How Many People Are Named Gilliam?
people named Gilliam are alive in the United States today (estimate)
About 1 in 6,835,697 people in the US has this name
Based on 157 babies named Gilliam in Social Security records from 1914 to 1988, and the share of each birth year still alive in 2025.
Popularity Rank
💎💎 Very Rare
Population Percentage
Of US population
Peak Year
9 births
Trend
Last year given
⚧ Gender Distribution
Of the babies given the name Gilliam, 19.5% were girls and 80.5% were boys.
👥 Age Distribution
The average person named Gilliam alive today is about 62 years old, and 60% are 60 or older.
📈 Popularity Over Time
Gilliam first appears in the records in 1914 and was given most often in 1920, to 9 babies. The last year it was given to at least 5 babies of one sex was 1988.
Babies given the name each year, 1914 to 1988
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