Sia
Girl name · #1107 in 2025 · Rare
Sia is currently the #1107 girl name in the United States — 215 babies received it in 2025. A decade ago it stood at #1636, so the name has been rising over the past ten years. Roughly one in every 8,372 girls born in 2025 was named Sia.
Babies named Sia per year. Source: SSA.
The 57-year story
Sia first appears in the Social Security records in 1968, when 9 girls received the name. Its all-time peak is essentially right now: 2025, with 215 babies and a rank of #1107. Names at their peak can keep climbing — or be one trend cycle from the long slide that eventually hits most popular names. 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 Sia against up to 5 other names.
Uniqueness: will there be another Sia in class?
On our rarity read — which blends how common Sia is today with its five-year momentum — the name reads as "rare". A high score means genuine rarity — your Sia will likely be the only one in the room, with the occasional spelling-out as the price.
Where Sia is most common
Geography matters for names, and Sia is no exception. Adjusted for how many girls are born in each state, Sia is most common in WA (0.4 per 1,000), NJ (0.3 per 1,000), CA (0.3 per 1,000), FL (0.1 per 1,000), TX (0.1 per 1,000) — against a national average of about 0.2 per 1,000 girls. These are per-capita rates, so they show where Sia is a genuine regional favorite rather than just where the most babies are born.
Names like Sia
Statistically, parents drawn to Sia tend to be choosing among names with similar popularity arcs, era profiles, and sounds — the closest matches in our model are Sama, Safa, Zia, Siya, and Gaia.
Rank history (last 25 years)
| Year | Babies named Sia | Rank |
|---|---|---|
| 2025 | 215 | #1107 |
| 2024 | 183 | #1270 |
| 2023 | 169 | #1339 |
| 2022 | 212 | #1145 |
| 2021 | 166 | #1337 |
| 2020 | 174 | #1282 |
| 2019 | 148 | #1483 |
| 2018 | 169 | #1335 |
| 2017 | 136 | #1600 |
| 2016 | 127 | #1684 |
| 2015 | 131 | #1636 |
| 2014 | 66 | #2648 |
| 2013 | 69 | #2568 |
| 2012 | 58 | #2935 |
| 2011 | 57 | #2989 |
| 2010 | 65 | #2726 |
| 2009 | 50 | #3298 |
| 2008 | 54 | #3120 |
| 2007 | 43 | #3721 |
| 2006 | 52 | #3176 |
| 2005 | 58 | #2827 |
| 2004 | 49 | #3127 |
| 2003 | 23 | #5235 |
| 2002 | 17 | #6392 |
| 2001 | 9 | #10102 |
Frequently asked questions
Is Sia a popular girl name?
Sia ranked #1107 among girls in 2025 with 215 babies given the name — outside the top 500, making it an uncommon pick. Ten years earlier it ranked #1636.
When was the name Sia most popular?
Sia peaked in 2025, when 215 American girls received the name (ranked #1107 that year). That peak is current — the name is at or near its all-time high right now.
How rare is the name Sia?
In 2025, roughly 1 in 8,372 newborn American girls was named Sia. On our rarity scale (rarity blended with momentum) we classify it as "rare".
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.