Kenneth Lonergan
There are approximately 11 people named Kenneth Lonergan living in the United States today. That makes this name combination very rare, occurring at a rate of about 1 in 31,159,485 Americans.
This estimate combines SSA birth records for the first name Kenneth with Census Bureau frequency data for the surname Lonergan. Below you will find a breakdown of both names, including popularity trends, gender data, and ancestry information.
Expected bearers
11
1 in 31,159,485
Named Kenneth
837K
Alive today
Named Lonergan
4.3K
Alive today
US population
343M
Denominator
Estimated living: 837K
Rarity: Very Common
Gender: Male
Peak year: 1957
Average age: 59
Estimated bearers: 4.3K
Rarity: Rare
Census rank: #8,817
Per 100K: 1.26
Top ancestry: White (94.8%)
First name trend
Kenneth: popularity over time
Year-by-year SSA birth registrations for the first name Kenneth. The peak year was 1957 with 28,141 births. The average person named Kenneth today is 59 years old.
Babies born per year
Ethnicity
Ancestry of the Lonergan surname
Self-reported race and ethnicity breakdown for people with the surname Lonergan, from the 2010 US Census Bureau. The largest group is White at 94.8%.
- White94.8%
- Hispanic or Latino2.6%
- Two or more races1.3%
- Asian and Pacific Islander0.6%
- Black or African American0.5%
- American Indian and Alaska Native0.2%
Methodology
How we calculated this
The first name Kenneth has a living-bearer frequency of 0.2442% of the US population, based on 836,956 estimated living Americans carrying this first name (from SSA birth records going back to 1880, adjusted for mortality using CDC life tables).
The surname Lonergan appears at a rate of 1.26 per 100,000 residents in the 2010 Census Bureau surname file, which translates to a frequency of 0.0013%.
Multiplying these two independent frequencies against the current US population of 342,754,338 gives an expected count of approximately 11 people with the full name Kenneth Lonergan. This assumes statistical independence between first and last names, which is a simplification but produces reasonable estimates for most combinations.
Related
Other people named Kenneth
FAQ
Kenneth Lonergan: questions and answers
How many people are named Kenneth Lonergan?
We estimate approximately 11 people in the United States share the full name Kenneth Lonergan. That works out to about 1 in 31,159,485 Americans. This is calculated by combining the first-name frequency (0.2442%) with the surname frequency (1.26 per 100K) against the current US population.
How rare is the name Kenneth Lonergan?
We classify Kenneth Lonergan as "Very Rare". About 1 in 31,159,485 Americans share this exact first and last name combination.
Is Kenneth a male or female name?
Kenneth is predominantly male. Out of 1,288,147 total SSA registrations, 99.6% were male and 0.4% were female. See the full Kenneth 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.