How Many People Are Named Niall?
An estimated 1,947 people in the United States have the first name Niall. It is almost exclusively a male name. The average bearer is 21 years old, and Niall peaked in popularity in 2024 with 109 births that year.
Below you will find a full statistical profile of Niall 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 Niall paired with any surname.
Estimated Living Americans
1,947
About 1 in 176,042 people in the U.S.
Rarity
Rare
Predicted Gender
Male
100.0% confidence
Average Age
21
years old
Peak Year
2024
109 births
Total Registered
1,995
since 1880
Gender Distribution for Niall
Niall is almost exclusively a male name. Out of 1,995 total births registered, 100.0% were male.
Niall as a male name
Ranked #1,582 in 2024
109 male births in 2024
Peak: 2024 (109 births)
Niall: Popularity Over Time
SSA records for Niall span from the 1950s to the 2020s, covering 8 decades of naming data. The most popular decade for this name was the 2010s, when 576 babies were registered. While Niall is less common than at its peak in the 2010s, it remains a well-established name with steady registrations.
Niall by Decade
How has Niall 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.
Niall by State
Birth registrations for Niall span all 13 states and territories in the SSA database. The highest counts are in New York, California, Massachusetts. The lowest are in Oregon, North Carolina, Colorado. On average, about 45 Nialls were registered per state.
Niall + Last Name Combinations
How many people share a full name with Niall as the first name? Click a combination below to see the estimate, or search any pairing.
Names Similar to Niall
Other first names starting with N with a similar number of bearers.
Niall: Questions and Answers
How many people in the U.S. are named Niall?
We estimate approximately 1,947 people named Niall 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 176,042 Americans share this first name.
Is Niall a common name?
Niall is classified as "Rare" and is more popular than 93.6% of all first names in the SSA database. A total of 1,995 births have been registered with this name since 1880.
When was Niall most popular?
Niall reached peak popularity in 2024, when 109 babies were given this name. The average age of a living person named Niall is approximately 21 years old, reflecting when the name was most commonly given.
Is Niall a male name?
Niall is predominantly male. 100.0% of people with this name are male. See the gender breakdown above for full details.
How many Niall Smiths are there?
To find how many people share a specific full name, we combine first name and surname frequencies. Try: Niall Smith, Niall Johnson, Niall 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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