Jennifer Tilly
There are approximately 6 people named Jennifer Tilly living in the United States today. That makes this name combination very rare, occurring at a rate of about 1 in 57,125,723 Americans.
This estimate combines SSA birth records for the first name Jennifer with Census Bureau frequency data for the surname Tilly. Below you will find a breakdown of both names, including popularity trends, gender data, and ancestry information.
Expected bearers
6
1 in 57,125,723
Named Jennifer
1.3M
Alive today
Named Tilly
1.5K
Alive today
US population
343M
Denominator
Estimated living: 1.3M
Rarity: Very Common
Gender: Female
Peak year: 1972
Average age: 46
Estimated bearers: 1.5K
Rarity: Rare
Census rank: #20,239
Per 100K: 0.45
Top ancestry: White (88.0%)
First name trend
Jennifer: popularity over time
Year-by-year SSA birth registrations for the first name Jennifer. The peak year was 1972 with 63,792 births. The average person named Jennifer today is 46 years old.
Babies born per year
Ethnicity
Ancestry of the Tilly surname
Self-reported race and ethnicity breakdown for people with the surname Tilly, from the 2010 US Census Bureau. The largest group is White at 88.0%.
- White88.0%
- Black or African American5.9%
- Hispanic or Latino2.7%
- Two or more races1.4%
- Asian and Pacific Islander1.2%
- American Indian and Alaska Native0.8%
Methodology
How we calculated this
The first name Jennifer has a living-bearer frequency of 0.3912% of the US population, based on 1,340,714 estimated living Americans carrying this first name (from SSA birth records going back to 1880, adjusted for mortality using CDC life tables).
The surname Tilly appears at a rate of 0.45 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 6 people with the full name Jennifer Tilly. This assumes statistical independence between first and last names, which is a simplification but produces reasonable estimates for most combinations.
Related
Other people named Jennifer
Related
Other people with the surname Tilly
FAQ
Jennifer Tilly: questions and answers
How many people are named Jennifer Tilly?
We estimate approximately 6 people in the United States share the full name Jennifer Tilly. That works out to about 1 in 57,125,723 Americans. This is calculated by combining the first-name frequency (0.3912%) with the surname frequency (0.45 per 100K) against the current US population.
How rare is the name Jennifer Tilly?
We classify Jennifer Tilly as "Very Rare". About 1 in 57,125,723 Americans share this exact first and last name combination.
Is Jennifer a male or female name?
Jennifer is predominantly female. Out of 1,476,028 total SSA registrations, 0.3% were male and 99.7% were female. See the full Jennifer 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.