Tiernan
Boy name · #3799 in 2025 · Uniqueness 65/100
Tiernan is currently the #3799 boy name in the United States — 29 babies received it in 2025. A decade ago it stood at #2641, so the name has been falling over the past ten years. Roughly one in every 62,069 boys born in 2025 was named Tiernan.
The 40-year story
Tiernan first appears in the Social Security records in 1985, when 5 boys received the name. Its peak came in 2007, when 86 boys were named Tiernan — good for #1728 that year. Today's parents encounter it on its way down the popularity curve, which for many parents is exactly the appeal. Following the curve matters more than today's snapshot: a name's position on its rise-peak-decline arc is the best predictor of how common it will feel in a kindergarten class five years from now.
Babies named Tiernan per year, 1880–2025. Source: SSA.
Unlock the 5-year forecast and compare Tiernan against up to 5 other names.
Uniqueness: will there be another Tiernan in class?
Tiernan scores 65 out of 100 on our uniqueness scale, which blends current rarity with five-year momentum — putting it in the "distinctive" band. That middle band is the sweet spot many parents hunt for: recognizable without being everywhere.
Where Tiernan is most common
State-level data for Tiernan is sparse in 2025 — the name's footprint is too small for most states to report (the SSA suppresses counts under 5 per state for privacy).
Names like Tiernan
Statistically, parents drawn to Tiernan tend to be choosing among names with similar popularity arcs, era profiles, and sounds — the closest matches in our model are Kiernan, Teegan, Tayvion, Cainan, and Terrion.
KiernanTeeganTayvionCainanTerrionQuinlanTeganKeylan
Rank history (last 25 years)
| Year | Babies named Tiernan | Rank |
|---|---|---|
| 2025 | 29 | #3757 |
| 2024 | 26 | #4072 |
| 2023 | 35 | #3347 |
| 2022 | 38 | #3151 |
| 2021 | 32 | #3497 |
| 2020 | 20 | #4698 |
| 2019 | 24 | #4230 |
| 2018 | 28 | #3793 |
| 2017 | 26 | #3993 |
| 2016 | 36 | #3161 |
| 2015 | 46 | #2641 |
| 2014 | 49 | #2516 |
| 2013 | 53 | #2364 |
| 2012 | 56 | #2292 |
| 2011 | 73 | #1905 |
| 2010 | 73 | #1924 |
| 2009 | 85 | #1774 |
| 2008 | 78 | #1861 |
| 2007 | 86 | #1728 |
| 2006 | 67 | #1994 |
| 2005 | 69 | #1854 |
| 2004 | 68 | #1815 |
| 2003 | 62 | #1885 |
| 2002 | 55 | #1998 |
| 2001 | 49 | #2117 |
Frequently asked questions
Is Tiernan a popular boy name?
Tiernan ranked #3799 among boys in 2025 with 29 babies given the name — outside the top 500, making it an uncommon pick. Ten years earlier it ranked #2641.
When was the name Tiernan most popular?
Tiernan peaked in 2007, when 86 American boys received the name (ranked #1728 that year). Since 2007 the name has declined from that high.
How rare is the name Tiernan?
In 2025, roughly 1 in 62,069 newborn American boys was named Tiernan. It scores 65/100 on our uniqueness scale (rarity blended with momentum), which we classify as "distinctive".
Data source: U.S. Social Security Administration name statistics, 1880–2025, national and state files. Counts reflect Social Security card applications; names with fewer than 5 occurrences in a state-year are suppressed by the SSA.