How Many People Are Named Rennie?
An estimated 1,157 people in the United States have the first name Rennie. It is used for both genders, with 51.9% male. The average bearer is 57 years old, and Rennie peaked in popularity in 1956 with 49 births that year.
Below you will find a full statistical profile of Rennie 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 Rennie paired with any surname.
Key Insights
- Rennie is a genuinely unisex name, given to both boys and girls in roughly equal numbers.
Estimated Living Americans
1,157
About 1 in 296,244 people in the U.S.
Rarity
Rare
Predicted Gender
Male
51.9% confidence
Average Age
57
years old
Peak Year
1956
49 births
Total Registered
1,926
since 1880
Gender Distribution for Rennie
Rennie is a genuinely unisex name, used for both males (51.9%) and females (48.1%). Out of 1,926 total births registered, 999 were male and 927 were female.
Rennie as a male name
Ranked #13,650 in 2021
5 male births in 2021
Peak: 1948 (32 births)
Rennie as a female name
Ranked #14,862 in 2024
6 female births in 2024
Peak: 1922 (20 births)
Rennie: Popularity Over Time
SSA records for Rennie span from the 1880s to the 2020s, covering 15 decades of naming data. The most popular decade for this name was the 1950s, when 337 babies were registered. Rennie has declined significantly from its peak in the 1950s. Recent registrations are a fraction of what they were at the name's height.
Rennie by Decade
How has Rennie 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.
Rennie by State
Rennie + Last Name Combinations
How many people share a full name with Rennie as the first name? Click a combination below to see the estimate, or search any pairing.
Names Similar to Rennie
Other first names starting with R with a similar number of bearers.
Rennie: Questions and Answers
How many people in the U.S. are named Rennie?
We estimate approximately 1,157 people named Rennie 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 296,244 Americans share this first name.
Is Rennie a common name?
Rennie is classified as "Rare" and is more popular than 91% of all first names in the SSA database. A total of 1,926 births have been registered with this name since 1880.
When was Rennie most popular?
Rennie reached peak popularity in 1956, when 49 babies were given this name. The average age of a living person named Rennie is approximately 57 years old, reflecting when the name was most commonly given.
Is Rennie a male name?
Rennie is predominantly male. 51.9% of people with this name are male. See the gender breakdown above for full details.
How many Rennie Smiths are there?
To find how many people share a specific full name, we combine first name and surname frequencies. Try: Rennie Smith, Rennie Johnson, Rennie 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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