How Many People Are Named Ruth Kosmerl?

There are approximately 1 people named Ruth Kosmerl 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 Ruth with Census Bureau frequency data for the surname Kosmerl. 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

Ruth

Last Name

Kosmerl

Ruth: Popularity Over Time

Year-by-year SSA birth registrations for the first name Ruth. The peak year was 1920 with 26,156 births. The average person named Ruth today is 62 years old.

Male

Female

Ancestry of the First Name Ruth

In the 2020 Census, the first name Ruth was most commonly recorded among people who identified as White (71.09%). The next largest recorded groups were Hispanic (15.26%) and Black (9.17%).

These percentages describe the people who had the first name Ruth 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 Ruth rose or fell over time.

White

71.09%

Black

9.17%

Hispanic

15.26%

Asian/Pacific Islander

2.32%

American Indian/Alaska Native

0.49%

Two or More Races

1.68%

Ancestry of the Kosmerl Surname

The surname Kosmerl 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 Kosmerl 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

93.04%

Hispanic

2.61%

Two or More Races

4.35%

How we calculated this

The first name "Ruth" has an estimated frequency of 0.0559% among living Americans, based on SSA birth records from 1880 to 2024 adjusted for mortality using CDC 2023 life tables.

The surname "Kosmerl" 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 Ruth 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 Ruth

Ruth Smith Ruth Johnson Ruth Williams Ruth Brown Ruth Jones Ruth Garcia Ruth Gray Ruth Gilbert

Other people with the surname Kosmerl

Michael Kosmerl James Kosmerl William Kosmerl David Kosmerl John Kosmerl Robert Kosmerl Paul Kosmerl

Ruth Kosmerl: Questions and Answers

How many people are named Ruth Kosmerl?

We estimate approximately 1 people named Ruth Kosmerl are alive in the United States today. The first name Ruth is shared by 191,718 Americans, and the surname Kosmerl is shared by 132.

How rare is the name Ruth Kosmerl?

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

Is Ruth a male or female name?

Ruth is predominantly female, with 0.3% of bearers being male and 99.7% female. It peaked in popularity in 1920 and the average bearer today is 62 years old.

What does the Census say about the first name Ruth?

In the 2020 Census, the first name Ruth was most commonly recorded among people who identified as White (71.09%). The next largest recorded groups were Hispanic (15.26%) and Black (9.17%). 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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