How Many People Are Named Masami?
An estimated 21 people in the United States have the first name Masami. It is predominantly male (96.6%). The average bearer is 63 years old, and Masami peaked in popularity in 1917 with 35 births that year.
Below you will find a full statistical profile of Masami as a first name in the United States, including gender data, a year-by-year popularity timeline going back to 1880, a decade breakdown, state-by-state birth registrations, and, when available, a 2020 Census snapshot showing who had the name at that point in time. You can also check how many people share the full name Masami paired with any surname.
Key Insights
- Masami is exceptionally rare. Fewer than 100 people with this name are estimated to be alive in the U.S. today.
Estimated Living Americans
21
About 1 in 16,321,635 people in the U.S.
Rarity
Very Rare
Predicted Gender
Male
96.6% confidence
Average Age
63
years old
Peak Year
1917
35 births
Total Registered
298
since 1880
Gender Distribution for Masami
Masami is predominantly male (96.6%), though 10 female births have been registered. It functions as a unisex name for a small percentage of bearers.
Masami as a male name
Ranked #3,404 in 1936
6 male births in 1936
Peak: 1917 (35 births)
Masami as a female name
Ranked #16,776 in 2024
5 female births in 2024
Peak: 1978 (5 births)
Masami in the 2020 Census
The 2020 Census recorded 771 people with the first name Masami, which placed it at #15,054 in the published first-name tables. This is a snapshot of people who already had the name in 2020. The estimated living count elsewhere on this page is different: it is a current estimate built from SSA birth records and age-based survival rates, so the two figures are not expected to match exactly.
Read this section as a snapshot of people who already had the name in 2020. The SSA charts elsewhere on this page are still the better way to see how the name rose, fell, or shifted across generations.
Gender in the 2020 Census
In the 2020 Census, Masami was recorded as predominantly female. Out of 771 people with this name in that snapshot, 26.6% were male and 73.4% were female. That is less heavily female than the long-run SSA birth pattern on this page, which sits at 96.6% male.
Census Count
771
people with this name
Census Rank
#15,054
among Census first names
Frequency Rate
0.26
per 100,000 people
Recorded Race and Hispanic Origin in the 2020 Census
In the 2020 Census, the first name Masami was most commonly recorded among people who identified as Asian and Pacific Islander (91.40%). The next largest recorded groups were Two or More Races (5.74%) and White (1.04%).
These percentages describe the people who had the first name Masami in the 2020 Census. They do not tell you the deeper meaning or origin of the name itself.
2020 Census demographic breakdown
Each row shows a recorded Census category for people with the first name Masami.
| Group | Share | Count |
|---|---|---|
| Asian and Pacific Islander | 91.40% | 701 |
| Two or More Races | 5.74% | 44 |
| White | 1.04% | 8 |
| Hispanic | 0.91% | 7 |
| Black | 0.65% | 5 |
| American Indian and Alaska Native | 0.26% | 2 |
The Census published separate sex and race/origin tables for first names, so their total counts can differ slightly for the same name. That is why the race section focuses on the demographic mix rather than repeating a second headline count.
Masami: Popularity Over Time
SSA records for Masami span from the 1910s to the 2020s, covering 5 decades of naming data. The most popular decade for this name was the 1920s, when 147 babies were registered. Masami has declined significantly from its peak in the 1920s. Recent registrations are a fraction of what they were at the name's height.
Masami by Decade
How has Masami 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.
Masami by State
Masami + Last Name Combinations
How many people share a full name with Masami as the first name? Click a combination below to see the estimate, or search any pairing.
Names Similar to Masami
Other first names starting with M with a similar number of bearers.
Masami: Questions and Answers
How many people in the U.S. are named Masami?
We estimate approximately 21 people named Masami 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 16,321,635 Americans share this first name.
Is Masami a common name?
Masami is classified as "Very Rare" and is more popular than 40.8% of all first names in the SSA database. A total of 298 births have been registered with this name since 1880.
When was Masami most popular?
Masami reached peak popularity in 1917, when 35 babies were given this name. The average age of a living person named Masami is approximately 63 years old, reflecting when the name was most commonly given.
How common was Masami in the 2020 Census?
The 2020 Census recorded 771 people with the first name Masami. That placed it at #15,054 in the published Census first-name tables, or 0.26 people per 100,000.
Why is the Census count different from the living estimate?
Because they measure different things. The Census number is a count of people with the name in 2020. The living estimate is a current model based on SSA birth records and survival rates, so it aims to estimate how many people with the name are alive now.
What does the SSA popularity chart show?
The popularity chart tracks birth registrations, not people currently alive. It shows how often Masami was given to babies from 1880 through 2024, which is why it is the best tool on the page for seeing long-run naming trends.
What does the Census say about the gender split for Masami?
In the 2020 Census snapshot, Masami was recorded as predominantly female. The published split was 26.6% male and 73.4% female.
What does the Census say about the background of people named Masami?
In the 2020 Census, the first name Masami was most commonly recorded among people who identified as Asian and Pacific Islander (91.40%). The next largest recorded groups were Two or More Races (5.74%) and White (1.04%). These percentages describe the people who had the name in the 2020 Census, not the deeper meaning or origin of the name itself.
Why can the Census sex total and race total differ slightly?
The Census published separate first-name tables for sex and for race and Hispanic origin. Those totals can differ slightly for the same name, so the page uses them as two related snapshots rather than treating them as perfectly interchangeable counts.
Does every first name have Census demographic data?
No. The public Census first-name tables only include names that met the Bureau's publication rules. That means some names on this site will have SSA history but no published Census demographic snapshot.
Is Masami a male name?
Masami is predominantly male. 96.6% of people with this name are male. See the gender breakdown above for full details.
Why can Masami have a lot of living bearers even if it is not trendy now?
Because a name can build up a large population over many decades. Masami peaked in 1917, and the average living bearer is about 63 years old, so a name can still have millions of living bearers even after it stops feeling current for newborns.
How many Masami Smiths are there?
To find how many people share a specific full name, we combine first name and surname frequencies. Try: Masami Smith, Masami Johnson, Masami 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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