How Many People Are Named Castor?
Complete statistics for the name Castor: rarity score, gender breakdown, age distribution, historical popularity, worldwide data, meaning and origin.
Castor comes from Greek mythology, where it's the name of one of the twin sons of Zeus, also linked to the bright star in the Gemini constellation. Only about 362 people in the US carry this name today, meaning roughly 1 in 911,054 Americans are called Castor. It's a genuinely modern pick, peaking in 2016 with 29 births and showing a rising trend.
📖 Meaning & Origin
Life-path number 22 is known as the Master Builder. It's associated with visionary thinking, large-scale ambition, and the rare ability to turn grand dreams into tangible reality.
🌍 Worldwide Usage
⚥ Gender Distribution
📊 Births by Age Group
Avg Cohort Age: 13All 366 recorded US births for this name, grouped by the age those individuals would be today. Not adjusted for survival, so the number living today is lower (see the living estimate above).
📈 Popularity Over Time
Peak: 2016Annual US births from SSA records · Trend: Rising
🏆 Name Scorecard
Scores 0–100 based on statistical analysis of US and worldwide name frequency
📜 Castor Through the Generations
Castor is a name that's essentially brand new on the American landscape. With just 366 total births recorded in the US, every single one of those individuals is under 30 years old, giving the name an average bearer age of only 13. That means there aren't any Castors in the 30-60 or over-60 age brackets at all, which is pretty remarkable. This isn't a revival or a comeback story, it's a name that simply didn't exist in US naming data until very recently. The peak came in 2016, when 29 babies received the name, and the overall trend is clearly rising. Parents seem drawn to its mythological weight and celestial connection without it feeling overused. Globally, the name ranks #50,927 with around 13,127 living bearers worldwide, and it's most commonly found outside the US in Tanzania. With 100% of American bearers belonging to the youngest generation, Castor feels like a name that's just getting started.
📍 State Distribution (Top 10)
🌿 Related Names by Origin
Other names sharing Castor's Greek roots
📄 About the Name Castor
How Many People Have the Name Castor?
Based on Social Security Administration birth records and age-adjusted survival modeling, approximately 5,822 people in the United States currently share the name Castor. That works out to roughly 1 in every 56,930 Americans, placing it in the Rare category.
Is Castor a Common or Rare Name?
Castor is classified as Rare. The rarity scale runs from Very Common (shared by millions) through Common, Uncommon, Rare, and Very Rare. Understanding where a name sits helps parents gauge uniqueness, genealogists narrow down records, and individuals settle debates about their own name's distinctiveness.
What Does the Name Castor Mean?
Castor means "To shine or to excel" and comes from Greek origins. The name carries a life-path numerology number of 22.
Gender Breakdown
Of all recorded bearers of Castor in SSA data, approximately 100% are male and 0% are female.
When Was Castor Most Popular?
The name Castor reached peak popularity in 2016, with 29 babies registered that year. Current trend: Rising.
How Is This Data Calculated?
All figures are statistical estimates, not exact government headcounts. The underlying data comes from the SSA National Baby Names dataset. Full methodology is explained on the methodology page.
❓ Frequently Asked Questions
How many people are named Castor?
Approximately 5,822 people named Castor live in the United States today. All-time US births on record total 5,822. That works out to roughly 1 in 56,930 Americans.
Is Castor a rare name?
Castor is classified as Rare in the United States. Approximately 1 in every 56,930 Americans has this name.
What does the name Castor mean?
Castor means "To shine or to excel" and comes from Greek origins.
Is Castor more male or female?
Based on SSA records, 100% of people named Castor are male and 0% are female.
When was Castor most popular?
Castor peaked in 2016 with 29 births that year. Current trend: Rising.
How accurate are these statistics?
All figures are statistical estimates based on SSA birth records and age-adjusted modeling. See the methodology page for full details.