Jill Stjohn
There are approximately 9 people named Jill Stjohn living in the United States today. That makes this name combination very rare, occurring at a rate of about 1 in 38,083,815 Americans.
This estimate combines SSA birth records for the first name Jill with Census Bureau frequency data for the surname Stjohn. Below you will find a breakdown of both names, including popularity trends, gender data, and ancestry information.
Expected bearers
9
1 in 38,083,815
Named Jill
170K
Alive today
Named Stjohn
18K
Alive today
US population
343M
Denominator
Estimated living: 170K
Rarity: Common
Gender: Female
Peak year: 1966
Average age: 57
Estimated bearers: 18K
Rarity: Uncommon
Census rank: #2,303
Per 100K: 5.37
Top ancestry: White (86.4%)
First name trend
Jill: popularity over time
Year-by-year SSA birth registrations for the first name Jill. The peak year was 1966 with 7,885 births. The average person named Jill today is 57 years old.
Babies born per year
Ethnicity
Ancestry of the Stjohn surname
Self-reported race and ethnicity breakdown for people with the surname Stjohn, from the 2010 US Census Bureau. The largest group is White at 86.4%.
- White86.4%
- Black or African American5.7%
- Hispanic or Latino3.3%
- American Indian and Alaska Native2.3%
- Two or more races1.7%
- Asian and Pacific Islander0.7%
Methodology
How we calculated this
The first name Jill has a living-bearer frequency of 0.0497% of the US population, based on 170,298 estimated living Americans carrying this first name (from SSA birth records going back to 1880, adjusted for mortality using CDC life tables).
The surname Stjohn appears at a rate of 5.37 per 100,000 residents in the 2010 Census Bureau surname file, which translates to a frequency of 0.0054%.
Multiplying these two independent frequencies against the current US population of 342,754,338 gives an expected count of approximately 9 people with the full name Jill Stjohn. This assumes statistical independence between first and last names, which is a simplification but produces reasonable estimates for most combinations.
Related
Other people named Jill
FAQ
Jill Stjohn: questions and answers
How many people are named Jill Stjohn?
We estimate approximately 9 people in the United States share the full name Jill Stjohn. That works out to about 1 in 38,083,815 Americans. This is calculated by combining the first-name frequency (0.0497%) with the surname frequency (5.37 per 100K) against the current US population.
How rare is the name Jill Stjohn?
We classify Jill Stjohn as "Very Rare". About 1 in 38,083,815 Americans share this exact first and last name combination.
Is Jill a male or female name?
Jill is predominantly female. Out of 208,553 total SSA registrations, 0.2% were male and 99.8% were female. See the full Jill 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.