How Many People Are Named Cydney?
An estimated 4,854 people in the United States have the first name Cydney. It is predominantly female (99.5%). The average bearer is 31 years old, and Cydney peaked in popularity in 2000 with 230 births that year.
Below you will find a full statistical profile of Cydney 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 Cydney paired with any surname.
Estimated Living Americans
4,854
About 1 in 70,613 people in the U.S.
Rarity
Rare
Predicted Gender
Female
99.5% confidence
Average Age
31
years old
Peak Year
2000
230 births
Total Registered
5,160
since 1880
Gender Distribution for Cydney
Cydney is almost exclusively a female name. Out of 5,160 total births registered, 99.5% were female.
Cydney as a male name
Ranked #10,355 in 2005
6 male births in 2005
Peak: 1996 (8 births)
Cydney as a female name
Ranked #7,654 in 2024
14 female births in 2024
Peak: 1998 (227 births)
Cydney: Popularity Over Time
SSA records for Cydney span from the 1940s to the 2020s, covering 9 decades of naming data. The most popular decade for this name was the 1990s, when 1,775 babies were registered. Cydney has declined significantly from its peak in the 1990s. Recent registrations are a fraction of what they were at the name's height.
Cydney by Decade
How has Cydney 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.
Cydney by State
Birth registrations for Cydney span all 32 states and territories in the SSA database. The highest counts are in California, Texas, Georgia. The lowest are in West Virginia, South Carolina, Alaska. On average, about 77 Cydneys were registered per state.
Cydney + Last Name Combinations
How many people share a full name with Cydney as the first name? Click a combination below to see the estimate, or search any pairing.
Names Similar to Cydney
Other first names starting with C with a similar number of bearers.
Cydney: Questions and Answers
How many people in the U.S. are named Cydney?
We estimate approximately 4,854 people named Cydney 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 70,613 Americans share this first name.
Is Cydney a common name?
Cydney is classified as "Rare" and is more popular than 96.5% of all first names in the SSA database. A total of 5,160 births have been registered with this name since 1880.
When was Cydney most popular?
Cydney reached peak popularity in 2000, when 230 babies were given this name. The average age of a living person named Cydney is approximately 31 years old, reflecting when the name was most commonly given.
Is Cydney a female name?
Cydney is predominantly female. 99.5% of people with this name are female. See the gender breakdown above for full details.
How many Cydney Smiths are there?
To find how many people share a specific full name, we combine first name and surname frequencies. Try: Cydney Smith, Cydney Johnson, Cydney 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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