Julia Louis
There are approximately 24 people named Julia Louis living in the United States today. That makes this name combination very rare, occurring at a rate of about 1 in 14,281,431 Americans.
This estimate combines SSA birth records for the first name Julia with Census Bureau frequency data for the surname Louis. Below you will find a breakdown of both names, including popularity trends, gender data, and ancestry information.
Expected bearers
24
1 in 14,281,431
Named Julia
298K
Alive today
Named Louis
28K
Alive today
US population
343M
Denominator
Estimated living: 298K
Rarity: Common
Gender: Female
Peak year: 2001
Average age: 37
Estimated bearers: 28K
Rarity: Uncommon
Census rank: #1,510
Per 100K: 8.05
Top ancestry: Black (65.5%)
First name trend
Julia: popularity over time
Year-by-year SSA birth registrations for the first name Julia. The peak year was 2001 with 8,849 births. The average person named Julia today is 37 years old.
Babies born per year
Ethnicity
Ancestry of the Louis surname
Self-reported race and ethnicity breakdown for people with the surname Louis, from the 2010 US Census Bureau. The largest group is Black at 65.5%.
- Black or African American65.5%
- White23.4%
- Hispanic or Latino4.1%
- Two or more races3.0%
- Asian and Pacific Islander2.7%
- American Indian and Alaska Native1.2%
Methodology
How we calculated this
The first name Julia has a living-bearer frequency of 0.0869% of the US population, based on 298,017 estimated living Americans carrying this first name (from SSA birth records going back to 1880, adjusted for mortality using CDC life tables).
The surname Louis appears at a rate of 8.05 per 100,000 residents in the 2010 Census Bureau surname file, which translates to a frequency of 0.0080%.
Multiplying these two independent frequencies against the current US population of 342,754,338 gives an expected count of approximately 24 people with the full name Julia Louis. This assumes statistical independence between first and last names, which is a simplification but produces reasonable estimates for most combinations.
Related
Other people named Julia
FAQ
Julia Louis: questions and answers
How many people are named Julia Louis?
We estimate approximately 24 people in the United States share the full name Julia Louis. That works out to about 1 in 14,281,431 Americans. This is calculated by combining the first-name frequency (0.0869%) with the surname frequency (8.05 per 100K) against the current US population.
How rare is the name Julia Louis?
We classify Julia Louis as "Very Rare". About 1 in 14,281,431 Americans share this exact first and last name combination.
Is Julia a male or female name?
Julia is predominantly female. Out of 475,798 total SSA registrations, 0.4% were male and 99.6% were female. See the full Julia 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.