How Many People Are Named Willian?
An estimated 2,217 people in the United States have the first name Willian. It is almost exclusively a male name. The average bearer is 51 years old, and Willian peaked in popularity in 1929 with 84 births that year.
Below you will find a full statistical profile of Willian 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 Willian paired with any surname.
Estimated Living Americans
2,217
About 1 in 154,603 people in the U.S.
Rarity
Rare
Predicted Gender
Male
99.6% confidence
Average Age
51
years old
Peak Year
1929
84 births
Total Registered
4,072
since 1880
Gender Distribution for Willian
Willian is almost exclusively a male name. Out of 4,072 total births registered, 99.6% were male.
Willian as a male name
Ranked #5,859 in 2024
16 male births in 2024
Peak: 1929 (84 births)
Willian as a female name
Ranked #10,230 in 1974
5 female births in 1974
Peak: 1925 (8 births)
Willian: Popularity Over Time
SSA records for Willian span from the 1880s to the 2020s, covering 15 decades of naming data. The most popular decade for this name was the 1920s, when 610 babies were registered. Willian has declined significantly from its peak in the 1920s. Recent registrations are a fraction of what they were at the name's height.
Willian by Decade
How has Willian 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.
Willian by State
Birth registrations for Willian span all 16 states and territories in the SSA database. The highest counts are in California, New York, Pennsylvania. The lowest are in Kentucky, New Jersey, Virginia. On average, about 37 Willians were registered per state.
Willian + Last Name Combinations
How many people share a full name with Willian as the first name? Click a combination below to see the estimate, or search any pairing.
Names Similar to Willian
Other first names starting with W with a similar number of bearers.
Willian: Questions and Answers
How many people in the U.S. are named Willian?
We estimate approximately 2,217 people named Willian 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 154,603 Americans share this first name.
Is Willian a common name?
Willian is classified as "Rare" and is more popular than 94.1% of all first names in the SSA database. A total of 4,072 births have been registered with this name since 1880.
When was Willian most popular?
Willian reached peak popularity in 1929, when 84 babies were given this name. The average age of a living person named Willian is approximately 51 years old, reflecting when the name was most commonly given.
Is Willian a male name?
Willian is predominantly male. 99.6% of people with this name are male. See the gender breakdown above for full details.
How many Willian Smiths are there?
To find how many people share a specific full name, we combine first name and surname frequencies. Try: Willian Smith, Willian Johnson, Willian 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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