How Many People Are Named Trillian?
people named Trillian are alive in the United States today (estimate)
About 1 in 8,137,734 people in the US has this name
Based on 42 babies named Trillian in Social Security records from 2007 to 2015, 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)
⚧ Gender Distribution
Of the babies given the name Trillian, 88.1% were girls and 11.9% were boys.
👥 Age Distribution
The average person named Trillian alive today is about 15 years old, and 100% are under 30.
📈 Popularity Over Time
Trillian first appears in the records in 2007 and was given most often in 2015, to 11 babies. The last year it was given to at least 5 babies of one sex was 2015.
Babies given the name each year, 2007 to 2015
Look up another name
⊙ We don't save the names you search.