How Many People Are Named Sydnee Williams?

There are approximately 42 people named Sydnee Williams living in the United States today. That makes this name combination rare, occurring at a rate of about 1 in 8,160,818 Americans.

This estimate combines SSA birth records for the first name Sydnee 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 8,160,818 Americans

Combination Rarity

Rare

Very Rare Very Common

First Name

Sydnee

Last Name

Williams

Est. Bearers 1,790,492

Census Rank #3

Per 100K 522.38

Rarity Very Common

Sydnee: Popularity Over Time

Year-by-year SSA birth registrations for the first name Sydnee. The peak year was 2003 with 506 births. The average person named Sydnee today is 24 years old.

Ancestry of the First Name Sydnee

In the 2020 Census, the first name Sydnee was most commonly recorded among people who identified as White (67.69%). The next largest recorded groups were Black (16.89%) and Hispanic (6.89%).

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

White

67.69%

Black

16.89%

Hispanic

6.89%

Asian/Pacific Islander

1.62%

American Indian/Alaska Native

0.81%

Two or More Races

6.10%

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 "Sydnee" 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 Sydnee are likely to be alive now.

Multiplying these frequencies against the U.S. population of ~343 million gives 42 estimated people. This assumes first names and last names are statistically independent. Full methodology.

Other people named Sydnee

Sydnee Smith Sydnee Johnson Sydnee Jones Sydnee Brown Sydnee Garcia

Other people with the surname Williams

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

Sydnee Williams: Questions and Answers

How many people are named Sydnee Williams?

We estimate approximately 42 people named Sydnee Williams are alive in the United States today. The first name Sydnee is shared by 8,049 Americans, and the surname Williams is shared by 1,790,492.

How rare is the name Sydnee Williams?

This name combination is classified as Rare, occurring at a rate of about 1 in 8,160,818 Americans. The first name Sydnee is rare and the surname Williams is very common.

Is Sydnee a male or female name?

Sydnee is predominantly female, with 0.0% of bearers being male and 100.0% female. It peaked in popularity in 2003 and the average bearer today is 24 years old.

What does the Census say about the first name Sydnee?

In the 2020 Census, the first name Sydnee was most commonly recorded among people who identified as White (67.69%). The next largest recorded groups were Black (16.89%) and Hispanic (6.89%). 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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