Stephen Kay
There are approximately 56 people named Stephen Kay living in the United States today. That makes this name combination very rare, occurring at a rate of about 1 in 6,120,613 Americans.
This estimate combines SSA birth records for the first name Stephen with Census Bureau frequency data for the surname Kay. Below you will find a breakdown of both names, including popularity trends, gender data, and ancestry information.
Expected bearers
56
1 in 6,120,613
Named Stephen
681K
Alive today
Named Kay
28K
Alive today
US population
343M
Denominator
Estimated living: 681K
Rarity: Very Common
Gender: Male
Peak year: 1952
Average age: 55
Estimated bearers: 28K
Rarity: Uncommon
Census rank: #1,467
Per 100K: 8.25
Top ancestry: White (85.6%)
First name trend
Stephen: popularity over time
Year-by-year SSA birth registrations for the first name Stephen. The peak year was 1952 with 23,081 births. The average person named Stephen today is 55 years old.
Babies born per year
Ethnicity
Ancestry of the Kay surname
Self-reported race and ethnicity breakdown for people with the surname Kay, from the 2010 US Census Bureau. The largest group is White at 85.6%.
- White85.6%
- Black or African American5.9%
- Asian and Pacific Islander3.5%
- Hispanic or Latino2.5%
- Two or more races1.9%
- American Indian and Alaska Native0.6%
Methodology
How we calculated this
The first name Stephen has a living-bearer frequency of 0.1986% of the US population, based on 680,609 estimated living Americans carrying this first name (from SSA birth records going back to 1880, adjusted for mortality using CDC life tables).
The surname Kay appears at a rate of 8.25 per 100,000 residents in the 2010 Census Bureau surname file, which translates to a frequency of 0.0083%.
Multiplying these two independent frequencies against the current US population of 342,754,338 gives an expected count of approximately 56 people with the full name Stephen Kay. This assumes statistical independence between first and last names, which is a simplification but produces reasonable estimates for most combinations.
Related
Other people named Stephen
Related
Other people with the surname Kay
FAQ
Stephen Kay: questions and answers
How many people are named Stephen Kay?
We estimate approximately 56 people in the United States share the full name Stephen Kay. That works out to about 1 in 6,120,613 Americans. This is calculated by combining the first-name frequency (0.1986%) with the surname frequency (8.25 per 100K) against the current US population.
How rare is the name Stephen Kay?
We classify Stephen Kay as "Very Rare". About 1 in 6,120,613 Americans share this exact first and last name combination.
Is Stephen a male or female name?
Stephen is predominantly male. Out of 866,834 total SSA registrations, 99.7% were male and 0.3% were female. See the full Stephen 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.