How Many People Are Named Theresa Williams?
There are approximately 1,328 people named Theresa Williams living in the United States today. That makes this name combination common, occurring at a rate of about 1 in 258,098 Americans.
This estimate combines SSA birth records for the first name Theresa 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
1,328
1 in 258,098 Americans
Combination Rarity
Common
First Name
View full profileTheresa
Last Name
View full profileWilliams
Theresa: Popularity Over Time
Year-by-year SSA birth registrations for the first name Theresa. The peak year was 1961 with 11,990 births. The average person named Theresa today is 60 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 "Theresa" has an estimated frequency of 0.0703% 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 1,328 estimated people. This assumes first names and last names are statistically independent. Full methodology.
Other people named Theresa
Other people with the surname Williams
Theresa Williams: Questions and Answers
How many people are named Theresa Williams?
We estimate approximately 1,328 people named Theresa Williams are alive in the United States today. The first name Theresa is shared by 241,068 Americans, and the surname Williams is shared by 1,850,671.
How rare is the name Theresa Williams?
This name combination is classified as Common, occurring at a rate of about 1 in 258,098 Americans. The first name Theresa is common and the surname Williams is very common.
Is Theresa a male or female name?
Theresa is predominantly female, with 0.3% of bearers being male and 99.7% female. It peaked in popularity in 1961 and the average bearer today is 60 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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