How Many People Are Named Cynniah?
An estimated 15 people in the United States have the first name Cynniah. It is almost exclusively a female name. The average bearer is 6 years old, and Cynniah peaked in popularity in 2020 with 9 births that year.
Below you will find a full statistical profile of Cynniah 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 Cynniah paired with any surname.
Key Insights
- Cynniah is exceptionally rare. Fewer than 100 people with this name are estimated to be alive in the U.S. today.
Estimated Living Americans
15
About 1 in 22,850,289 people in the U.S.
Rarity
Very Rare
Predicted Gender
Female
100.0% confidence
Average Age
6
years old
Peak Year
2020
9 births
Total Registered
15
since 1880
Gender Distribution for Cynniah
Cynniah is almost exclusively a female name. Out of 15 total births registered, 100.0% were female.
Cynniah as a female name
Ranked #10,451 in 2020
9 female births in 2020
Peak: 2020 (9 births)
Cynniah: Popularity Over Time
SSA records for Cynniah span from the 2010s to the 2020s, covering 2 decades of naming data. The most popular decade for this name was the 2020s, when 9 babies were registered. Cynniah remains highly popular today, with recent registration numbers near its historical peak.
Cynniah by Decade
How has Cynniah 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.
Cynniah + Last Name Combinations
How many people share a full name with Cynniah as the first name? Click a combination below to see the estimate, or search any pairing.
Names Similar to Cynniah
Other first names starting with C with a similar number of bearers.
Cynniah: Questions and Answers
How many people in the U.S. are named Cynniah?
We estimate approximately 15 people named Cynniah 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 22,850,289 Americans share this first name.
Is Cynniah a common name?
Cynniah is classified as "Very Rare" and is more popular than 35.3% of all first names in the SSA database. A total of 15 births have been registered with this name since 1880.
When was Cynniah most popular?
Cynniah reached peak popularity in 2020, when 9 babies were given this name. The average age of a living person named Cynniah is approximately 6 years old, reflecting when the name was most commonly given.
Is Cynniah a female name?
Cynniah is predominantly female. 100.0% of people with this name are female. See the gender breakdown above for full details.
How many Cynniah Smiths are there?
To find how many people share a specific full name, we combine first name and surname frequencies. Try: Cynniah Smith, Cynniah Johnson, Cynniah 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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