Mollie Williams
There are approximately 116 people named Mollie Williams living in the United States today. That makes this name combination very rare, occurring at a rate of about 1 in 2,954,779 Americans.
This estimate combines SSA birth records for the first name Mollie with Census Bureau frequency data for the surname Williams. Below you will find a breakdown of both names, including popularity trends, gender data, and Census demographics where available.
Expected bearers
116
1 in 2,954,779
Named Mollie
22K
Alive today
Named Williams
1.8M
Alive today
US population
343M
Denominator
Estimated living: 22K
Rarity: Uncommon
Gender: Female
Peak year: 1915
Average age: 37
Top Census group: White (87.4%)
Estimated bearers: 1.8M
Rarity: Very Common
Census rank: #3
Per 100K: 522.38
Top ancestry: Black (46.2%)
First name trend
Mollie: popularity over time
Year-by-year SSA birth registrations for the first name Mollie. The peak year was 1915 with 738 births. The average person named Mollie today is 37 years old.
Babies born per year
Demographics
Ancestry and ethnicity for Mollie
Self-reported race and ethnicity breakdown for people with the first name Mollie, from the 2020 US Census Bureau first-name tables. The largest published group is White at 87.4%.
The bar chart below shows how people with the first name Mollie described their own race and ethnicity on the 2020 Census form. These are self-reported numbers, and they describe the population who happened to carry the name Mollie at the time of the Census. A first name does not determine a person's race or ethnicity.
- White87.4% · 19,082
- Black or African American5.0% · 1,102
- Hispanic or Latino3.1% · 686
- Two or more races2.7% · 583
- Asian and Pacific Islander1.0% · 229
- American Indian and Alaska Native0.7% · 154
Ethnicity
Ancestry of the Williams surname
Self-reported race and ethnicity breakdown for people with the surname Williams, from the 2020 US Census Bureau. The largest group is Black at 46.2%.
The bar chart below shows how people with the surname Williams described their own race and ethnicity on the 2020 Census form. These are self-reported numbers, and they describe the population who happened to carry the surname Williams at the time of the Census. A surname does not determine a person's race or ethnicity.
- Black or African American46.2% · 721,683
- White43.8% · 684,271
- Two or more races5.1% · 79,393
- Hispanic or Latino3.5% · 54,634
- American Indian and Alaska Native0.8% · 12,205
- Asian and Pacific Islander0.6% · 9,209
Methodology
How we calculated this
The first name Mollie has a living-bearer frequency of 0.0065% of the US population, based on 22,243 estimated living Americans carrying this first name (from SSA birth records going back to 1880, adjusted for mortality using CDC life tables).
Even though the Census Bureau now publishes first-name tables, we do not use that file as the main first-name input for this estimate. The latest first-name Census snapshot is from 2020, which makes it 6 years old today. Because Census first-name data is only released once every 10 years, SSA birth records plus CDC survival rates give a better current estimate of how many people are likely alive with the name Mollie right now.
The surname Williams appears at a rate of 522.38 per 100,000 residents in the 2020 Census Bureau surname file, which translates to a frequency of 0.5224%.
Multiplying these two independent frequencies against the current US population of 342,754,338 gives an expected count of approximately 116 people with the full name Mollie Williams. This assumes statistical independence between first and last names, which is a simplification but produces reasonable estimates for most combinations.
Related
Other people named Mollie
Related
Other people with the surname Williams
FAQ
Mollie Williams: questions and answers
How many people are named Mollie Williams?
We estimate approximately 116 people in the United States share the full name Mollie Williams. That works out to about 1 in 2,954,779 Americans. This is calculated by combining the first-name frequency (0.0065%) with the surname frequency (522.38 per 100K) against the current US population.
How rare is the name Mollie Williams?
We classify Mollie Williams as "Very Rare". About 1 in 2,954,779 Americans share this exact first and last name combination.
Is Mollie a male or female name?
Mollie is predominantly female. Out of 47,996 total SSA registrations, 0.1% were male and 99.9% were female. See the full Mollie 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 2020 US Census Bureau decennial surname tables. Living-bearer estimates use CDC actuarial life tables to adjust for mortality. Read the full methodology.
How common is the name Mollie Williams?
Our sister site HowManyOfMe.org answers how many people are called Mollie Williams at a glance, with the living-bearer count up front.