First NameCASTOR

Key Findings

• Popularity: Castor is the 17,111th most popular first name in the U.S., placing it among the top 93.7% all first names.
• Population: An estimated 358 Americans bear the name Castor. Based strictly on 100 years of Social Security Administration (SSA) baby name records, the living population with this name is roughly 157.
• Frequency: Approximately 0 out of every 100,000 Americans are named Castor.
• Usage: It is almost exclusively used as a boy's name (100% of the time).