Jay Underwood
There are approximately 28 people named Jay Underwood living in the United States today. That makes this name combination very rare, occurring at a rate of about 1 in 12,241,226 Americans.
This estimate combines SSA birth records for the first name Jay with Census Bureau frequency data for the surname Underwood. Below you will find a breakdown of both names, including popularity trends, gender data, and ancestry information.
Expected bearers
28
1 in 12,241,226
Named Jay
146K
Alive today
Named Underwood
66K
Alive today
US population
343M
Denominator
Estimated living: 146K
Rarity: Common
Gender: Male
Peak year: 1960
Average age: 53
Estimated bearers: 66K
Rarity: Uncommon
Census rank: #588
Per 100K: 19.35
Top ancestry: White (79.2%)
First name trend
Jay: popularity over time
Year-by-year SSA birth registrations for the first name Jay. The peak year was 1960 with 5,427 births. The average person named Jay today is 53 years old.
Babies born per year
Ethnicity
Ancestry of the Underwood surname
Self-reported race and ethnicity breakdown for people with the surname Underwood, from the 2010 US Census Bureau. The largest group is White at 79.2%.
- White79.2%
- Black or African American15.0%
- Hispanic or Latino2.2%
- Two or more races2.0%
- American Indian and Alaska Native1.1%
- Asian and Pacific Islander0.5%
Methodology
How we calculated this
The first name Jay has a living-bearer frequency of 0.0427% of the US population, based on 146,487 estimated living Americans carrying this first name (from SSA birth records going back to 1880, adjusted for mortality using CDC life tables).
The surname Underwood appears at a rate of 19.35 per 100,000 residents in the 2010 Census Bureau surname file, which translates to a frequency of 0.0194%.
Multiplying these two independent frequencies against the current US population of 342,754,338 gives an expected count of approximately 28 people with the full name Jay Underwood. This assumes statistical independence between first and last names, which is a simplification but produces reasonable estimates for most combinations.
Related
Other people named Jay
Related
Other people with the surname Underwood
FAQ
Jay Underwood: questions and answers
How many people are named Jay Underwood?
We estimate approximately 28 people in the United States share the full name Jay Underwood. That works out to about 1 in 12,241,226 Americans. This is calculated by combining the first-name frequency (0.0427%) with the surname frequency (19.35 per 100K) against the current US population.
How rare is the name Jay Underwood?
We classify Jay Underwood as "Very Rare". About 1 in 12,241,226 Americans share this exact first and last name combination.
Is Jay a male or female name?
Jay is predominantly male. Out of 197,300 total SSA registrations, 98.7% were male and 1.3% were female. See the full Jay 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.