Kristin Thomas
There are approximately 423 people named Kristin Thomas living in the United States today. That makes this name combination very rare, occurring at a rate of about 1 in 810,294 Americans.
This estimate combines SSA birth records for the first name Kristin with Census Bureau frequency data for the surname Thomas. Below you will find a breakdown of both names, including popularity trends, gender data, and ancestry information.
Expected bearers
423
1 in 810,294
Named Kristin
165K
Alive today
Named Thomas
879K
Alive today
US population
343M
Denominator
Estimated living: 165K
Rarity: Common
Gender: Female
Peak year: 1981
Average age: 45
Estimated bearers: 879K
Rarity: Very Common
Census rank: #16
Per 100K: 256.34
Top ancestry: White (52.6%)
First name trend
Kristin: popularity over time
Year-by-year SSA birth registrations for the first name Kristin. The peak year was 1981 with 9,801 births. The average person named Kristin today is 45 years old.
Babies born per year
Ethnicity
Ancestry of the Thomas surname
Self-reported race and ethnicity breakdown for people with the surname Thomas, from the 2010 US Census Bureau. The largest group is White at 52.6%.
- White52.6%
- Black or African American38.8%
- Two or more races2.6%
- Hispanic or Latino2.5%
- Asian and Pacific Islander2.4%
- American Indian and Alaska Native1.1%
Methodology
How we calculated this
The first name Kristin has a living-bearer frequency of 0.0481% of the US population, based on 164,999 estimated living Americans carrying this first name (from SSA birth records going back to 1880, adjusted for mortality using CDC life tables).
The surname Thomas appears at a rate of 256.34 per 100,000 residents in the 2010 Census Bureau surname file, which translates to a frequency of 0.2563%.
Multiplying these two independent frequencies against the current US population of 342,754,338 gives an expected count of approximately 423 people with the full name Kristin Thomas. This assumes statistical independence between first and last names, which is a simplification but produces reasonable estimates for most combinations.
Related
Other people named Kristin
Related
Other people with the surname Thomas
FAQ
Kristin Thomas: questions and answers
How many people are named Kristin Thomas?
We estimate approximately 423 people in the United States share the full name Kristin Thomas. That works out to about 1 in 810,294 Americans. This is calculated by combining the first-name frequency (0.0481%) with the surname frequency (256.34 per 100K) against the current US population.
How rare is the name Kristin Thomas?
We classify Kristin Thomas as "Very Rare". About 1 in 810,294 Americans share this exact first and last name combination.
Is Kristin a male or female name?
Kristin is predominantly female. Out of 180,924 total SSA registrations, 0.9% were male and 99.1% were female. See the full Kristin 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.