How Many People Are Named Louisa Williams?
There are approximately 65 people named Louisa Williams living in the United States today. That makes this name combination rare, occurring at a rate of about 1 in 5,273,144 Americans.
This estimate combines SSA birth records for the first name Louisa with Census Bureau frequency data for the surname Williams. Below you will find a breakdown of both names, including popularity trends, gender data, and ancestry information.
Estimated People with This Name
65
1 in 5,273,144 Americans
Combination Rarity
Rare
First Name
View full profileLouisa
Last Name
View full profileWilliams
Louisa: Popularity Over Time
Year-by-year SSA birth registrations for the first name Louisa. The peak year was 2021 with 424 births. The average person named Louisa today is 34 years old.
Ancestry of the Williams Surname
Self-reported race and ethnicity breakdown for people with the surname Williams, from the 2010 U.S. Census Bureau.
How we calculated this
The first name "Louisa" has an estimated frequency of < 0.0001% among living Americans, based on SSA birth records from 1880 to 2024 adjusted for mortality using CDC 2023 life tables.
The surname "Williams" appears at a rate of 550.97 per 100,000 people in the 2010 U.S. Census.
Multiplying these frequencies against the U.S. population of ~343 million gives 65 estimated people. This assumes first names and last names are statistically independent. Full methodology.
Other people named Louisa
Other people with the surname Williams
Louisa Williams: Questions and Answers
How many people are named Louisa Williams?
We estimate approximately 65 people named Louisa Williams are alive in the United States today. The first name Louisa is shared by 11,875 Americans, and the surname Williams is shared by 1,850,671.
How rare is the name Louisa Williams?
This name combination is classified as Rare, occurring at a rate of about 1 in 5,273,144 Americans. The first name Louisa is uncommon and the surname Williams is very common.
Is Louisa a male or female name?
Louisa is predominantly female, with 0.0% of bearers being male and 100.0% female. It peaked in popularity in 2021 and the average bearer today is 34 years old.
Where does this data come from?
First name data comes from the Social Security Administration (1880 to 2024), adjusted for survival using CDC 2023 life tables. Surname data comes from the 2010 U.S. Census Bureau. Full methodology.
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