How Many People Are Named Sidnee?
An estimated 614 people in the United States have the first name Sidnee. It is almost exclusively a female name. The average bearer is 25 years old, and Sidnee peaked in popularity in 1999 with 39 births that year.
Below you will find a full statistical profile of Sidnee 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 Sidnee paired with any surname.
Estimated Living Americans
614
About 1 in 558,232 people in the U.S.
Rarity
Very Rare
Predicted Gender
Female
100.0% confidence
Average Age
25
years old
Peak Year
1999
39 births
Total Registered
636
since 1880
Gender Distribution for Sidnee
Sidnee is almost exclusively a female name. Out of 636 total births registered, 100.0% were female.
Sidnee as a female name
Ranked #11,250 in 2019
9 female births in 2019
Peak: 1999 (39 births)
Sidnee: Popularity Over Time
SSA records for Sidnee span from the 1940s to the 2010s, covering 6 decades of naming data. The most popular decade for this name was the 2000s, when 284 babies were registered. Sidnee has declined significantly from its peak in the 2000s. Recent registrations are a fraction of what they were at the name's height.
Sidnee by Decade
How has Sidnee 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.
Sidnee by State
Birth registrations for Sidnee span all 4 states and territories in the SSA database. The highest counts are in California, Ohio, Texas. The lowest are in Utah, Texas, Ohio. On average, about 8 Sidnees were registered per state.
Sidnee + Last Name Combinations
How many people share a full name with Sidnee as the first name? Click a combination below to see the estimate, or search any pairing.
Names Similar to Sidnee
Other first names starting with S with a similar number of bearers.
Sidnee: Questions and Answers
How many people in the U.S. are named Sidnee?
We estimate approximately 614 people named Sidnee 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 558,232 Americans share this first name.
Is Sidnee a common name?
Sidnee is classified as "Very Rare" and is more popular than 86.4% of all first names in the SSA database. A total of 636 births have been registered with this name since 1880.
When was Sidnee most popular?
Sidnee reached peak popularity in 1999, when 39 babies were given this name. The average age of a living person named Sidnee is approximately 25 years old, reflecting when the name was most commonly given.
Is Sidnee a female name?
Sidnee is predominantly female. 100.0% of people with this name are female. See the gender breakdown above for full details.
How many Sidnee Smiths are there?
To find how many people share a specific full name, we combine first name and surname frequencies. Try: Sidnee Smith, Sidnee Johnson, Sidnee 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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