How Many People Are Named Tiernan?
people named Tiernan are alive in the United States today (estimate)
About 1 in 206,641 people in the US has this name
Based on 1,676 babies named Tiernan in Social Security records from 1985 to 2025, and the share of each birth year still alive in 2025.
Popularity Rank
💎💎 Very Rare
Peak Year
95 births
Trend
Stable (last 10 years)
📖 Name Origin & Meaning
Meaning:
Anglicized form of TIGHEARNÁN.
Source of the meaning, origin, pronunciation and related names: Behind the Name.
Related & Similar Names
⚧ Gender Distribution
Of the babies given the name Tiernan, 11.7% were girls and 88.3% were boys. The share of girls among babies named Tiernan fell from 12.9% in the 1990s to 0% in the 2020s.
👥 Age Distribution
The average person named Tiernan alive today is about 17 years old, and 95% are under 30. Half of them were between 12 and 22 in 2025.
📈 Popularity Over Time
Tiernan first appears in the records in 1985 and was given most often in 2009, to 95 babies. In 2025, 29 babies got the name.
Babies given the name each year, 1985 to 2025
🏆 Rank History
Tiernan has never been one of the 100 most popular boys' names. Its best rank was #1,738, in 2007. In 2025 it ranked #3,839. Among girls, its best rank was #6,109, in 2002.
| Boys | Girls | |
|---|---|---|
| Rank in 2025 | #3,839 | Not ranked |
| Best rank | #1,738 (2007) | #6,109 (2002) |
| Years in the top 100 | None | None |
| Rank in its biggest decade | #1,932 in the 2000s | #9,032 in the 2000s |
📍 State-Wise Distribution
People named Tiernan alive today, by the state where they were born (estimate; state records start in 1910).
More people named Tiernan were born in New York than in any other state: about 98 of those alive today. Compared with the national rate in the same years, Tiernan was given 5.3 times as often in New York and 1.9 times in California.
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