Thelonious Dolan
There are approximately 1 people named Thelonious Dolan living in the United States today. That makes this name combination very rare, occurring at a rate of about 1 in 342,754,338 Americans.
This estimate combines SSA birth records for the first name Thelonious with Census Bureau frequency data for the surname Dolan. Below you will find a breakdown of both names, including popularity trends, gender data, and Census demographics where available.
Expected bearers
1
1 in 342,754,338
Named Thelonious
444
Alive today
Named Dolan
30K
Alive today
US population
343M
Denominator
Estimated living: 444
Rarity: Very Rare
Gender: Male
Peak year: 2017
Average age: 20
Top Census group: White (36.6%)
Estimated bearers: 30K
Rarity: Uncommon
Census rank: #1,312
Per 100K: 8.80
Top ancestry: White (92.3%)
First name trend
Thelonious: popularity over time
Year-by-year SSA birth registrations for the first name Thelonious. The peak year was 2017 with 23 births. The average person named Thelonious today is 20 years old.
Babies born per year
Demographics
Ancestry and ethnicity for Thelonious
Self-reported race and ethnicity breakdown for people with the first name Thelonious, from the 2020 US Census Bureau first-name tables. The largest published group is White at 36.6%.
The bar chart below shows how people with the first name Thelonious 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 Thelonious at the time of the Census. A first name does not determine a person's race or ethnicity.
- White36.6% · 135
- Black or African American33.9% · 125
- Two or more races17.3% · 64
- Hispanic or Latino8.7% · 32
- Asian and Pacific Islander2.4% · 9
- American Indian and Alaska Native1.1% · 4
Ethnicity
Ancestry of the Dolan surname
Self-reported race and ethnicity breakdown for people with the surname Dolan, from the 2020 US Census Bureau. The largest group is White at 92.3%.
The bar chart below shows how people with the surname Dolan 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 Dolan at the time of the Census. A surname does not determine a person's race or ethnicity.
- White92.3% · 24,273
- Hispanic or Latino3.4% · 895
- Two or more races2.6% · 688
- Asian and Pacific Islander1.0% · 258
- Black or African American0.4% · 105
- American Indian and Alaska Native0.3% · 81
Methodology
How we calculated this
The first name Thelonious has a living-bearer frequency of 0.0001% of the US population, based on 444 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 Thelonious right now.
The surname Dolan appears at a rate of 8.80 per 100,000 residents in the 2020 Census Bureau surname file, which translates to a frequency of 0.0088%.
Multiplying these two independent frequencies against the current US population of 342,754,338 gives an expected count of approximately 1 people with the full name Thelonious Dolan. This assumes statistical independence between first and last names, which is a simplification but produces reasonable estimates for most combinations.
Related
Other people named Thelonious
FAQ
Thelonious Dolan: questions and answers
How many people are named Thelonious Dolan?
We estimate approximately 1 people in the United States share the full name Thelonious Dolan. That works out to about 1 in 342,754,338 Americans. This is calculated by combining the first-name frequency (0.0001%) with the surname frequency (8.80 per 100K) against the current US population.
How rare is the name Thelonious Dolan?
We classify Thelonious Dolan as "Very Rare". About 1 in 342,754,338 Americans share this exact first and last name combination.
Is Thelonious a male or female name?
Thelonious is predominantly male. Out of 455 total SSA registrations, 100.0% were male and 0.0% were female. See the full Thelonious 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 Thelonious Dolan?
If you just want to know how many people are called Thelonious Dolan, HowManyOfMe.org gives you the headline number in one glance.