How Many People Are Named Masuo?
An estimated 1 people in the United States have the first name Masuo. It is almost exclusively a male name. The average bearer is 81 years old, and Masuo peaked in popularity in 1920 with 11 births that year.
Below you will find a full statistical profile of Masuo 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 Masuo paired with any surname.
Key Insights
- With an average bearer age of 81, Masuo is a vintage name most associated with earlier generations. Most living bearers were born before 1955.
- Masuo is exceptionally rare. Fewer than 100 people with this name are estimated to be alive in the U.S. today.
Estimated Living Americans
1
About 1 in 342,754,338 people in the U.S.
Rarity
Very Rare
Predicted Gender
Male
100.0% confidence
Average Age
81
years old
Peak Year
1920
11 births
Total Registered
35
since 1880
Gender Distribution for Masuo
Masuo is almost exclusively a male name. Out of 35 total births registered, 100.0% were male.
Masuo as a male name
Ranked #4,584 in 1927
5 male births in 1927
Peak: 1920 (11 births)
Masuo: Popularity Over Time
SSA records for Masuo span from the 1910s to the 1920s, covering 2 decades of naming data. The most popular decade for this name was the 1920s, when 29 babies were registered. Masuo remains highly popular today, with recent registration numbers near its historical peak.
Masuo by Decade
How has Masuo 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.
Masuo by State
Masuo + Last Name Combinations
How many people share a full name with Masuo as the first name? Click a combination below to see the estimate, or search any pairing.
Names Similar to Masuo
Other first names starting with M with a similar number of bearers.
Masuo: Questions and Answers
How many people in the U.S. are named Masuo?
We estimate approximately 1 people named Masuo 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 342,754,338 Americans share this first name.
Is Masuo a common name?
Masuo is classified as "Very Rare" and is more popular than 3.8% of all first names in the SSA database. A total of 35 births have been registered with this name since 1880.
When was Masuo most popular?
Masuo reached peak popularity in 1920, when 11 babies were given this name. The average age of a living person named Masuo is approximately 81 years old, reflecting when the name was most commonly given.
Is Masuo a male name?
Masuo is predominantly male. 100.0% of people with this name are male. See the gender breakdown above for full details.
How many Masuo Smiths are there?
To find how many people share a specific full name, we combine first name and surname frequencies. Try: Masuo Smith, Masuo Johnson, Masuo 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 0 life tables broken down by sex. The U.S. population figure (342,754,338) is from the Census Bureau estimate. Full methodology.
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