Sebastian Janikowski
There are approximately 1 people named Sebastian Janikowski 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 Sebastian with Census Bureau frequency data for the surname Janikowski. 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 Sebastian
204K
Alive today
Named Janikowski
583
Alive today
US population
343M
Denominator
Estimated living: 204K
Rarity: Common
Gender: Male
Peak year: 2016
Average age: 15
Estimated bearers: 583
Rarity: Very Rare
Census rank: #43,206
Per 100K: 0.17
Top ancestry: White (98.0%)
First name trend
Sebastian: popularity over time
Year-by-year SSA birth registrations for the first name Sebastian. The peak year was 2016 with 10,324 births. The average person named Sebastian today is 15 years old.
Babies born per year
Ethnicity
Ancestry of the Janikowski surname
Self-reported race and ethnicity breakdown for people with the surname Janikowski, from the 2010 US Census Bureau. The largest group is White at 98.0%.
- White98.0%
- Hispanic or Latino1.2%
- Unknown or suppressed0.8%
Methodology
How we calculated this
The first name Sebastian has a living-bearer frequency of 0.0596% of the US population, based on 204,231 estimated living Americans carrying this first name (from SSA birth records going back to 1880, adjusted for mortality using CDC life tables).
The surname Janikowski appears at a rate of 0.17 per 100,000 residents in the 2010 Census Bureau surname file, which translates to a frequency of 0.0002%.
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 Sebastian Janikowski. This assumes statistical independence between first and last names, which is a simplification but produces reasonable estimates for most combinations.
FAQ
Sebastian Janikowski: questions and answers
How many people are named Sebastian Janikowski?
We estimate approximately 1 people in the United States share the full name Sebastian Janikowski. That works out to about 1 in 342,754,338 Americans. This is calculated by combining the first-name frequency (0.0596%) with the surname frequency (0.17 per 100K) against the current US population.
How rare is the name Sebastian Janikowski?
We classify Sebastian Janikowski as "Very Rare". About 1 in 342,754,338 Americans share this exact first and last name combination.
Is Sebastian a male or female name?
Sebastian is predominantly male. Out of 209,783 total SSA registrations, 99.8% were male and 0.2% were female. See the full Sebastian 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.