How Many People Are Named Mainou?
An estimated 5 people in the United States have the first name Mainou. It is almost exclusively a female name. The average bearer is 30 years old, and Mainou peaked in popularity in 1995 with 5 births that year.
Below you will find a full statistical profile of Mainou 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 Mainou paired with any surname.
Key Insights
- Mainou is exceptionally rare. Fewer than 100 people with this name are estimated to be alive in the U.S. today.
Estimated Living Americans
5
About 1 in 68,550,868 people in the U.S.
Rarity
Very Rare
Predicted Gender
Female
100.0% confidence
Average Age
30
years old
Peak Year
1995
5 births
Total Registered
5
since 1880
Gender Distribution for Mainou
Mainou is almost exclusively a female name. Out of 5 total births registered, 100.0% were female.
Mainou as a female name
Ranked #14,820 in 1995
5 female births in 1995
Peak: 1995 (5 births)
Mainou: Popularity Over Time
Mainou by Decade
How has Mainou 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.
| Decade | Total | Male | Female | |
|---|---|---|---|---|
| 1990s | 5 | 0 | 5 | |
Mainou + Last Name Combinations
How many people share a full name with Mainou as the first name? Click a combination below to see the estimate, or search any pairing.
Names Similar to Mainou
Other first names starting with M with a similar number of bearers.
Mainou: Questions and Answers
How many people in the U.S. are named Mainou?
We estimate approximately 5 people named Mainou 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 68,550,868 Americans share this first name.
Is Mainou a common name?
Mainou is classified as "Very Rare" and is more popular than 18.2% of all first names in the SSA database. A total of 5 births have been registered with this name since 1880.
When was Mainou most popular?
Mainou reached peak popularity in 1995, when 5 babies were given this name. The average age of a living person named Mainou is approximately 30 years old, reflecting when the name was most commonly given.
Is Mainou a female name?
Mainou is predominantly female. 100.0% of people with this name are female. See the gender breakdown above for full details.
How many Mainou Smiths are there?
To find how many people share a specific full name, we combine first name and surname frequencies. Try: Mainou Smith, Mainou Johnson, Mainou 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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