Zachary Underwood
There are approximately 97 people named Zachary Underwood living in the United States today. That makes this name combination very rare, occurring at a rate of about 1 in 3,533,550 Americans.
This estimate combines SSA birth records for the first name Zachary with Census Bureau frequency data for the surname Underwood. Below you will find a breakdown of both names, including popularity trends, gender data, and Census demographics where available.
Expected bearers
97
1 in 3,533,550
Named Zachary
537K
Alive today
Named Underwood
62K
Alive today
US population
343M
Denominator
Estimated living: 537K
Rarity: Very Common
Gender: Male
Peak year: 1993
Average age: 29
Top Census group: White (83.9%)
Estimated bearers: 62K
Rarity: Uncommon
Census rank: #607
Per 100K: 18.09
Top ancestry: White (76.1%)
First name trend
Zachary: popularity over time
Year-by-year SSA birth registrations for the first name Zachary. The peak year was 1993 with 25,590 births. The average person named Zachary today is 29 years old.
Babies born per year
Demographics
Ancestry and ethnicity for Zachary
Self-reported race and ethnicity breakdown for people with the first name Zachary, from the 2020 US Census Bureau first-name tables. The largest published group is White at 83.9%.
The bar chart below shows how people with the first name Zachary described their own race and ethnicity on the 2020 Census form. These are self-reported numbers, and they describe the population who happened to carry the name Zachary at the time of the Census. A first name does not determine a person's race or ethnicity.
- White83.9% · 365,155
- Hispanic or Latino6.1% · 26,734
- Two or more races4.6% · 20,008
- Black or African American3.2% · 14,112
- Asian and Pacific Islander1.6% · 6,857
- American Indian and Alaska Native0.6% · 2,394
Ethnicity
Ancestry of the Underwood surname
Self-reported race and ethnicity breakdown for people with the surname Underwood, from the 2020 US Census Bureau. The largest group is White at 76.1%.
The bar chart below shows how people with the surname Underwood described their own race and ethnicity on the 2020 Census form. These are self-reported numbers, and they describe the population who happened to carry the surname Underwood at the time of the Census. A surname does not determine a person's race or ethnicity.
- White76.1% · 41,148
- Black or African American14.7% · 7,949
- Two or more races4.4% · 2,381
- Hispanic or Latino3.2% · 1,713
- American Indian and Alaska Native1.0% · 560
- Asian and Pacific Islander0.6% · 332
Methodology
How we calculated this
The first name Zachary has a living-bearer frequency of 0.1566% of the US population, based on 536,589 estimated living Americans carrying this first name (from SSA birth records going back to 1880, adjusted for mortality using CDC life tables).
Even though the Census Bureau now publishes first-name tables, we do not use that file as the main first-name input for this estimate. The latest first-name Census snapshot is from 2020, which makes it 6 years old today. Because Census first-name data is only released once every 10 years, SSA birth records plus CDC survival rates give a better current estimate of how many people are likely alive with the name Zachary right now.
The surname Underwood appears at a rate of 18.09 per 100,000 residents in the 2020 Census Bureau surname file, which translates to a frequency of 0.0181%.
Multiplying these two independent frequencies against the current US population of 342,754,338 gives an expected count of approximately 97 people with the full name Zachary 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 Zachary
Related
Other people with the surname Underwood
FAQ
Zachary Underwood: questions and answers
How many people are named Zachary Underwood?
We estimate approximately 97 people in the United States share the full name Zachary Underwood. That works out to about 1 in 3,533,550 Americans. This is calculated by combining the first-name frequency (0.1566%) with the surname frequency (18.09 per 100K) against the current US population.
How rare is the name Zachary Underwood?
We classify Zachary Underwood as "Very Rare". About 1 in 3,533,550 Americans share this exact first and last name combination.
Is Zachary a male or female name?
Zachary is predominantly male. Out of 551,618 total SSA registrations, 99.7% were male and 0.3% were female. See the full Zachary 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 2020 US Census Bureau decennial surname tables. Living-bearer estimates use CDC actuarial life tables to adjust for mortality. Read the full methodology.
How many people share the full name Zachary Underwood?
For a quick modern estimate, our sister site HowManyOfMe.org answers that in one glance, with the living-bearer count front and centre.