Simon Callow
There are approximately 1 people named Simon Callow living in the United States today. That makes this name combination very rare, occurring at a rate of about 1 in 342,754,338 Americans.
This estimate combines SSA birth records for the first name Simon with Census Bureau frequency data for the surname Callow. Below you will find a breakdown of both names, including popularity trends, gender data, and ancestry information.
Expected bearers
1
1 in 342,754,338
Named Simon
56K
Alive today
Named Callow
1.4K
Alive today
US population
343M
Denominator
Estimated living: 56K
Rarity: Uncommon
Gender: Male
Peak year: 2015
Average age: 26
Estimated bearers: 1.4K
Rarity: Rare
Census rank: #22,026
Per 100K: 0.40
Top ancestry: White (94.7%)
First name trend
Simon: popularity over time
Year-by-year SSA birth registrations for the first name Simon. The peak year was 2015 with 1,653 births. The average person named Simon today is 26 years old.
Babies born per year
Ethnicity
Ancestry of the Callow surname
Self-reported race and ethnicity breakdown for people with the surname Callow, from the 2010 US Census Bureau. The largest group is White at 94.7%.
- White94.7%
- Hispanic or Latino1.9%
- Two or more races1.4%
- Black or African American0.9%
Methodology
How we calculated this
The first name Simon has a living-bearer frequency of 0.0164% of the US population, based on 56,188 estimated living Americans carrying this first name (from SSA birth records going back to 1880, adjusted for mortality using CDC life tables).
The surname Callow appears at a rate of 0.40 per 100,000 residents in the 2010 Census Bureau surname file, which translates to a frequency of 0.0004%.
Multiplying these two independent frequencies against the current US population of 342,754,338 gives an expected count of approximately 1 people with the full name Simon Callow. This assumes statistical independence between first and last names, which is a simplification but produces reasonable estimates for most combinations.
Related
Other people named Simon
FAQ
Simon Callow: questions and answers
How many people are named Simon Callow?
We estimate approximately 1 people in the United States share the full name Simon Callow. That works out to about 1 in 342,754,338 Americans. This is calculated by combining the first-name frequency (0.0164%) with the surname frequency (0.40 per 100K) against the current US population.
How rare is the name Simon Callow?
We classify Simon Callow as "Very Rare". About 1 in 342,754,338 Americans share this exact first and last name combination.
Is Simon a male or female name?
Simon is predominantly male. Out of 68,893 total SSA registrations, 99.8% were male and 0.2% were female. See the full Simon profile for detailed gender data.
Where does this data come from?
First-name data comes from the Social Security Administration's national baby name files (1880 to 2024). Surname data comes from the 2010 US Census Bureau decennial surname tables. Living-bearer estimates use CDC actuarial life tables to adjust for mortality. Read the full methodology.