How Many People Are Named Sydnee?
An estimated 8,049 people in the United States have the first name Sydnee. It is almost exclusively a female name. The average bearer is 24 years old, and Sydnee peaked in popularity in 2003 with 506 births that year.
Below you will find a full statistical profile of Sydnee as a first name in the United States, including gender data, a year-by-year popularity timeline going back to 1880, a decade breakdown, and state-by-state birth registrations. You can also check how many people share the full name Sydnee paired with any surname.
Estimated Living Americans
8,049
About 1 in 42,583 people in the U.S.
Rarity
Rare
Predicted Gender
Female
100.0% confidence
Average Age
24
years old
Peak Year
2003
506 births
Total Registered
8,240
since 1880
Gender Distribution for Sydnee
Sydnee is almost exclusively a female name. Out of 8,240 total births registered, 100.0% were female.
Sydnee as a female name
Ranked #9,457 in 2024
11 female births in 2024
Peak: 2003 (506 births)
Sydnee: Popularity Over Time
SSA records for Sydnee span from the 1940s to the 2020s, covering 9 decades of naming data. The most popular decade for this name was the 2000s, when 3,842 babies were registered. Sydnee has declined significantly from its peak in the 2000s. Recent registrations are a fraction of what they were at the name's height.
Sydnee by Decade
How has Sydnee tracked across different eras? The table below groups all SSA birth registrations into 10-year periods, with separate male and female counts. The colored bar shows each decade's share relative to the peak.
Sydnee by State
Birth registrations for Sydnee span all 42 states and territories in the SSA database. The highest counts are in Texas, California, Utah. The lowest are in Connecticut, South Dakota, North Dakota. On average, about 151 Sydnees were registered per state.
Sydnee + Last Name Combinations
How many people share a full name with Sydnee as the first name? Click a combination below to see the estimate, or search any pairing.
Names Similar to Sydnee
Other first names starting with S with a similar number of bearers.
Sydnee: Questions and Answers
How many people in the U.S. are named Sydnee?
We estimate approximately 8,049 people named Sydnee are alive in the United States today. This is based on SSA birth records from 1880 to 2024, adjusted for mortality using CDC life tables. About 1 in 42,583 Americans share this first name.
Is Sydnee a common name?
Sydnee is classified as "Rare" and is more popular than 97.4% of all first names in the SSA database. A total of 8,240 births have been registered with this name since 1880.
When was Sydnee most popular?
Sydnee reached peak popularity in 2003, when 506 babies were given this name. The average age of a living person named Sydnee is approximately 24 years old, reflecting when the name was most commonly given.
Is Sydnee a female name?
Sydnee is predominantly female. 100.0% of people with this name are female. See the gender breakdown above for full details.
How many Sydnee Smiths are there?
To find how many people share a specific full name, we combine first name and surname frequencies. Try: Sydnee Smith, Sydnee Johnson, Sydnee Williams. You can also search any combination on our homepage.
Where does this data come from?
Our estimates use Social Security Administration birth records (1880 to 2024), adjusted for survival using CDC 2023 life tables broken down by sex. The U.S. population figure (342,754,338) is from the Census Bureau's July 2025 estimate. Full methodology.
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