Marcello Mastroianni
There are approximately 1 people named Marcello Mastroianni living in the United States today. That makes this name combination very rare, occurring at a rate of about 1 in 342,754,338 Americans.
This estimate combines SSA birth records for the first name Marcello with Census Bureau frequency data for the surname Mastroianni. Below you will find a breakdown of both names, including popularity trends, gender data, and Census demographics where available.
Expected bearers
1
1 in 342,754,338
Named Marcello
5.9K
Alive today
Named Mastroianni
2.2K
Alive today
US population
343M
Denominator
Estimated living: 5.9K
Rarity: Rare
Gender: Male
Peak year: 2024
Average age: 25
Top Census group: Hispanic or Latino (42.6%)
Estimated bearers: 2.2K
Rarity: Rare
Census rank: #14,661
Per 100K: 0.65
Top ancestry: White (91.8%)
First name trend
Marcello: popularity over time
Year-by-year SSA birth registrations for the first name Marcello. The peak year was 2024 with 224 births. The average person named Marcello today is 25 years old.
Babies born per year
Demographics
Ancestry and ethnicity for Marcello
Self-reported race and ethnicity breakdown for people with the first name Marcello, from the 2020 US Census Bureau first-name tables. The largest published group is Hispanic or Latino at 42.6%.
The bar chart below shows how people with the first name Marcello described their own race and ethnicity on the 2020 Census form. These are self-reported numbers, and they describe the population who happened to carry the name Marcello at the time of the Census. A first name does not determine a person's race or ethnicity.
- Hispanic or Latino42.6% · 2,507
- White42.2% · 2,480
- Black or African American9.4% · 552
- Two or more races3.6% · 212
- Asian and Pacific Islander1.6% · 96
- American Indian and Alaska Native0.6% · 35
Ethnicity
Ancestry of the Mastroianni surname
Self-reported race and ethnicity breakdown for people with the surname Mastroianni, from the 2020 US Census Bureau. The largest group is White at 91.8%.
The bar chart below shows how people with the surname Mastroianni described their own race and ethnicity on the 2020 Census form. These are self-reported numbers, and they describe the population who happened to carry the surname Mastroianni at the time of the Census. A surname does not determine a person's race or ethnicity.
- White91.8% · 1,791
- Hispanic or Latino3.9% · 77
- Two or more races3.0% · 58
- Asian and Pacific Islander1.0% · 19
- Black or African American0.3% · 5
Methodology
How we calculated this
The first name Marcello has a living-bearer frequency of 0.0017% of the US population, based on 5,890 estimated living Americans carrying this first name (from SSA birth records going back to 1880, adjusted for mortality using CDC life tables).
Even though the Census Bureau now publishes first-name tables, we do not use that file as the main first-name input for this estimate. The latest first-name Census snapshot is from 2020, which makes it 6 years old today. Because Census first-name data is only released once every 10 years, SSA birth records plus CDC survival rates give a better current estimate of how many people are likely alive with the name Marcello right now.
The surname Mastroianni appears at a rate of 0.65 per 100,000 residents in the 2020 Census Bureau surname file, which translates to a frequency of 0.0007%.
Multiplying these two independent frequencies against the current US population of 342,754,338 gives an expected count of approximately 1 people with the full name Marcello Mastroianni. This assumes statistical independence between first and last names, which is a simplification but produces reasonable estimates for most combinations.
Related
Other people named Marcello
FAQ
Marcello Mastroianni: questions and answers
How many people are named Marcello Mastroianni?
We estimate approximately 1 people in the United States share the full name Marcello Mastroianni. That works out to about 1 in 342,754,338 Americans. This is calculated by combining the first-name frequency (0.0017%) with the surname frequency (0.65 per 100K) against the current US population.
How rare is the name Marcello Mastroianni?
We classify Marcello Mastroianni as "Very Rare". About 1 in 342,754,338 Americans share this exact first and last name combination.
Is Marcello a male or female name?
Marcello is predominantly male. Out of 6,352 total SSA registrations, 99.8% were male and 0.2% were female. See the full Marcello profile for detailed gender data.
Where does this data come from?
First-name data comes from the Social Security Administration's national baby name files (1880 to 2024). Surname data comes from the 2020 US Census Bureau decennial surname tables. Living-bearer estimates use CDC actuarial life tables to adjust for mortality. Read the full methodology.
How common is the name Marcello Mastroianni?
Find out how many people are called Marcello Mastroianni on our sister site HowManyOfMe.org — a quick modern estimate with the living-bearer count front and centre.