How Many People Are Named Theresa Marosy?

There are approximately 1 people named Theresa Marosy 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 Theresa with Census Bureau frequency data for the surname Marosy. Below you will find a breakdown of both names, including popularity trends, gender data, and Census background data where it is available.

Estimated People with This Name

1 in 342,754,338 Americans

Combination Rarity

Very Rare

Very Rare Very Common

First Name

Theresa

Last Name

Marosy

Theresa: Popularity Over Time

Year-by-year SSA birth registrations for the first name Theresa. The peak year was 1961 with 11,990 births. The average person named Theresa today is 60 years old.

Male

Female

Ancestry of the First Name Theresa

In the 2020 Census, the first name Theresa was most commonly recorded among people who identified as White (76.69%). The next largest recorded groups were Black (10.03%) and Hispanic (7.22%).

These percentages describe the people who had the first name Theresa in the 2020 Census. They do not tell you the deeper origin or meaning of the name itself.

Read this as a snapshot of who already had the name in 2020, not as a trend line. The SSA chart above is still the better way to see how Theresa rose or fell over time.

White

76.69%

Black

10.03%

Hispanic

7.22%

Asian/Pacific Islander

2.74%

American Indian/Alaska Native

0.73%

Two or More Races

2.59%

Ancestry of the Marosy Surname

The surname Marosy was most commonly recorded among people who identified as White in the 2020 Census.

This is a self-reported race and ethnicity breakdown for people who had the surname Marosy in the published Census surname tables. It gives useful context around who was recorded with the name, but it does not tell the full family history of every Boone line.

White

93.91%

Hispanic

6.09%

How we calculated this

The first name "Theresa" has an estimated frequency of 0.0703% among living Americans, based on SSA birth records from 1880 to 2024 adjusted for mortality using CDC 2023 life tables.

The surname "Marosy" appears at a rate of 0.04 per 100,000 people in the 2020 U.S. Census.

We do not use the Census first-name snapshot for the main estimate because it is only published once every 10 years. The latest public first-name Census file is from 2020, which is already 6 years old. SSA birth records plus CDC survival data give a better current estimate of how many people with the first name Theresa are likely to be alive now.

Multiplying these frequencies against the U.S. population of ~343 million gives 1 estimated people. This assumes first names and last names are statistically independent. Full methodology.

Other people named Theresa

Theresa Smith Theresa Johnson Theresa Williams Theresa Brown Theresa Jones Theresa Garcia Theresa Russell Theresa Stone

Other people with the surname Marosy

John Marosy Michael Marosy Robert Marosy James Marosy William Marosy David Marosy

Theresa Marosy: Questions and Answers

How many people are named Theresa Marosy?

We estimate approximately 1 people named Theresa Marosy are alive in the United States today. The first name Theresa is shared by 241,068 Americans, and the surname Marosy is shared by 132.

How rare is the name Theresa Marosy?

This name combination is classified as Very Rare, occurring at a rate of about 1 in 342,754,338 Americans. The first name Theresa is common and the surname Marosy is very rare.

Is Theresa a male or female name?

Theresa is predominantly female, with 0.3% of bearers being male and 99.7% female. It peaked in popularity in 1961 and the average bearer today is 60 years old.

What does the Census say about the first name Theresa?

In the 2020 Census, the first name Theresa was most commonly recorded among people who identified as White (76.69%). The next largest recorded groups were Black (10.03%) and Hispanic (7.22%). These percentages describe the people who had the name in the 2020 Census, not the deeper origin of the name itself.

Where does this data come from?

First name data comes from the Social Security Administration (1880 to 2024), adjusted for survival using CDC 2023 life tables. When available, first-name Census background data comes from the 2020 U.S. Census Bureau first-name tables. Surname data comes from the 2020 U.S. Census Bureau. Full methodology.

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