How Many People Are Named Niamh?
An estimated 1,550 people in the United States have the first name Niamh. It is almost exclusively a female name. The average bearer is 18 years old, and Niamh peaked in popularity in 2008 with 74 births that year.
Below you will find a full statistical profile of Niamh 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 Niamh paired with any surname.
Estimated Living Americans
1,550
About 1 in 221,132 people in the U.S.
Rarity
Rare
Predicted Gender
Female
100.0% confidence
Average Age
18
years old
Peak Year
2008
74 births
Total Registered
1,574
since 1880
Gender Distribution for Niamh
Niamh is almost exclusively a female name. Out of 1,574 total births registered, 100.0% were female.
Niamh as a female name
Ranked #3,148 in 2024
51 female births in 2024
Peak: 2008 (74 births)
Niamh: Popularity Over Time
SSA records for Niamh span from the 1960s to the 2020s, covering 6 decades of naming data. The most popular decade for this name was the 2000s, when 636 babies were registered. Niamh has declined significantly from its peak in the 2000s. Recent registrations are a fraction of what they were at the name's height.
Niamh by Decade
How has Niamh 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.
Niamh by State
Birth registrations for Niamh span all 8 states and territories in the SSA database. The highest counts are in New York, Massachusetts, California. The lowest are in Texas, Colorado, New Jersey. On average, about 90 Niamhs were registered per state.
Niamh + Last Name Combinations
How many people share a full name with Niamh as the first name? Click a combination below to see the estimate, or search any pairing.
Names Similar to Niamh
Other first names starting with N with a similar number of bearers.
Niamh: Questions and Answers
How many people in the U.S. are named Niamh?
We estimate approximately 1,550 people named Niamh 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 221,132 Americans share this first name.
Is Niamh a common name?
Niamh is classified as "Rare" and is more popular than 92.6% of all first names in the SSA database. A total of 1,574 births have been registered with this name since 1880.
When was Niamh most popular?
Niamh reached peak popularity in 2008, when 74 babies were given this name. The average age of a living person named Niamh is approximately 18 years old, reflecting when the name was most commonly given.
Is Niamh a female name?
Niamh is predominantly female. 100.0% of people with this name are female. See the gender breakdown above for full details.
How many Niamh Smiths are there?
To find how many people share a specific full name, we combine first name and surname frequencies. Try: Niamh Smith, Niamh Johnson, Niamh 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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