Morton Dacosta
There are approximately 1 people named Morton Dacosta 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 Morton with Census Bureau frequency data for the surname Dacosta. 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 Morton
2.1K
Alive today
Named Dacosta
8.5K
Alive today
US population
343M
Denominator
Estimated living: 2.1K
Rarity: Rare
Gender: Male
Peak year: 1923
Average age: 76
Top Census group: White (90.7%)
Estimated bearers: 8.5K
Rarity: Rare
Census rank: #4,658
Per 100K: 2.47
Top ancestry: White (55.3%)
First name trend
Morton: popularity over time
Year-by-year SSA birth registrations for the first name Morton. The peak year was 1923 with 482 births. The average person named Morton today is 76 years old.
Babies born per year
Demographics
Ancestry and ethnicity for Morton
Self-reported race and ethnicity breakdown for people with the first name Morton, from the 2020 US Census Bureau first-name tables. The largest published group is White at 90.7%.
The bar chart below shows how people with the first name Morton 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 Morton at the time of the Census. A first name does not determine a person's race or ethnicity.
- White90.7% · 2,832
- Black or African American4.9% · 152
- Asian and Pacific Islander1.6% · 50
- Two or more races1.3% · 41
- Hispanic or Latino1.2% · 36
- American Indian and Alaska Native0.4% · 12
Ethnicity
Ancestry of the Dacosta surname
Self-reported race and ethnicity breakdown for people with the surname Dacosta, from the 2020 US Census Bureau. The largest group is White at 55.3%.
The bar chart below shows how people with the surname Dacosta 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 Dacosta at the time of the Census. A surname does not determine a person's race or ethnicity.
- White55.3% · 4,079
- Black or African American24.4% · 1,801
- Hispanic or Latino12.0% · 887
- Two or more races4.9% · 361
- Asian and Pacific Islander3.3% · 243
- American Indian and Alaska Native0.1% · 9
Methodology
How we calculated this
The first name Morton has a living-bearer frequency of 0.0006% of the US population, based on 2,111 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 Morton right now.
The surname Dacosta appears at a rate of 2.47 per 100,000 residents in the 2020 Census Bureau surname file, which translates to a frequency of 0.0025%.
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 Morton Dacosta. This assumes statistical independence between first and last names, which is a simplification but produces reasonable estimates for most combinations.
FAQ
Morton Dacosta: questions and answers
How many people are named Morton Dacosta?
We estimate approximately 1 people in the United States share the full name Morton Dacosta. That works out to about 1 in 342,754,338 Americans. This is calculated by combining the first-name frequency (0.0006%) with the surname frequency (2.47 per 100K) against the current US population.
How rare is the name Morton Dacosta?
We classify Morton Dacosta as "Very Rare". About 1 in 342,754,338 Americans share this exact first and last name combination.
Is Morton a male or female name?
Morton is predominantly male. Out of 12,341 total SSA registrations, 100.0% were male and 0.0% were female. See the full Morton 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 common is the name Morton Dacosta?
Find out how many people are called Morton Dacosta on our sister site HowManyOfMe.org — a quick modern estimate with the living-bearer count front and centre.