How popular is the name Si in 2025?

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

When was the name Si most popular?

Si peaked in 1934, reaching #2742 among US boy names.

Si will almost certainly be the only one in school.

boy name

Si entered the US charts in 1927, peaked at #2742 in 1934, is rarely given today — a rare gem few children share.

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rank today

#2742

peak (1934)

babies in 2025

rare

a rare gem few children share

About 100 people named Si are estimated to be alive in the US today.

The typical Si alive today was born around 1998, making them about 27 years old.

Estimated from official SSA birth records and life tables.

How popular is the name Si in 2025?: Si is rarely given in the US today — it does not rank in the top 2000 boy names.
When was the name Si most popular?: Si peaked in 1934, reaching #2742 among US boy names.
Will my child share the name Si with classmates?: Si will almost certainly be the only one in school.

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