How Many People Are Named Cidney?
An estimated 866 people in the United States have the first name Cidney. It is predominantly female (98.1%). The average bearer is 27 years old, and Cidney peaked in popularity in 1999 with 58 births that year.
Below you will find a full statistical profile of Cidney 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 Cidney paired with any surname.
Estimated Living Americans
866
About 1 in 395,790 people in the U.S.
Rarity
Very Rare
Predicted Gender
Female
98.1% confidence
Average Age
27
years old
Peak Year
1999
58 births
Total Registered
892
since 1880
Gender Distribution for Cidney
Cidney is predominantly female (98.1%), though 17 male births have been registered. It functions as a unisex name for a small percentage of bearers.
Cidney as a male name
Ranked #12,695 in 2007
5 male births in 2007
Peak: 1967 (7 births)
Cidney as a female name
Ranked #16,399 in 2017
5 female births in 2017
Peak: 1999 (58 births)
Cidney: Popularity Over Time
SSA records for Cidney span from the 1940s to the 2010s, covering 8 decades of naming data. The most popular decade for this name was the 2000s, when 364 babies were registered. Cidney has declined significantly from its peak in the 2000s. Recent registrations are a fraction of what they were at the name's height.
Cidney by Decade
How has Cidney 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.
Cidney by State
Birth registrations for Cidney span all 5 states and territories in the SSA database. The highest counts are in Texas, California, Florida. The lowest are in Tennessee, Georgia, Florida. On average, about 19 Cidneys were registered per state.
Cidney + Last Name Combinations
How many people share a full name with Cidney as the first name? Click a combination below to see the estimate, or search any pairing.
Names Similar to Cidney
Other first names starting with C with a similar number of bearers.
Cidney: Questions and Answers
How many people in the U.S. are named Cidney?
We estimate approximately 866 people named Cidney 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 395,790 Americans share this first name.
Is Cidney a common name?
Cidney is classified as "Very Rare" and is more popular than 89.2% of all first names in the SSA database. A total of 892 births have been registered with this name since 1880.
When was Cidney most popular?
Cidney reached peak popularity in 1999, when 58 babies were given this name. The average age of a living person named Cidney is approximately 27 years old, reflecting when the name was most commonly given.
Is Cidney a female name?
Cidney is predominantly female. 98.1% of people with this name are female. See the gender breakdown above for full details.
How many Cidney Smiths are there?
To find how many people share a specific full name, we combine first name and surname frequencies. Try: Cidney Smith, Cidney Johnson, Cidney 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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