How Many People Are Named Mariko?
An estimated 1,153 people in the United States have the first name Mariko. It is predominantly female (99.5%). The average bearer is 36 years old, and Mariko peaked in popularity in 1984 with 57 births that year.
Below you will find a full statistical profile of Mariko 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 Mariko paired with any surname.
Estimated Living Americans
1,153
About 1 in 297,272 people in the U.S.
Rarity
Rare
Predicted Gender
Female
99.5% confidence
Average Age
36
years old
Peak Year
1984
57 births
Total Registered
1,315
since 1880
Gender Distribution for Mariko
Mariko is almost exclusively a female name. Out of 1,315 total births registered, 99.5% were female.
Mariko as a male name
Ranked #6,429 in 1986
6 male births in 1986
Peak: 1986 (6 births)
Mariko as a female name
Ranked #11,729 in 2024
8 female births in 2024
Peak: 1984 (57 births)
Mariko: Popularity Over Time
SSA records for Mariko span from the 1910s to the 2020s, covering 11 decades of naming data. The most popular decade for this name was the 1980s, when 480 babies were registered. Mariko has declined significantly from its peak in the 1980s. Recent registrations are a fraction of what they were at the name's height.
Mariko by Decade
How has Mariko 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.
Mariko by State
Birth registrations for Mariko span all 4 states and territories in the SSA database. The highest counts are in California, New York, Washington. The lowest are in Hawaii, Washington, New York. On average, about 110 Marikos were registered per state.
Mariko + Last Name Combinations
How many people share a full name with Mariko as the first name? Click a combination below to see the estimate, or search any pairing.
Names Similar to Mariko
Other first names starting with M with a similar number of bearers.
Mariko: Questions and Answers
How many people in the U.S. are named Mariko?
We estimate approximately 1,153 people named Mariko 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 297,272 Americans share this first name.
Is Mariko a common name?
Mariko is classified as "Rare" and is more popular than 91% of all first names in the SSA database. A total of 1,315 births have been registered with this name since 1880.
When was Mariko most popular?
Mariko reached peak popularity in 1984, when 57 babies were given this name. The average age of a living person named Mariko is approximately 36 years old, reflecting when the name was most commonly given.
Is Mariko a female name?
Mariko is predominantly female. 99.5% of people with this name are female. See the gender breakdown above for full details.
How many Mariko Smiths are there?
To find how many people share a specific full name, we combine first name and surname frequencies. Try: Mariko Smith, Mariko Johnson, Mariko 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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