Billy Gilman
There are approximately 9 people named Billy Gilman living in the United States today. That makes this name combination very rare, occurring at a rate of about 1 in 38,083,815 Americans.
This estimate combines SSA birth records for the first name Billy with Census Bureau frequency data for the surname Gilman. Below you will find a breakdown of both names, including popularity trends, gender data, and ancestry information.
Expected bearers
9
1 in 38,083,815
Named Billy
214K
Alive today
Named Gilman
14K
Alive today
US population
343M
Denominator
Estimated living: 214K
Rarity: Common
Gender: Male
Peak year: 1934
Average age: 63
Estimated bearers: 14K
Rarity: Uncommon
Census rank: #3,003
Per 100K: 4.05
Top ancestry: White (93.0%)
First name trend
Billy: popularity over time
Year-by-year SSA birth registrations for the first name Billy. The peak year was 1934 with 9,659 births. The average person named Billy today is 63 years old.
Babies born per year
Ethnicity
Ancestry of the Gilman surname
Self-reported race and ethnicity breakdown for people with the surname Gilman, from the 2010 US Census Bureau. The largest group is White at 93.0%.
- White93.0%
- Hispanic or Latino2.0%
- Two or more races2.0%
- Asian and Pacific Islander1.1%
- Black or African American1.1%
- American Indian and Alaska Native0.9%
Methodology
How we calculated this
The first name Billy has a living-bearer frequency of 0.0623% of the US population, based on 213,640 estimated living Americans carrying this first name (from SSA birth records going back to 1880, adjusted for mortality using CDC life tables).
The surname Gilman appears at a rate of 4.05 per 100,000 residents in the 2010 Census Bureau surname file, which translates to a frequency of 0.0040%.
Multiplying these two independent frequencies against the current US population of 342,754,338 gives an expected count of approximately 9 people with the full name Billy Gilman. This assumes statistical independence between first and last names, which is a simplification but produces reasonable estimates for most combinations.
Related
Other people named Billy
FAQ
Billy Gilman: questions and answers
How many people are named Billy Gilman?
We estimate approximately 9 people in the United States share the full name Billy Gilman. That works out to about 1 in 38,083,815 Americans. This is calculated by combining the first-name frequency (0.0623%) with the surname frequency (4.05 per 100K) against the current US population.
How rare is the name Billy Gilman?
We classify Billy Gilman as "Very Rare". About 1 in 38,083,815 Americans share this exact first and last name combination.
Is Billy a male or female name?
Billy is predominantly male. Out of 389,442 total SSA registrations, 98.6% were male and 1.4% were female. See the full Billy 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.