.
How many Chiyo Smiths are there?
To find how many people share a specific full name, we combine first name and surname frequencies. Try: Chiyo Smith, Chiyo Johnson, Chiyo 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.
Search for a full name combination
How Many of Me