Trinity
Girl name · #428 in 2025 · Distinctive
How old is the name Trinity? In official American birth records, Trinity has been tracked continuously since 1921, giving it 104 years of documented American history.
Trinity ranks #428 among American girls' names as of 2025, with 725 newborns given the name that year. A decade ago it stood at #129, so the name has been falling over the past ten years. Roughly one in every 2,483 girls born in 2025 was named Trinity.
Babies named Trinity per year. Source: Official national birth records.
The 104-year story
Trinity first appears in the Social Security records in 1921, when 6 girls received the name. Its peak came in 2004, when 5,638 girls were named Trinity — good for #48 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.
Unlock the 5-year forecast and compare Trinity against up to 5 other names.
Uniqueness: will there be another Trinity in class?
On our rarity read — which blends how common Trinity is today with its five-year momentum — the name reads as "distinctive". That middle band is the sweet spot many parents hunt for: recognizable without being everywhere.
Where Trinity is most common
Geography matters for names, and Trinity is no exception. Adjusted for how many girls are born in each state, Trinity is most common in MS (2 per 1,000), NV (1.1 per 1,000), MD (1 per 1,000), GA (0.9 per 1,000), AL (0.9 per 1,000) — against a national average of about 0.6 per 1,000 girls. These are per-capita rates, so they show where Trinity is a genuine regional favorite rather than just where the most babies are born.
Names like Trinity
Statistically, parents drawn to Trinity tend to be choosing among names with similar popularity arcs, era profiles, and sounds — the closest matches in our model are Felicity, Liberty, Delaney, Giselle, and Emely.
FelicityLibertyDelaneyGiselleEmelyMakennaMckennaAngelina
Rank history (last 25 years)
| Year | Babies named Trinity | Rank |
|---|---|---|
| 2025 | 725 | #428 |
| 2024 | 791 | #400 |
| 2023 | 875 | #348 |
| 2022 | 1,037 | #308 |
| 2021 | 1,149 | #273 |
| 2020 | 1,307 | #225 |
| 2019 | 1,646 | #177 |
| 2018 | 1,732 | #168 |
| 2017 | 1,865 | #160 |
| 2016 | 2,241 | #137 |
| 2015 | 2,525 | #129 |
| 2014 | 2,818 | #110 |
| 2013 | 2,928 | #108 |
| 2012 | 3,251 | #91 |
| 2011 | 3,625 | #77 |
| 2010 | 3,708 | #72 |
| 2009 | 4,028 | #74 |
| 2008 | 4,276 | #70 |
| 2007 | 4,374 | #72 |
| 2006 | 4,838 | #64 |
| 2005 | 5,455 | #48 |
| 2004 | 5,638 | #48 |
| 2003 | 5,130 | #56 |
| 2002 | 4,385 | #70 |
| 2001 | 4,481 | #67 |
Frequently asked questions
How old is the name Trinity?
In official American birth records, the name Trinity first appeared in 1921 (over 104 years ago), when 6 newborn girls received the name. It has been tracked in modern national records for 104 years.
Is Trinity a popular girl name?
Trinity ranked #428 among girls in 2025 with 725 babies given the name — inside the top 500: established but not ubiquitous. Ten years earlier it ranked #129.
When was the name Trinity most popular?
Trinity peaked in 2004, when 5,638 American girls received the name (ranked #48 that year). Since 2004 the name has declined from that high.
How rare is the name Trinity?
In 2025, roughly 1 in 2,483 newborn American girls was named Trinity. On our rarity scale (rarity blended with momentum) we classify it as "distinctive".
Data source: Official American birth records, 1880–2025, national and state files. Counts reflect registered birth records for American families.