Illiam
boy nameIlliam entered the US charts in 1975, peaked at #4509 in 1981, is rarely given today — a rare gem few children share.
Popularity 1975–2025
—
rank today
#4509
peak (1981)
0
babies in 2025
rare
a rare gem few children share
Rank by decade
| Decade | Average rank |
|---|---|
| 1970s | #5464 |
| 1980s | #5942 |
Living bearers
Fewer than a hundred people named Illiam are estimated to be alive in the US today — a true one-of-a-kind name.
The typical Illiam alive today was born around 1985, making them about 40 years old.
Estimated from official SSA birth records and life tables.
Names similar in popularity
Frequently asked questions
- How popular is the name Illiam in 2025?
- Illiam is rarely given in the US today — it does not rank in the top 2000 boy names.
- When was the name Illiam most popular?
- Illiam peaked in 1981, reaching #4509 among US boy names.
- Will my child share the name Illiam with classmates?
- Illiam will almost certainly be the only one in school.
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