Rosa Delauro
There are approximately 1 people named Rosa Delauro living in the United States today. That makes this name combination very rare, occurring at a rate of about 1 in 342,754,338 Americans.
This estimate combines SSA birth records for the first name Rosa with Census Bureau frequency data for the surname Delauro. Below you will find a breakdown of both names, including popularity trends, gender data, and ancestry information.
Expected bearers
1
1 in 342,754,338
Named Rosa
84K
Alive today
Named Delauro
411
Alive today
US population
343M
Denominator
Estimated living: 84K
Rarity: Uncommon
Gender: Female
Peak year: 1925
Average age: 51
Estimated bearers: 411
Rarity: Very Rare
Census rank: #57,101
Per 100K: 0.12
Top ancestry: White (89.6%)
First name trend
Rosa: popularity over time
Year-by-year SSA birth registrations for the first name Rosa. The peak year was 1925 with 2,245 births. The average person named Rosa today is 51 years old.
Babies born per year
Ethnicity
Ancestry of the Delauro surname
Self-reported race and ethnicity breakdown for people with the surname Delauro, from the 2010 US Census Bureau. The largest group is White at 89.6%.
- White89.6%
- Hispanic or Latino8.1%
- Asian and Pacific Islander2.0%
- Unknown or suppressed0.3%
Methodology
How we calculated this
The first name Rosa has a living-bearer frequency of 0.0247% of the US population, based on 84,496 estimated living Americans carrying this first name (from SSA birth records going back to 1880, adjusted for mortality using CDC life tables).
The surname Delauro appears at a rate of 0.12 per 100,000 residents in the 2010 Census Bureau surname file, which translates to a frequency of 0.0001%.
Multiplying these two independent frequencies against the current US population of 342,754,338 gives an expected count of approximately 1 people with the full name Rosa Delauro. This assumes statistical independence between first and last names, which is a simplification but produces reasonable estimates for most combinations.
Related
Other people named Rosa
FAQ
Rosa Delauro: questions and answers
How many people are named Rosa Delauro?
We estimate approximately 1 people in the United States share the full name Rosa Delauro. That works out to about 1 in 342,754,338 Americans. This is calculated by combining the first-name frequency (0.0247%) with the surname frequency (0.12 per 100K) against the current US population.
How rare is the name Rosa Delauro?
We classify Rosa Delauro as "Very Rare". About 1 in 342,754,338 Americans share this exact first and last name combination.
Is Rosa a male or female name?
Rosa is predominantly female. Out of 178,136 total SSA registrations, 0.7% were male and 99.3% were female. See the full Rosa 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.