Mary Moore
There are approximately 3,478 people named Mary Moore living in the United States today. That makes this name combination rare, occurring at a rate of about 1 in 98,549 Americans.
This estimate combines SSA birth records for the first name Mary with Census Bureau frequency data for the surname Moore. Below you will find a breakdown of both names, including popularity trends, gender data, and Census demographics where available.
Expected bearers
3,478
1 in 98,549
Named Mary
1.5M
Alive today
Named Moore
799K
Alive today
US population
343M
Denominator
Estimated living: 1.5M
Rarity: Very Common
Gender: Female
Peak year: 1921
Average age: 65
Top Census group: White (81.1%)
Estimated bearers: 799K
Rarity: Very Common
Census rank: #18
Per 100K: 232.98
Top ancestry: White (63.8%)
First name trend
Mary: popularity over time
Year-by-year SSA birth registrations for the first name Mary. The peak year was 1921 with 74,171 births. The average person named Mary today is 65 years old.
Babies born per year
Demographics
Ancestry and ethnicity for Mary
Self-reported race and ethnicity breakdown for people with the first name Mary, from the 2020 US Census Bureau first-name tables. The largest published group is White at 81.1%.
The bar chart below shows how people with the first name Mary 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 Mary at the time of the Census. A first name does not determine a person's race or ethnicity.
- White81.1% · 1,434,886
- Black or African American9.3% · 164,569
- Hispanic or Latino5.6% · 98,991
- Two or more races1.8% · 32,402
- Asian and Pacific Islander1.5% · 26,838
- American Indian and Alaska Native0.6% · 10,651
Ethnicity
Ancestry of the Moore surname
Self-reported race and ethnicity breakdown for people with the surname Moore, from the 2020 US Census Bureau. The largest group is White at 63.8%.
The bar chart below shows how people with the surname Moore 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 Moore at the time of the Census. A surname does not determine a person's race or ethnicity.
- White63.8% · 444,062
- Black or African American27.0% · 187,883
- Two or more races4.6% · 31,952
- Hispanic or Latino3.4% · 23,617
- American Indian and Alaska Native0.6% · 4,521
- Asian and Pacific Islander0.6% · 4,349
Methodology
How we calculated this
The first name Mary has a living-bearer frequency of 0.4355% of the US population, based on 1,492,757 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 Mary right now.
The surname Moore appears at a rate of 232.98 per 100,000 residents in the 2020 Census Bureau surname file, which translates to a frequency of 0.2330%.
Multiplying these two independent frequencies against the current US population of 342,754,338 gives an expected count of approximately 3,478 people with the full name Mary Moore. This assumes statistical independence between first and last names, which is a simplification but produces reasonable estimates for most combinations.
Related
Other people named Mary
Related
Other people with the surname Moore
FAQ
Mary Moore: questions and answers
How many people are named Mary Moore?
We estimate approximately 3,478 people in the United States share the full name Mary Moore. That works out to about 1 in 98,549 Americans. This is calculated by combining the first-name frequency (0.4355%) with the surname frequency (232.98 per 100K) against the current US population.
How rare is the name Mary Moore?
We classify Mary Moore as "Rare". About 1 in 98,549 Americans share this exact first and last name combination.
Is Mary a male or female name?
Mary is predominantly female. Out of 4,154,332 total SSA registrations, 0.4% were male and 99.6% were female. See the full Mary 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 Americans are named Mary Moore?
For a quick modern estimate, our sister site HowManyOfMe.org answers that in one glance, with the living-bearer count front and centre.