Erin Moran
There are approximately 91 people named Erin Moran living in the United States today. That makes this name combination very rare, occurring at a rate of about 1 in 3,766,531 Americans.
This estimate combines SSA birth records for the first name Erin with Census Bureau frequency data for the surname Moran. Below you will find a breakdown of both names, including popularity trends, gender data, and ancestry information.
Expected bearers
91
1 in 3,766,531
Named Erin
304K
Alive today
Named Moran
103K
Alive today
US population
343M
Denominator
Estimated living: 304K
Rarity: Common
Gender: Female
Peak year: 1983
Average age: 39
Estimated bearers: 103K
Rarity: Common
Census rank: #353
Per 100K: 30.04
Top ancestry: White (64.1%)
First name trend
Erin: popularity over time
Year-by-year SSA birth registrations for the first name Erin. The peak year was 1983 with 15,051 births. The average person named Erin today is 39 years old.
Babies born per year
Ethnicity
Ancestry of the Moran surname
Self-reported race and ethnicity breakdown for people with the surname Moran, from the 2010 US Census Bureau. The largest group is White at 64.1%.
- White64.1%
- Hispanic or Latino30.8%
- Black or African American2.4%
- Two or more races1.1%
- American Indian and Alaska Native0.8%
- Asian and Pacific Islander0.7%
Methodology
How we calculated this
The first name Erin has a living-bearer frequency of 0.0888% of the US population, based on 304,342 estimated living Americans carrying this first name (from SSA birth records going back to 1880, adjusted for mortality using CDC life tables).
The surname Moran appears at a rate of 30.04 per 100,000 residents in the 2010 Census Bureau surname file, which translates to a frequency of 0.0300%.
Multiplying these two independent frequencies against the current US population of 342,754,338 gives an expected count of approximately 91 people with the full name Erin Moran. This assumes statistical independence between first and last names, which is a simplification but produces reasonable estimates for most combinations.
Related
Other people named Erin
Related
Other people with the surname Moran
FAQ
Erin Moran: questions and answers
How many people are named Erin Moran?
We estimate approximately 91 people in the United States share the full name Erin Moran. That works out to about 1 in 3,766,531 Americans. This is calculated by combining the first-name frequency (0.0888%) with the surname frequency (30.04 per 100K) against the current US population.
How rare is the name Erin Moran?
We classify Erin Moran as "Very Rare". About 1 in 3,766,531 Americans share this exact first and last name combination.
Is Erin a male or female name?
Erin is predominantly female. Out of 325,703 total SSA registrations, 2.9% were male and 97.1% were female. See the full Erin 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.