How Many People Are Named Cosie?
An estimated 0 people in the United States have the first name Cosie. It is almost exclusively a female name. The average bearer is 0 years old, and Cosie peaked in popularity in 1915 with 5 births that year.
Below you will find a full statistical profile of Cosie 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 Cosie paired with any surname.
Key Insights
- Cosie is exceptionally rare. Fewer than 100 people with this name are estimated to be alive in the U.S. today.
Estimated Living Americans
0
About 1 in 1 people in the U.S.
Rarity
Very Rare
Predicted Gender
Female
100.0% confidence
Average Age
0
years old
Peak Year
1915
5 births
Total Registered
5
since 1880
Gender Distribution for Cosie
Cosie is almost exclusively a female name. Out of 5 total births registered, 100.0% were female.
Cosie as a female name
Ranked #4,427 in 1915
5 female births in 1915
Peak: 1915 (5 births)
Cosie: Popularity Over Time
Cosie by Decade
How has Cosie 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.
| Decade | Total | Male | Female | |
|---|---|---|---|---|
| 1910s | 5 | 0 | 5 | |
Cosie + Last Name Combinations
How many people share a full name with Cosie as the first name? Click a combination below to see the estimate, or search any pairing.
Names Similar to Cosie
Other first names starting with C with a similar number of bearers.
Cosie: Questions and Answers
How many people in the U.S. are named Cosie?
We estimate approximately 0 people named Cosie 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 Americans share this first name.
Is Cosie a common name?
Cosie is classified as "Very Rare" and is more popular than 2.9% of all first names in the SSA database. A total of 5 births have been registered with this name since 1880.
When was Cosie most popular?
Cosie reached peak popularity in 1915, when 5 babies were given this name. The average age of a living person named Cosie is approximately 0 years old, reflecting when the name was most commonly given.
Is Cosie a female name?
Cosie is predominantly female. 100.0% of people with this name are female. See the gender breakdown above for full details.
How many Cosie Smiths are there?
To find how many people share a specific full name, we combine first name and surname frequencies. Try: Cosie Smith, Cosie Johnson, Cosie 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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