Kathia Diaz
There are approximately 2 people named Kathia Diaz living in the United States today. That makes this name combination very rare, occurring at a rate of about 1 in 171,377,169 Americans.
This estimate combines SSA birth records for the first name Kathia with Census Bureau frequency data for the surname Diaz. Below you will find a breakdown of both names, including popularity trends, gender data, and Census demographics where available.
Expected bearers
2
1 in 171,377,169
Named Kathia
1.4K
Alive today
Named Diaz
409K
Alive today
US population
343M
Denominator
Estimated living: 1.4K
Rarity: Rare
Gender: Female
Peak year: 1996
Average age: 24
Top Census group: Hispanic or Latino (86.4%)
Estimated bearers: 409K
Rarity: Common
Census rank: #52
Per 100K: 119.41
Top ancestry: Hispanic (91.9%)
First name trend
Kathia: popularity over time
Year-by-year SSA birth registrations for the first name Kathia. The peak year was 1996 with 99 births. The average person named Kathia today is 24 years old.
Babies born per year
Demographics
Ancestry and ethnicity for Kathia
Self-reported race and ethnicity breakdown for people with the first name Kathia, from the 2020 US Census Bureau first-name tables. The largest published group is Hispanic or Latino at 86.4%.
The bar chart below shows how people with the first name Kathia 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 Kathia at the time of the Census. A first name does not determine a person's race or ethnicity.
- Hispanic or Latino86.4% · 1,897
- Black or African American7.7% · 168
- White4.9% · 107
- Asian and Pacific Islander0.6% · 13
- Two or more races0.4% · 9
- American Indian and Alaska Native0.0% · 1
Ethnicity
Ancestry of the Diaz surname
Self-reported race and ethnicity breakdown for people with the surname Diaz, from the 2020 US Census Bureau. The largest group is Hispanic at 91.9%.
The bar chart below shows how people with the surname Diaz 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 Diaz at the time of the Census. A surname does not determine a person's race or ethnicity.
- Hispanic or Latino91.9% · 328,082
- White5.4% · 19,215
- Asian and Pacific Islander1.3% · 4,807
- Black or African American0.8% · 2,737
- Two or more races0.4% · 1,407
- American Indian and Alaska Native0.2% · 662
Methodology
How we calculated this
The first name Kathia has a living-bearer frequency of 0.0004% of the US population, based on 1,425 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 Kathia right now.
The surname Diaz appears at a rate of 119.41 per 100,000 residents in the 2020 Census Bureau surname file, which translates to a frequency of 0.1194%.
Multiplying these two independent frequencies against the current US population of 342,754,338 gives an expected count of approximately 2 people with the full name Kathia Diaz. This assumes statistical independence between first and last names, which is a simplification but produces reasonable estimates for most combinations.
Related
Other people with the surname Diaz
FAQ
Kathia Diaz: questions and answers
How many people are named Kathia Diaz?
We estimate approximately 2 people in the United States share the full name Kathia Diaz. That works out to about 1 in 171,377,169 Americans. This is calculated by combining the first-name frequency (0.0004%) with the surname frequency (119.41 per 100K) against the current US population.
How rare is the name Kathia Diaz?
We classify Kathia Diaz as "Very Rare". About 1 in 171,377,169 Americans share this exact first and last name combination.
Is Kathia a male or female name?
Kathia is predominantly female. Out of 1,463 total SSA registrations, 0.0% were male and 100.0% were female. See the full Kathia 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 named Kathia Diaz?
Find out how many people are called Kathia Diaz on our sister site HowManyOfMe.org — a quick modern estimate with the living-bearer count front and centre.