How Many People Are Named Glennon?
An estimated 578 people in the United States have the first name Glennon. It is almost exclusively a male name. The average bearer is 68 years old, and Glennon peaked in popularity in 1957 with 33 births that year.
Below you will find a full statistical profile of Glennon as a first name in the United States, including gender data, a year-by-year popularity timeline going back to 1880, a decade breakdown, and state-by-state birth registrations. You can also check how many people share the full name Glennon paired with any surname.
Key Insights
- With an average bearer age of 68, Glennon is a vintage name most associated with earlier generations. Most living bearers were born before 1968.
Estimated Living Americans
578
About 1 in 593,001 people in the U.S.
Rarity
Very Rare
Predicted Gender
Male
100.0% confidence
Average Age
68
years old
Peak Year
1957
33 births
Total Registered
1,244
since 1880
Gender Distribution for Glennon
Glennon is almost exclusively a male name. Out of 1,244 total births registered, 100.0% were male.
Glennon as a male name
Ranked #8,156 in 1995
6 male births in 1995
Peak: 1957 (33 births)
Glennon: Popularity Over Time
SSA records for Glennon span from the 1910s to the 1990s, covering 9 decades of naming data. The most popular decade for this name was the 1920s, when 243 babies were registered. Glennon has declined significantly from its peak in the 1920s. Recent registrations are a fraction of what they were at the name's height.
Glennon by Decade
How has Glennon tracked across different eras? The table below groups all SSA birth registrations into 10-year periods, with separate male and female counts. The colored bar shows each decade's share relative to the peak.
Glennon + Last Name Combinations
How many people share a full name with Glennon as the first name? Click a combination below to see the estimate, or search any pairing.
Names Similar to Glennon
Other first names starting with G with a similar number of bearers.
Glennon: Questions and Answers
How many people in the U.S. are named Glennon?
We estimate approximately 578 people named Glennon are alive in the United States today. This is based on SSA birth records from 1880 to 2024, adjusted for mortality using CDC life tables. About 1 in 593,001 Americans share this first name.
Is Glennon a common name?
Glennon is classified as "Very Rare" and is more popular than 85.9% of all first names in the SSA database. A total of 1,244 births have been registered with this name since 1880.
When was Glennon most popular?
Glennon reached peak popularity in 1957, when 33 babies were given this name. The average age of a living person named Glennon is approximately 68 years old, reflecting when the name was most commonly given.
Is Glennon a male name?
Glennon is predominantly male. 100.0% of people with this name are male. See the gender breakdown above for full details.
How many Glennon Smiths are there?
To find how many people share a specific full name, we combine first name and surname frequencies. Try: Glennon Smith, Glennon Johnson, Glennon Williams. You can also search any combination on our homepage.
Where does this data come from?
Our estimates use Social Security Administration birth records (1880 to 2024), adjusted for survival using CDC 2023 life tables broken down by sex. The U.S. population figure (342,754,338) is from the Census Bureau's July 2025 estimate. Full methodology.
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