How Many People Are Named Mio?
An estimated 433 people in the United States have the first name Mio. It is used for both genders, with 76.2% female. The average bearer is 13 years old, and Mio peaked in popularity in 2020 with 27 births that year.
Below you will find a full statistical profile of Mio 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 Mio paired with any surname.
Estimated Living Americans
433
About 1 in 791,580 people in the U.S.
Rarity
Very Rare
Predicted Gender
Female
76.2% confidence
Average Age
13
years old
Peak Year
2020
27 births
Total Registered
437
since 1880
Gender Distribution for Mio
Mio is a genuinely unisex name, used for both males (23.8%) and females (76.2%). Out of 437 total births registered, 104 were male and 333 were female.
Mio as a male name
Ranked #10,422 in 2023
7 male births in 2023
Peak: 2022 (14 births)
Mio as a female name
Ranked #6,823 in 2024
17 female births in 2024
Peak: 2020 (21 births)
Mio in the 2020 Census
The 2020 Census recorded 739 people with the first name Mio, which placed it at #15,541 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, Mio was recorded as predominantly female. Out of 739 people with this name in that snapshot, 21.0% were male and 79.0% were female. That is very close to the long-run birth pattern in SSA records, where the name is female 76.2% of the time.
Census Count
739
people with this name
Census Rank
#15,541
among Census first names
Frequency Rate
0.24
per 100,000 people
Recorded Race and Hispanic Origin in the 2020 Census
In the 2020 Census, the first name Mio was most commonly recorded among people who identified as Asian and Pacific Islander (62.55%). The next largest recorded groups were Hispanic (14.23%) and Two or More Races (11.14%).
These percentages describe the people who had the first name Mio 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 Mio.
| Group | Share | Count |
|---|---|---|
| Asian and Pacific Islander | 62.55% | 466 |
| Hispanic | 14.23% | 106 |
| Two or More Races | 11.14% | 83 |
| White | 8.99% | 67 |
| Black | 2.42% | 18 |
| American Indian and Alaska Native | 0.67% | 5 |
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.
Mio: Popularity Over Time
SSA records for Mio span from the 1980s to the 2020s, covering 5 decades of naming data. The most popular decade for this name was the 2010s, when 198 babies were registered. While Mio is less common than at its peak in the 2010s, it remains a well-established name with steady registrations.
Mio by Decade
How has Mio 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.
Mio by State
Mio + Last Name Combinations
How many people share a full name with Mio as the first name? Click a combination below to see the estimate, or search any pairing.
Names Similar to Mio
Other first names starting with M with a similar number of bearers.
Mio: Questions and Answers
How many people in the U.S. are named Mio?
We estimate approximately 433 people named Mio 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 791,580 Americans share this first name.
Is Mio a common name?
Mio is classified as "Very Rare" and is more popular than 83.1% of all first names in the SSA database. A total of 437 births have been registered with this name since 1880.
When was Mio most popular?
Mio reached peak popularity in 2020, when 27 babies were given this name. The average age of a living person named Mio is approximately 13 years old, reflecting when the name was most commonly given.
How common was Mio in the 2020 Census?
The 2020 Census recorded 739 people with the first name Mio. That placed it at #15,541 in the published Census first-name tables, or 0.24 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 Mio 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 Mio?
In the 2020 Census snapshot, Mio was recorded as predominantly female. The published split was 21.0% male and 79.0% female.
What does the Census say about the background of people named Mio?
In the 2020 Census, the first name Mio was most commonly recorded among people who identified as Asian and Pacific Islander (62.55%). The next largest recorded groups were Hispanic (14.23%) and Two or More Races (11.14%). 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 Mio a female name?
Mio is predominantly female. 76.2% of people with this name are female. See the gender breakdown above for full details.
Why can Mio 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. Mio peaked in 2020, and the average living bearer is about 13 years old, so a name can still have millions of living bearers even after it stops feeling current for newborns.
How many Mio Smiths are there?
To find how many people share a specific full name, we combine first name and surname frequencies. Try: Mio Smith, Mio Johnson, Mio 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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