How Many People Are Named Shelby Kalfas?

There are approximately 1 people named Shelby Kalfas 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 Shelby with Census Bureau frequency data for the surname Kalfas. 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

Shelby

Last Name

Kalfas

Shelby: Popularity Over Time

Year-by-year SSA birth registrations for the first name Shelby. The peak year was 1991 with 10,744 births. The average person named Shelby today is 33 years old.

Male

Female

Ancestry of the First Name Shelby

In the 2020 Census, the first name Shelby was most commonly recorded among people who identified as White (85.31%). The next largest recorded groups were Hispanic (4.48%) and Black (4.32%).

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

White

85.31%

Black

4.32%

Hispanic

4.48%

Asian/Pacific Islander

0.75%

American Indian/Alaska Native

1.05%

Two or More Races

4.10%

Ancestry of the Kalfas Surname

The surname Kalfas 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 Kalfas 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

92.40%

Black

0.29%

Hispanic

3.22%

Two or More Races

4.09%

How we calculated this

The first name "Shelby" has an estimated frequency of 0.0428% among living Americans, based on SSA birth records from 1880 to 2024 adjusted for mortality using CDC 2023 life tables.

The surname "Kalfas" appears at a rate of 0.11 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 Shelby 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 Shelby

Shelby Smith Shelby Johnson Shelby Williams Shelby Brown Shelby Jones Shelby Garcia Shelby Hinds

Shelby Kalfas: Questions and Answers

How many people are named Shelby Kalfas?

We estimate approximately 1 people named Shelby Kalfas are alive in the United States today. The first name Shelby is shared by 146,533 Americans, and the surname Kalfas is shared by 392.

How rare is the name Shelby Kalfas?

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

Is Shelby a male or female name?

Shelby is predominantly female, with 10.0% of bearers being male and 90.0% female. It peaked in popularity in 1991 and the average bearer today is 33 years old.

What does the Census say about the first name Shelby?

In the 2020 Census, the first name Shelby was most commonly recorded among people who identified as White (85.31%). The next largest recorded groups were Hispanic (4.48%) and Black (4.32%). 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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