How Many People Are Named Uilliam?
people named Uilliam are alive in the United States today (estimate)
About 1 in 6,572,785 people in the US has this name
Based on 52 babies named Uilliam in Social Security records from 2013 to 2024, and the share of each birth year still alive in 2025.
Popularity Rank
💎💎 Very Rare
Population Percentage
Of US population
Peak Year
11 births
Trend
Stable (last 10 years)
📖 Name Origin & Meaning
Meaning:
Irish form of WILLIAM.
Source of the meaning, origin, pronunciation and related names: Behind the Name.
⚧ Gender Distribution
All of the babies given the name Uilliam in the records were boys.
👥 Age Distribution
The average person named Uilliam alive today is about 6 years old, and 100% are under 30.
📈 Popularity Over Time
Uilliam first appears in the records in 2013 and was given most often in 2018, to 11 babies. The last year it was given to at least 5 babies of one sex was 2024.
Babies given the name each year, 2013 to 2024
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