How Many People Are Named Ruby?
An estimated 141,288 people in the United States have the first name Ruby. While not in the top 50, it remains a well-known name ranking #377 overall. It is predominantly female (99.2%). The average bearer is 38 years old, and Ruby peaked in popularity in 1924 with 8,472 births that year.
Below you will find a full statistical profile of Ruby 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 Ruby paired with any surname.
Key Insights
- While Ruby is overwhelmingly female, 3,099 male births have been registered with this name since 1880.
Estimated Living Americans
141,288
About 1 in 2,426 people in the U.S.
Rarity
Common
Predicted Gender
Female
99.2% confidence
Average Age
38
years old
Peak Year
1924
8,472 births
Total Registered
376,074
since 1880
Gender Distribution for Ruby
Ruby is almost exclusively a female name. Out of 376,074 total births registered, 99.2% were female.
Ruby as a male name
Ranked #5,386 in 2024
18 male births in 2024
Peak: 1927 (81 births)
Ruby as a female name
Ranked #63 in 2024
3,517 female births in 2024
Peak: 1924 (8,406 births)
Ruby: Popularity Over Time
SSA records for Ruby span from the 1880s to the 2020s, covering 15 decades of naming data. The most popular decade for this name was the 1920s, when 77,389 babies were registered. Ruby has declined significantly from its peak in the 1920s. Recent registrations are a fraction of what they were at the name's height.
Ruby by Decade
How has Ruby 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.
| Decade | Total | Male | Female | |
|---|---|---|---|---|
| 1880s | 2,645 | 42 | 2,603 | |
| 1890s | 8,819 | 120 | 8,699 | |
| 1900s | 18,353 | 178 | 18,175 | |
| 1910s | 60,812 | 504 | 60,308 | |
| 1920s | 77,389 | 652 | 76,737 | |
| 1930s | 48,170 | 523 | 47,647 | |
| 1940s | 32,141 | 268 | 31,873 | |
| 1950s | 20,702 | 153 | 20,549 | |
| 1960s | 10,278 | 113 | 10,165 | |
| 1970s | 6,519 | 86 | 6,433 | |
| 1980s | 6,451 | 139 | 6,312 | |
| 1990s | 10,693 | 137 | 10,556 | |
| 2000s | 22,084 | 54 | 22,030 | |
| 2010s | 33,517 | 56 | 33,461 | |
| 2020s | 17,501 | 74 | 17,427 | |
Ruby by State
Birth registrations for Ruby span all 51 states and territories in the SSA database. The highest counts are in Texas, California, North Carolina. The lowest are in Delaware, Rhode Island, Alaska. On average, about 6,700 Rubys were registered per state.
Ruby + Last Name Combinations
How many people share a full name with Ruby as the first name? Click a combination below to see the estimate, or search any pairing.
Names Similar to Ruby
Other first names starting with R with a similar number of bearers.
Ruby: Questions and Answers
How many people in the U.S. are named Ruby?
We estimate approximately 141,288 people named Ruby 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 2,426 Americans share this first name.
Is Ruby a common name?
Ruby is classified as "Common" and is more popular than 99.6% of all first names in the SSA database. A total of 376,074 births have been registered with this name since 1880.
When was Ruby most popular?
Ruby reached peak popularity in 1924, when 8,472 babies were given this name. The average age of a living person named Ruby is approximately 38 years old, reflecting when the name was most commonly given.
Is Ruby a female name?
Ruby is predominantly female. 99.2% of people with this name are female. See the gender breakdown above for full details.
How many Ruby Smiths are there?
To find how many people share a specific full name, we combine first name and surname frequencies. Try: Ruby Smith, Ruby Johnson, Ruby 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.
Search for a full name combination
How Many of Me