Cynthia Rothrock
There are approximately 5 people named Cynthia Rothrock living in the United States today. That makes this name combination very rare, occurring at a rate of about 1 in 68,550,868 Americans.
This estimate combines SSA birth records for the first name Cynthia with Census Bureau frequency data for the surname Rothrock. Below you will find a breakdown of both names, including popularity trends, gender data, and Census demographics where available.
Expected bearers
5
1 in 68,550,868
Named Cynthia
543K
Alive today
Named Rothrock
3.4K
Alive today
US population
343M
Denominator
Estimated living: 543K
Rarity: Very Common
Gender: Female
Peak year: 1957
Average age: 60
Top Census group: White (69.5%)
Estimated bearers: 3.4K
Rarity: Rare
Census rank: #10,308
Per 100K: 0.99
Top ancestry: White (92.2%)
First name trend
Cynthia: popularity over time
Year-by-year SSA birth registrations for the first name Cynthia. The peak year was 1957 with 39,416 births. The average person named Cynthia today is 60 years old.
Babies born per year
Demographics
Ancestry and ethnicity for Cynthia
Self-reported race and ethnicity breakdown for people with the first name Cynthia, from the 2020 US Census Bureau first-name tables. The largest published group is White at 69.5%.
The bar chart below shows how people with the first name Cynthia 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 Cynthia at the time of the Census. A first name does not determine a person's race or ethnicity.
- White69.5% · 415,350
- Hispanic or Latino14.1% · 84,577
- Black or African American11.4% · 68,037
- Two or more races2.3% · 13,647
- Asian and Pacific Islander2.2% · 12,921
- American Indian and Alaska Native0.5% · 3,245
Ethnicity
Ancestry of the Rothrock surname
Self-reported race and ethnicity breakdown for people with the surname Rothrock, from the 2020 US Census Bureau. The largest group is White at 92.2%.
The bar chart below shows how people with the surname Rothrock 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 Rothrock at the time of the Census. A surname does not determine a person's race or ethnicity.
- White92.2% · 2,743
- Hispanic or Latino3.6% · 106
- Two or more races3.0% · 88
- Asian and Pacific Islander0.8% · 24
- Black or African American0.3% · 9
- American Indian and Alaska Native0.1% · 4
Methodology
How we calculated this
The first name Cynthia has a living-bearer frequency of 0.1584% of the US population, based on 542,980 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 Cynthia right now.
The surname Rothrock appears at a rate of 0.99 per 100,000 residents in the 2020 Census Bureau surname file, which translates to a frequency of 0.0010%.
Multiplying these two independent frequencies against the current US population of 342,754,338 gives an expected count of approximately 5 people with the full name Cynthia Rothrock. This assumes statistical independence between first and last names, which is a simplification but produces reasonable estimates for most combinations.
Related
Other people named Cynthia
Related
Other people with the surname Rothrock
FAQ
Cynthia Rothrock: questions and answers
How many people are named Cynthia Rothrock?
We estimate approximately 5 people in the United States share the full name Cynthia Rothrock. That works out to about 1 in 68,550,868 Americans. This is calculated by combining the first-name frequency (0.1584%) with the surname frequency (0.99 per 100K) against the current US population.
How rare is the name Cynthia Rothrock?
We classify Cynthia Rothrock as "Very Rare". About 1 in 68,550,868 Americans share this exact first and last name combination.
Is Cynthia a male or female name?
Cynthia is predominantly female. Out of 713,161 total SSA registrations, 0.3% were male and 99.7% were female. See the full Cynthia 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 many people have the full name Cynthia Rothrock?
If you just want to know how common the name Cynthia Rothrock is, HowManyOfMe.org gives you the headline number in one glance.