How Many People Are Named Secilia?
An estimated 342 people in the United States have the first name Secilia. It is almost exclusively a female name. The average bearer is 22 years old, and Secilia peaked in popularity in 1996 with 18 births that year.
Below you will find a full statistical profile of Secilia 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 Secilia paired with any surname.
Estimated Living Americans
342
About 1 in 1,002,206 people in the U.S.
Rarity
Very Rare
Predicted Gender
Female
100.0% confidence
Average Age
22
years old
Peak Year
1996
18 births
Total Registered
350
since 1880
Gender Distribution for Secilia
Secilia is almost exclusively a female name. Out of 350 total births registered, 100.0% were female.
Secilia as a female name
Ranked #13,198 in 2024
7 female births in 2024
Peak: 1996 (18 births)
Secilia: Popularity Over Time
SSA records for Secilia span from the 1970s to the 2020s, covering 6 decades of naming data. The most popular decade for this name was the 2000s, when 115 babies were registered. Secilia has declined significantly from its peak in the 2000s. Recent registrations are a fraction of what they were at the name's height.
Secilia by Decade
How has Secilia 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.
Secilia by State
Secilia + Last Name Combinations
How many people share a full name with Secilia as the first name? Click a combination below to see the estimate, or search any pairing.
Names Similar to Secilia
Other first names starting with S with a similar number of bearers.
Secilia: Questions and Answers
How many people in the U.S. are named Secilia?
We estimate approximately 342 people named Secilia 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 1,002,206 Americans share this first name.
Is Secilia a common name?
Secilia is classified as "Very Rare" and is more popular than 80.6% of all first names in the SSA database. A total of 350 births have been registered with this name since 1880.
When was Secilia most popular?
Secilia reached peak popularity in 1996, when 18 babies were given this name. The average age of a living person named Secilia is approximately 22 years old, reflecting when the name was most commonly given.
Is Secilia a female name?
Secilia is predominantly female. 100.0% of people with this name are female. See the gender breakdown above for full details.
How many Secilia Smiths are there?
To find how many people share a specific full name, we combine first name and surname frequencies. Try: Secilia Smith, Secilia Johnson, Secilia 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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