How Many People Are Named Cythia?
An estimated 340 people in the United States have the first name Cythia. It is almost exclusively a female name. The average bearer is 55 years old, and Cythia peaked in popularity in 1961 with 21 births that year.
Below you will find a full statistical profile of Cythia 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 Cythia paired with any surname.
Estimated Living Americans
340
About 1 in 1,008,101 people in the U.S.
Rarity
Very Rare
Predicted Gender
Female
100.0% confidence
Average Age
55
years old
Peak Year
1961
21 births
Total Registered
401
since 1880
Gender Distribution for Cythia
Cythia is almost exclusively a female name. Out of 401 total births registered, 100.0% were female.
Cythia as a female name
Ranked #12,128 in 1994
6 female births in 1994
Peak: 1961 (21 births)
Cythia: Popularity Over Time
SSA records for Cythia span from the 1950s to the 1990s, covering 5 decades of naming data. The most popular decade for this name was the 1960s, when 129 babies were registered. Cythia has declined significantly from its peak in the 1960s. Recent registrations are a fraction of what they were at the name's height.
Cythia by Decade
How has Cythia 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.
Cythia by State
Cythia + Last Name Combinations
How many people share a full name with Cythia as the first name? Click a combination below to see the estimate, or search any pairing.
Names Similar to Cythia
Other first names starting with C with a similar number of bearers.
Cythia: Questions and Answers
How many people in the U.S. are named Cythia?
We estimate approximately 340 people named Cythia 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 1,008,101 Americans share this first name.
Is Cythia a common name?
Cythia is classified as "Very Rare" and is more popular than 80.6% of all first names in the SSA database. A total of 401 births have been registered with this name since 1880.
When was Cythia most popular?
Cythia reached peak popularity in 1961, when 21 babies were given this name. The average age of a living person named Cythia is approximately 55 years old, reflecting when the name was most commonly given.
Is Cythia a female name?
Cythia is predominantly female. 100.0% of people with this name are female. See the gender breakdown above for full details.
How many Cythia Smiths are there?
To find how many people share a specific full name, we combine first name and surname frequencies. Try: Cythia Smith, Cythia Johnson, Cythia 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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