Tom Dicillo
There are approximately 1 people named Tom Dicillo 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 Tom with Census Bureau frequency data for the surname Dicillo. 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 Tom
73K
Alive today
Named Dicillo
206
Alive today
US population
343M
Denominator
Estimated living: 73K
Rarity: Uncommon
Gender: Male
Peak year: 1959
Average age: 67
Estimated bearers: 206
Rarity: Very Rare
Census rank: #99,378
Per 100K: 0.06
Top ancestry: White (98.9%)
First name trend
Tom: popularity over time
Year-by-year SSA birth registrations for the first name Tom. The peak year was 1959 with 5,080 births. The average person named Tom today is 67 years old.
Babies born per year
Ethnicity
Ancestry of the Dicillo surname
Self-reported race and ethnicity breakdown for people with the surname Dicillo, from the 2010 US Census Bureau. The largest group is White at 98.9%.
- White98.9%
Methodology
How we calculated this
The first name Tom has a living-bearer frequency of 0.0214% of the US population, based on 73,314 estimated living Americans carrying this first name (from SSA birth records going back to 1880, adjusted for mortality using CDC life tables).
The surname Dicillo appears at a rate of 0.06 per 100,000 residents in the 2010 Census Bureau surname file, which translates to a frequency of 0.0001%.
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 Tom Dicillo. This assumes statistical independence between first and last names, which is a simplification but produces reasonable estimates for most combinations.
Related
Other people named Tom
FAQ
Tom Dicillo: questions and answers
How many people are named Tom Dicillo?
We estimate approximately 1 people in the United States share the full name Tom Dicillo. That works out to about 1 in 342,754,338 Americans. This is calculated by combining the first-name frequency (0.0214%) with the surname frequency (0.06 per 100K) against the current US population.
How rare is the name Tom Dicillo?
We classify Tom Dicillo as "Very Rare". About 1 in 342,754,338 Americans share this exact first and last name combination.
Is Tom a male or female name?
Tom is predominantly male. Out of 140,303 total SSA registrations, 99.6% were male and 0.4% were female. See the full Tom 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.