Robert Stack
There are approximately 114 people named Robert Stack living in the United States today. That makes this name combination very rare, occurring at a rate of about 1 in 3,006,617 Americans.
This estimate combines SSA birth records for the first name Robert with Census Bureau frequency data for the surname Stack. Below you will find a breakdown of both names, including popularity trends, gender data, and ancestry information.
Expected bearers
114
1 in 3,006,617
Named Robert
2.8M
Alive today
Named Stack
14K
Alive today
US population
343M
Denominator
Estimated living: 2.8M
Rarity: Very Common
Gender: Male
Peak year: 1947
Average age: 60
Estimated bearers: 14K
Rarity: Uncommon
Census rank: #2,996
Per 100K: 4.06
Top ancestry: White (92.7%)
First name trend
Robert: popularity over time
Year-by-year SSA birth registrations for the first name Robert. The peak year was 1947 with 91,891 births. The average person named Robert today is 60 years old.
Babies born per year
Ethnicity
Ancestry of the Stack surname
Self-reported race and ethnicity breakdown for people with the surname Stack, from the 2010 US Census Bureau. The largest group is White at 92.7%.
- White92.7%
- Hispanic or Latino2.8%
- Black or African American1.8%
- Two or more races1.6%
- Asian and Pacific Islander0.8%
- American Indian and Alaska Native0.4%
Methodology
How we calculated this
The first name Robert has a living-bearer frequency of 0.8168% of the US population, based on 2,799,566 estimated living Americans carrying this first name (from SSA birth records going back to 1880, adjusted for mortality using CDC life tables).
The surname Stack appears at a rate of 4.06 per 100,000 residents in the 2010 Census Bureau surname file, which translates to a frequency of 0.0041%.
Multiplying these two independent frequencies against the current US population of 342,754,338 gives an expected count of approximately 114 people with the full name Robert Stack. This assumes statistical independence between first and last names, which is a simplification but produces reasonable estimates for most combinations.
Related
Other people named Robert
FAQ
Robert Stack: questions and answers
How many people are named Robert Stack?
We estimate approximately 114 people in the United States share the full name Robert Stack. That works out to about 1 in 3,006,617 Americans. This is calculated by combining the first-name frequency (0.8168%) with the surname frequency (4.06 per 100K) against the current US population.
How rare is the name Robert Stack?
We classify Robert Stack as "Very Rare". About 1 in 3,006,617 Americans share this exact first and last name combination.
Is Robert a male or female name?
Robert is predominantly male. Out of 4,866,007 total SSA registrations, 99.6% were male and 0.4% were female. See the full Robert 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.