Theia
Girl name · #1987 in 2025 · Very rare
How old is the name Theia? In official American birth records, Theia has been tracked continuously since 1967, giving it 58 years of documented American history.
Theia is currently the #1987 girl name in the United States — 97 babies received it in 2025. A decade ago it stood at #2408, so the name has been rising over the past ten years. Roughly one in every 18,557 girls born in 2025 was named Theia.
Babies named Theia per year. Source: Official national birth records.
The 58-year story
Theia first appears in the Social Security records in 1967, when 6 girls received the name. Its peak came in 2019, when 113 girls were named Theia — good for #1802 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 Theia against up to 5 other names.
Uniqueness: will there be another Theia in class?
On our rarity read — which blends how common Theia is today with its five-year momentum — the name reads as "very rare". A high score means genuine rarity — your Theia will likely be the only one in the room, with the occasional spelling-out as the price.
Where Theia is most common
State-level data for Theia 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 Theia
Statistically, parents drawn to Theia tend to be choosing among names with similar popularity arcs, era profiles, and sounds — the closest matches in our model are Kaleia, Aletheia, Laia, Junia, and Anabia.
KaleiaAletheiaLaiaJuniaAnabiaAleiaElliaAvia
Rank history (last 25 years)
| Year | Babies named Theia | Rank |
|---|---|---|
| 2025 | 97 | #1981 |
| 2024 | 110 | #1823 |
| 2023 | 98 | #2002 |
| 2022 | 91 | #2103 |
| 2021 | 99 | #1971 |
| 2020 | 77 | #2302 |
| 2019 | 113 | #1802 |
| 2018 | 109 | #1852 |
| 2017 | 112 | #1828 |
| 2016 | 98 | #2017 |
| 2015 | 76 | #2408 |
| 2014 | 42 | #3652 |
| 2013 | 18 | #6729 |
| 2012 | 14 | #8208 |
| 2011 | 17 | #7118 |
| 2010 | 8 | #12276 |
| 2009 | 9 | #11459 |
| 2008 | 6 | #15405 |
| 2007 | 6 | #15491 |
| 1989 | 6 | #10847 |
| 1973 | 5 | #8423 |
| 1967 | 6 | #6042 |
Frequently asked questions
How old is the name Theia?
In official American birth records, the name Theia first appeared in 1967 (over 58 years ago), when 6 newborn girls received the name. It has been tracked in modern national records for 58 years.
Is Theia a popular girl name?
Theia ranked #1987 among girls in 2025 with 97 babies given the name — outside the top 500, making it an uncommon pick. Ten years earlier it ranked #2408.
When was the name Theia most popular?
Theia peaked in 2019, when 113 American girls received the name (ranked #1802 that year). Since 2019 the name has declined from that high.
How rare is the name Theia?
In 2025, roughly 1 in 18,557 newborn American girls was named Theia. 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.