How Many People Are Named Rui?
An estimated 890 people in the United States have the first name Rui. It is predominantly male (91.8%). The average bearer is 22 years old, and Rui peaked in popularity in 2024 with 71 births that year.
Below you will find a full statistical profile of Rui 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 Rui paired with any surname.
Estimated Living Americans
890
About 1 in 385,117 people in the U.S.
Rarity
Very Rare
Predicted Gender
Male
91.8% confidence
Average Age
22
years old
Peak Year
2024
71 births
Total Registered
913
since 1880
Gender Distribution for Rui
Rui is predominantly male (91.8%), though 75 female births have been registered. It functions as a unisex name for a small percentage of bearers.
Rui as a male name
Ranked #2,297 in 2024
62 male births in 2024
Peak: 2024 (62 births)
Rui as a female name
Ranked #10,896 in 2024
9 female births in 2024
Peak: 2022 (12 births)
Rui: Popularity Over Time
SSA records for Rui span from the 1960s to the 2020s, covering 7 decades of naming data. The most popular decade for this name was the 2020s, when 259 babies were registered. Rui remains highly popular today, with recent registration numbers near its historical peak.
Rui by Decade
How has Rui 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.
Rui by State
Birth registrations for Rui span all 7 states and territories in the SSA database. The highest counts are in California, Massachusetts, New Jersey. The lowest are in Connecticut, Texas, Washington. On average, about 27 Ruis were registered per state.
Rui + Last Name Combinations
How many people share a full name with Rui as the first name? Click a combination below to see the estimate, or search any pairing.
Names Similar to Rui
Other first names starting with R with a similar number of bearers.
Rui: Questions and Answers
How many people in the U.S. are named Rui?
We estimate approximately 890 people named Rui 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 385,117 Americans share this first name.
Is Rui a common name?
Rui is classified as "Very Rare" and is more popular than 89.3% of all first names in the SSA database. A total of 913 births have been registered with this name since 1880.
When was Rui most popular?
Rui reached peak popularity in 2024, when 71 babies were given this name. The average age of a living person named Rui is approximately 22 years old, reflecting when the name was most commonly given.
Is Rui a male name?
Rui is predominantly male. 91.8% of people with this name are male. See the gender breakdown above for full details.
How many Rui Smiths are there?
To find how many people share a specific full name, we combine first name and surname frequencies. Try: Rui Smith, Rui Johnson, Rui 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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