Alonzo Mourning
There are approximately 1 people named Alonzo Mourning 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 Alonzo with Census Bureau frequency data for the surname Mourning. 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 Alonzo
32K
Alive today
Named Mourning
933
Alive today
US population
343M
Denominator
Estimated living: 32K
Rarity: Uncommon
Gender: Male
Peak year: 2022
Average age: 38
Top Census group: Black or African American (48.1%)
Estimated bearers: 933
Rarity: Very Rare
Census rank: #30,661
Per 100K: 0.27
Top ancestry: White (62.8%)
First name trend
Alonzo: popularity over time
Year-by-year SSA birth registrations for the first name Alonzo. The peak year was 2022 with 651 births. The average person named Alonzo today is 38 years old.
Babies born per year
Demographics
Ancestry and ethnicity for Alonzo
Self-reported race and ethnicity breakdown for people with the first name Alonzo, from the 2020 US Census Bureau first-name tables. The largest published group is Black or African American at 48.1%.
The bar chart below shows how people with the first name Alonzo 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 Alonzo at the time of the Census. A first name does not determine a person's race or ethnicity.
- Black or African American48.1% · 11,751
- Hispanic or Latino38.4% · 9,381
- White8.7% · 2,118
- Two or more races3.1% · 770
- American Indian and Alaska Native1.1% · 271
- Asian and Pacific Islander0.6% · 156
Ethnicity
Ancestry of the Mourning surname
Self-reported race and ethnicity breakdown for people with the surname Mourning, from the 2020 US Census Bureau. The largest group is White at 62.8%.
The bar chart below shows how people with the surname Mourning 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 Mourning at the time of the Census. A surname does not determine a person's race or ethnicity.
- White62.8% · 511
- Black or African American27.5% · 224
- Hispanic or Latino4.7% · 38
- Two or more races4.3% · 35
- Asian and Pacific Islander0.5% · 4
- American Indian and Alaska Native0.2% · 2
Methodology
How we calculated this
The first name Alonzo has a living-bearer frequency of 0.0094% of the US population, based on 32,242 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 Alonzo right now.
The surname Mourning appears at a rate of 0.27 per 100,000 residents in the 2020 Census Bureau surname file, which translates to a frequency of 0.0003%.
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 Alonzo Mourning. This assumes statistical independence between first and last names, which is a simplification but produces reasonable estimates for most combinations.
FAQ
Alonzo Mourning: questions and answers
How many people are named Alonzo Mourning?
We estimate approximately 1 people in the United States share the full name Alonzo Mourning. That works out to about 1 in 342,754,338 Americans. This is calculated by combining the first-name frequency (0.0094%) with the surname frequency (0.27 per 100K) against the current US population.
How rare is the name Alonzo Mourning?
We classify Alonzo Mourning as "Very Rare". About 1 in 342,754,338 Americans share this exact first and last name combination.
Is Alonzo a male or female name?
Alonzo is predominantly male. Out of 45,514 total SSA registrations, 99.7% were male and 0.3% were female. See the full Alonzo 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 Alonzo Mourning?
You can see how many people are called Alonzo Mourning on our sister site HowManyOfMe.org — same data roots, lighter UI.