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 ancestry information.
Expected bearers
1
1 in 342,754,338
Named Marcello
5.9K
Alive today
Named Mastroianni
2.3K
Alive today
US population
343M
Denominator
Estimated living: 5.9K
Rarity: Rare
Gender: Male
Peak year: 2024
Average age: 25
Estimated bearers: 2.3K
Rarity: Rare
Census rank: #14,957
Per 100K: 0.67
Top ancestry: White (95.8%)
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
Ethnicity
Ancestry of the Mastroianni surname
Self-reported race and ethnicity breakdown for people with the surname Mastroianni, from the 2010 US Census Bureau. The largest group is White at 95.8%.
- White95.8%
- Hispanic or Latino2.4%
- Two or more races1.0%
- Asian and Pacific Islander0.8%
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).
The surname Mastroianni appears at a rate of 0.67 per 100,000 residents in the 2010 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.
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 (0.67 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 2010 US Census Bureau decennial surname tables. Living-bearer estimates use CDC actuarial life tables to adjust for mortality. Read the full methodology.