How Many People Are Named Senna Williams?

There are approximately 6 people named Senna Williams living in the United States today. That makes this name combination very rare, occurring at a rate of about 1 in 57,125,723 Americans.

This estimate combines SSA birth records for the first name Senna with Census Bureau frequency data for the surname Williams. 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 57,125,723 Americans

Combination Rarity

Very Rare

Very Rare Very Common

First Name

Senna

Last Name

Williams

Est. Bearers 1,790,492

Census Rank #3

Per 100K 522.38

Rarity Very Common

Senna: Popularity Over Time

Year-by-year SSA birth registrations for the first name Senna. The peak year was 2023 with 112 births. The average person named Senna today is 12 years old.

Male

Female

Ancestry of the First Name Senna

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

White

57.18%

Black

4.87%

Hispanic

9.35%

Asian/Pacific Islander

11.73%

American Indian/Alaska Native

1.05%

Two or More Races

15.81%

Ancestry of the Williams Surname

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

This is a self-reported race and ethnicity breakdown for people who had the surname Williams 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

43.82%

Black

46.22%

Hispanic

3.50%

Asian/Pacific Islander

0.59%

American Indian/Alaska Native

0.78%

Two or More Races

5.08%

How we calculated this

The first name "Senna" has an estimated frequency of < 0.0001% among living Americans, based on SSA birth records from 1880 to 2024 adjusted for mortality using CDC 2023 life tables.

The surname "Williams" appears at a rate of 522.38 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 Senna are likely to be alive now.

Multiplying these frequencies against the U.S. population of ~343 million gives 6 estimated people. This assumes first names and last names are statistically independent. Full methodology.

Other people named Senna

Senna Smith Senna Johnson Senna Brown Senna Jones Senna Garcia

Other people with the surname Williams

Michael Williams James Williams John Williams David Williams Robert Williams William Williams Christopher Williams Joseph Williams

Senna Williams: Questions and Answers

How many people are named Senna Williams?

We estimate approximately 6 people named Senna Williams are alive in the United States today. The first name Senna is shared by 1,058 Americans, and the surname Williams is shared by 1,790,492.

How rare is the name Senna Williams?

This name combination is classified as Very Rare, occurring at a rate of about 1 in 57,125,723 Americans. The first name Senna is rare and the surname Williams is very common.

Is Senna a male or female name?

Senna is predominantly female, with 8.7% of bearers being male and 91.3% female. It peaked in popularity in 2023 and the average bearer today is 12 years old.

What does the Census say about the first name Senna?

In the 2020 Census, the first name Senna was most commonly recorded among people who identified as White (57.18%). The next largest recorded groups were Two or More Races (15.81%) and Asian and Pacific Islander (11.73%). 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.

Try another name