Dia
Girl name · #4194 in 2025 · Very rare
How old is the name Dia? In official American birth records, Dia has been tracked continuously since 1948, giving it 77 years of documented American history.
Dia ranks #4194 among American girls' names as of 2025, with 34 newborns given the name that year. A decade ago it stood at #2810, so the name has been falling over the past ten years. Roughly one in every 52,941 girls born in 2025 was named Dia.
The 77-year story
Dia first appears in the Social Security records in 1948, when 5 girls received the name. Its peak came in 2015, when 62 girls were named Dia — good for #2810 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 Dia per year. Source: Official national birth records.
Unlock the 5-year forecast and compare Dia against up to 5 other names.
Uniqueness: will there be another Dia in class?
On our rarity read — which blends how common Dia is today with its five-year momentum — the name reads as "very rare". A high score means genuine rarity — your Dia will likely be the only one in the room, with the occasional spelling-out as the price.
Where Dia is most common
State-level data for Dia is too sparse in 2025 to rank by rate — in most states its count falls below the SSA's per-state reporting threshold (counts under 5 are withheld).
Names like Dia
Statistically, parents drawn to Dia tend to be choosing among names with similar popularity arcs, era profiles, and sounds — the closest matches in our model are Acadia, Rima, Lidia, Hadia, and Sadia.
AcadiaRimaLidiaHadiaSadiaDanyaDevinaXia
Rank history (last 25 years)
| Year | Babies named Dia | Rank |
|---|---|---|
| 2025 | 34 | #4172 |
| 2024 | 35 | #4114 |
| 2023 | 54 | #3047 |
| 2022 | 48 | #3313 |
| 2021 | 45 | #3435 |
| 2020 | 49 | #3179 |
| 2019 | 40 | #3718 |
| 2018 | 40 | #3739 |
| 2017 | 42 | #3627 |
| 2016 | 50 | #3229 |
| 2015 | 62 | #2810 |
| 2014 | 54 | #3080 |
| 2013 | 56 | #2973 |
| 2012 | 60 | #2866 |
| 2011 | 44 | #3550 |
| 2010 | 41 | #3745 |
| 2009 | 41 | #3800 |
| 2008 | 36 | #4268 |
| 2007 | 36 | #4213 |
| 2006 | 35 | #4165 |
| 2005 | 34 | #4118 |
| 2004 | 28 | #4707 |
| 2003 | 17 | #6576 |
| 2002 | 14 | #7444 |
| 2001 | 22 | #5174 |
Frequently asked questions
How old is the name Dia?
In official American birth records, the name Dia first appeared in 1948 (over 77 years ago), when 5 newborn girls received the name. It has been tracked in modern national records for 77 years.
Is Dia a popular girl name?
Dia ranked #4194 among girls in 2025 with 34 babies given the name — outside the top 500, making it an uncommon pick. Ten years earlier it ranked #2810.
When was the name Dia most popular?
Dia peaked in 2015, when 62 American girls received the name (ranked #2810 that year). Since 2015 the name has declined from that high.
How rare is the name Dia?
In 2025, roughly 1 in 52,941 newborn American girls was named Dia. On our rarity scale (rarity blended with momentum) we classify it as "very rare".
Data source: Official American birth records, 1880–2025, national and state files. Counts reflect registered birth records for American families.