How Many People Are Named Cy?
An estimated 3,483 people in the United States have the first name Cy. It is predominantly male (99.4%). The average bearer is 29 years old, and Cy peaked in popularity in 2010 with 117 births that year.
Below you will find a full statistical profile of Cy 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 Cy paired with any surname.
Estimated Living Americans
3,483
About 1 in 98,408 people in the U.S.
Rarity
Rare
Predicted Gender
Male
99.4% confidence
Average Age
29
years old
Peak Year
2010
117 births
Total Registered
3,869
since 1880
Gender Distribution for Cy
Cy is almost exclusively a male name. Out of 3,869 total births registered, 99.4% were male.
Cy as a male name
Ranked #2,339 in 2024
60 male births in 2024
Peak: 2010 (117 births)
Cy as a female name
Ranked #12,417 in 2023
7 female births in 2023
Peak: 2023 (7 births)
Cy: Popularity Over Time
SSA records for Cy span from the 1900s to the 2020s, covering 13 decades of naming data. The most popular decade for this name was the 2000s, when 897 babies were registered. While Cy is less common than at its peak in the 2000s, it remains a well-established name with steady registrations.
Cy by Decade
How has Cy 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.
Cy by State
Birth registrations for Cy span all 20 states and territories in the SSA database. The highest counts are in California, Texas, New York. The lowest are in Tennessee, Oregon, North Carolina. On average, about 47 Cys were registered per state.
Cy + Last Name Combinations
How many people share a full name with Cy as the first name? Click a combination below to see the estimate, or search any pairing.
Names Similar to Cy
Other first names starting with C with a similar number of bearers.
Cy: Questions and Answers
How many people in the U.S. are named Cy?
We estimate approximately 3,483 people named Cy 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 98,408 Americans share this first name.
Is Cy a common name?
Cy is classified as "Rare" and is more popular than 95.6% of all first names in the SSA database. A total of 3,869 births have been registered with this name since 1880.
When was Cy most popular?
Cy reached peak popularity in 2010, when 117 babies were given this name. The average age of a living person named Cy is approximately 29 years old, reflecting when the name was most commonly given.
Is Cy a male name?
Cy is predominantly male. 99.4% of people with this name are male. See the gender breakdown above for full details.
How many Cy Smiths are there?
To find how many people share a specific full name, we combine first name and surname frequencies. Try: Cy Smith, Cy Johnson, Cy 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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