How Many People Are Named Gustavus?
An estimated 140 people in the United States have the first name Gustavus. It is almost exclusively a male name. The average bearer is 58 years old, and Gustavus peaked in popularity in 1966 with 10 births that year.
Below you will find a full statistical profile of Gustavus 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 Gustavus paired with any surname.
Estimated Living Americans
140
About 1 in 2,448,245 people in the U.S.
Rarity
Very Rare
Predicted Gender
Male
100.0% confidence
Average Age
58
years old
Peak Year
1966
10 births
Total Registered
266
since 1880
Gender Distribution for Gustavus
Gustavus is almost exclusively a male name. Out of 266 total births registered, 100.0% were male.
Gustavus as a male name
Ranked #12,701 in 2006
5 male births in 2006
Peak: 1966 (10 births)
Gustavus: Popularity Over Time
SSA records for Gustavus span from the 1880s to the 2000s, covering 11 decades of naming data. The most popular decade for this name was the 1960s, when 56 babies were registered. Gustavus has declined significantly from its peak in the 1960s. Recent registrations are a fraction of what they were at the name's height.
Gustavus by Decade
How has Gustavus 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.
Gustavus + Last Name Combinations
How many people share a full name with Gustavus as the first name? Click a combination below to see the estimate, or search any pairing.
Names Similar to Gustavus
Other first names starting with G with a similar number of bearers.
Gustavus: Questions and Answers
How many people in the U.S. are named Gustavus?
We estimate approximately 140 people named Gustavus 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 2,448,245 Americans share this first name.
Is Gustavus a common name?
Gustavus is classified as "Very Rare" and is more popular than 69.3% of all first names in the SSA database. A total of 266 births have been registered with this name since 1880.
When was Gustavus most popular?
Gustavus reached peak popularity in 1966, when 10 babies were given this name. The average age of a living person named Gustavus is approximately 58 years old, reflecting when the name was most commonly given.
Is Gustavus a male name?
Gustavus is predominantly male. 100.0% of people with this name are male. See the gender breakdown above for full details.
How many Gustavus Smiths are there?
To find how many people share a specific full name, we combine first name and surname frequencies. Try: Gustavus Smith, Gustavus Johnson, Gustavus 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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