Cynthia Rothrock
There are approximately 6 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 57,125,723 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 ancestry information.
Expected bearers
6
1 in 57,125,723
Named Cynthia
543K
Alive today
Named Rothrock
3.7K
Alive today
US population
343M
Denominator
Estimated living: 543K
Rarity: Very Common
Gender: Female
Peak year: 1957
Average age: 60
Estimated bearers: 3.7K
Rarity: Rare
Census rank: #10,172
Per 100K: 1.08
Top ancestry: White (95.0%)
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
Ethnicity
Ancestry of the Rothrock surname
Self-reported race and ethnicity breakdown for people with the surname Rothrock, from the 2010 US Census Bureau. The largest group is White at 95.0%.
- White95.0%
- Hispanic or Latino2.3%
- Two or more races1.1%
- Asian and Pacific Islander0.8%
- Black or African American0.4%
- American Indian and Alaska Native0.3%
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).
The surname Rothrock appears at a rate of 1.08 per 100,000 residents in the 2010 Census Bureau surname file, which translates to a frequency of 0.0011%.
Multiplying these two independent frequencies against the current US population of 342,754,338 gives an expected count of approximately 6 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
FAQ
Cynthia Rothrock: questions and answers
How many people are named Cynthia Rothrock?
We estimate approximately 6 people in the United States share the full name Cynthia Rothrock. That works out to about 1 in 57,125,723 Americans. This is calculated by combining the first-name frequency (0.1584%) with the surname frequency (1.08 per 100K) against the current US population.
How rare is the name Cynthia Rothrock?
We classify Cynthia Rothrock as "Very Rare". About 1 in 57,125,723 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 2010 US Census Bureau decennial surname tables. Living-bearer estimates use CDC actuarial life tables to adjust for mortality. Read the full methodology.