How Many People Are Named Semaj?
An estimated 9,103 people in the United States have the first name Semaj. It is used for both genders, with 78.1% male. The average bearer is 18 years old, and Semaj peaked in popularity in 2009 with 495 births that year.
Below you will find a full statistical profile of Semaj 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 Semaj paired with any surname.
Key Insights
- Semaj is a modern name. With an average bearer age of just 18, it has gained most of its popularity in recent years.
Estimated Living Americans
9,103
About 1 in 37,653 people in the U.S.
Rarity
Rare
Predicted Gender
Male
78.1% confidence
Average Age
18
years old
Peak Year
2009
495 births
Total Registered
9,222
since 1880
Gender Distribution for Semaj
Semaj is a genuinely unisex name, used for both males (78.1%) and females (21.9%). Out of 9,222 total births registered, 7,203 were male and 2,019 were female.
Semaj as a male name
Ranked #1,069 in 2024
204 male births in 2024
Peak: 2011 (374 births)
Semaj as a female name
Ranked #6,576 in 2024
18 female births in 2024
Peak: 2009 (133 births)
Semaj: Popularity Over Time
SSA records for Semaj span from the 1970s to the 2020s, covering 6 decades of naming data. The most popular decade for this name was the 2000s, when 3,620 babies were registered. While Semaj is less common than at its peak in the 2000s, it remains a well-established name with steady registrations.
Semaj by Decade
How has Semaj 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.
Semaj by State
Birth registrations for Semaj span all 29 states and territories in the SSA database. The highest counts are in California, Pennsylvania, Texas. The lowest are in Oklahoma, Kansas, Delaware. On average, about 229 Semajs were registered per state.
Semaj + Last Name Combinations
How many people share a full name with Semaj as the first name? Click a combination below to see the estimate, or search any pairing.
Names Similar to Semaj
Other first names starting with S with a similar number of bearers.
Semaj: Questions and Answers
How many people in the U.S. are named Semaj?
We estimate approximately 9,103 people named Semaj 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 37,653 Americans share this first name.
Is Semaj a common name?
Semaj is classified as "Rare" and is more popular than 97.6% of all first names in the SSA database. A total of 9,222 births have been registered with this name since 1880.
When was Semaj most popular?
Semaj reached peak popularity in 2009, when 495 babies were given this name. The average age of a living person named Semaj is approximately 18 years old, reflecting when the name was most commonly given.
Is Semaj a male name?
Semaj is predominantly male. 78.1% of people with this name are male. See the gender breakdown above for full details.
How many Semaj Smiths are there?
To find how many people share a specific full name, we combine first name and surname frequencies. Try: Semaj Smith, Semaj Johnson, Semaj 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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