How popular is the name Oneill in 2025?

Oneill is rarely given in the US today — it does not rank in the top 2000 boy names.

When was the name Oneill most popular?

Oneill peaked in 1943, reaching #3538 among US boy names.

Oneill will almost certainly be the only one in school.

boy name

Oneill entered the US charts in 1918, peaked at #3538 in 1943, is rarely given today — a rare gem few children share.

—

rank today

#3538

peak (1943)

babies in 2025

rare

a rare gem few children share

Fewer than a hundred people named Oneill are estimated to be alive in the US today — a true one-of-a-kind name.

The typical Oneill alive today was born around 1988, making them about 37 years old.

Estimated from official SSA birth records and life tables.

How popular is the name Oneill in 2025?: Oneill is rarely given in the US today — it does not rank in the top 2000 boy names.
When was the name Oneill most popular?: Oneill peaked in 1943, reaching #3538 among US boy names.
Will my child share the name Oneill with classmates?: Oneill will almost certainly be the only one in school.

Put them head to head — full stats, history and a verdict.