How Many People Are Named Sincerity?
An estimated 108 people in the United States have the first name Sincerity. It is almost exclusively a female name. The average bearer is 13 years old, and Sincerity peaked in popularity in 2018 with 9 births that year.
Below you will find a full statistical profile of Sincerity as a first name in the United States, including gender data, a year-by-year popularity timeline going back to 1880, a decade breakdown, state-by-state birth registrations, and, when available, a 2020 Census snapshot showing who had the name at that point in time. You can also check how many people share the full name Sincerity paired with any surname.
Estimated Living Americans
108
About 1 in 3,173,651 people in the U.S.
Rarity
Very Rare
Predicted Gender
Female
100.0% confidence
Average Age
13
years old
Peak Year
2018
9 births
Total Registered
109
since 1880
Gender Distribution for Sincerity
Sincerity is almost exclusively a female name. Out of 109 total births registered, 100.0% were female.
Sincerity as a female name
Ranked #17,292 in 2024
5 female births in 2024
Peak: 2018 (9 births)
Sincerity: Popularity Over Time
SSA records for Sincerity span from the 2000s to the 2020s, covering 3 decades of naming data. The most popular decade for this name was the 2010s, when 48 babies were registered. While Sincerity is less common than at its peak in the 2010s, it remains a well-established name with steady registrations.
Sincerity by Decade
How has Sincerity 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.
Sincerity + Last Name Combinations
How many people share a full name with Sincerity as the first name? Click a combination below to see the estimate, or search any pairing.
Names Similar to Sincerity
Other first names starting with S with a similar number of bearers.
Sincerity: Questions and Answers
How many people in the U.S. are named Sincerity?
We estimate approximately 108 people named Sincerity 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 3,173,651 Americans share this first name.
Is Sincerity a common name?
Sincerity is classified as "Very Rare" and is more popular than 65.7% of all first names in the SSA database. A total of 109 births have been registered with this name since 1880.
When was Sincerity most popular?
Sincerity reached peak popularity in 2018, when 9 babies were given this name. The average age of a living person named Sincerity is approximately 13 years old, reflecting when the name was most commonly given.
What does the SSA popularity chart show?
The popularity chart tracks birth registrations, not people currently alive. It shows how often Sincerity was given to babies from 1880 through 2024, which is why it is the best tool on the page for seeing long-run naming trends.
Is Sincerity a female name?
Sincerity is predominantly female. 100.0% of people with this name are female. See the gender breakdown above for full details.
Why can Sincerity have a lot of living bearers even if it is not trendy now?
Because a name can build up a large population over many decades. Sincerity peaked in 2018, and the average living bearer is about 13 years old, so a name can still have millions of living bearers even after it stops feeling current for newborns.
How many Sincerity Smiths are there?
To find how many people share a specific full name, we combine first name and surname frequencies. Try: Sincerity Smith, Sincerity Johnson, Sincerity 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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