Mason Kim
There are approximately 304 people named Mason Kim living in the United States today. That makes this name combination very rare, occurring at a rate of about 1 in 1,127,481 Americans.
This estimate combines SSA birth records for the first name Mason with Census Bureau frequency data for the surname Kim. Below you will find a breakdown of both names, including popularity trends, gender data, and Census demographics where available.
Expected bearers
304
1 in 1,127,481
Named Mason
332K
Alive today
Named Kim
314K
Alive today
US population
343M
Denominator
Estimated living: 332K
Rarity: Common
Gender: Male
Peak year: 2011
Average age: 16
Top Census group: White (73.3%)
Estimated bearers: 314K
Rarity: Common
Census rank: #71
Per 100K: 91.69
Top ancestry: Asian/Pacific Islander (93.8%)
First name trend
Mason: popularity over time
Year-by-year SSA birth registrations for the first name Mason. The peak year was 2011 with 19,617 births. The average person named Mason today is 16 years old.
Babies born per year
Demographics
Ancestry and ethnicity for Mason
Self-reported race and ethnicity breakdown for people with the first name Mason, from the 2020 US Census Bureau first-name tables. The largest published group is White at 73.3%.
The bar chart below shows how people with the first name Mason 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 Mason at the time of the Census. A first name does not determine a person's race or ethnicity.
- White73.3% · 197,820
- Hispanic or Latino10.8% · 29,089
- Black or African American6.5% · 17,457
- Two or more races5.9% · 15,852
- Asian and Pacific Islander2.8% · 7,563
- American Indian and Alaska Native0.8% · 2,072
Ethnicity
Ancestry of the Kim surname
Self-reported race and ethnicity breakdown for people with the surname Kim, from the 2020 US Census Bureau. The largest group is Asian/Pacific Islander at 93.8%.
The bar chart below shows how people with the surname Kim 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 Kim at the time of the Census. A surname does not determine a person's race or ethnicity.
- Asian and Pacific Islander93.8% · 257,177
- White2.5% · 6,731
- Two or more races2.5% · 6,728
- Hispanic or Latino0.9% · 2,478
- Black or African American0.3% · 912
- American Indian and Alaska Native0.0% · 42
Methodology
How we calculated this
The first name Mason has a living-bearer frequency of 0.0968% of the US population, based on 331,695 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 Mason right now.
The surname Kim appears at a rate of 91.69 per 100,000 residents in the 2020 Census Bureau surname file, which translates to a frequency of 0.0917%.
Multiplying these two independent frequencies against the current US population of 342,754,338 gives an expected count of approximately 304 people with the full name Mason Kim. This assumes statistical independence between first and last names, which is a simplification but produces reasonable estimates for most combinations.
Related
Other people named Mason
Related
Other people with the surname Kim
FAQ
Mason Kim: questions and answers
How many people are named Mason Kim?
We estimate approximately 304 people in the United States share the full name Mason Kim. That works out to about 1 in 1,127,481 Americans. This is calculated by combining the first-name frequency (0.0968%) with the surname frequency (91.69 per 100K) against the current US population.
How rare is the name Mason Kim?
We classify Mason Kim as "Very Rare". About 1 in 1,127,481 Americans share this exact first and last name combination.
Is Mason a male or female name?
Mason is predominantly male. Out of 339,506 total SSA registrations, 99.0% were male and 1.0% were female. See the full Mason 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 are called Mason Kim?
HowManyOfMe.org, our sister site, answers that with the living-bearer count in one glance.