Sekai
Boy name · #2445 in 2025 · Very rare
How old is the name Sekai? In official American birth records, Sekai has been tracked continuously since 2001, giving it 24 years of documented American history.
Sekai is currently the #2445 boy name in the United States — 56 babies received it in 2025. A decade ago it stood at #12086, so the name has been rising over the past ten years. Roughly one in every 32,143 boys born in 2025 was named Sekai.
The 24-year story
Sekai first appears in the Social Security records in 2001, when 7 boys received the name. Its all-time peak is essentially right now: 2025, with 56 babies and a rank of #2421. 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.
Babies named Sekai per year. Source: Official national birth records.
Unlock the 5-year forecast and compare Sekai against up to 5 other names.
Uniqueness: will there be another Sekai in class?
On our rarity read — which blends how common Sekai is today with its five-year momentum — the name reads as "very rare". A high score means genuine rarity — your Sekai will likely be the only one in the room, with the occasional spelling-out as the price.
Where Sekai is most common
State-level data for Sekai 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 Sekai
Statistically, parents drawn to Sekai tend to be choosing among names with similar popularity arcs, era profiles, and sounds — the closest matches in our model are Sakai, Rakai, Xakai, Dakai, and Elikai.
SakaiRakaiXakaiDakaiElikaiZakkaiAlakaiJahkai
Rank history (last 25 years)
| Year | Babies named Sekai | Rank |
|---|---|---|
| 2025 | 56 | #2421 |
| 2024 | 37 | #3216 |
| 2023 | 41 | #3005 |
| 2022 | 30 | #3691 |
| 2021 | 12 | #6698 |
| 2020 | 9 | #8067 |
| 2019 | 10 | #7643 |
| 2017 | 10 | #7546 |
| 2016 | 9 | #8146 |
| 2015 | 5 | #12086 |
| 2012 | 6 | #10770 |
| 2011 | 6 | #10808 |
| 2010 | 7 | #9693 |
| 2009 | 12 | #6802 |
| 2008 | 6 | #11037 |
| 2006 | 5 | #12055 |
| 2005 | 10 | #7096 |
| 2003 | 6 | #9581 |
| 2001 | 7 | #8339 |
Frequently asked questions
How old is the name Sekai?
In official American birth records, the name Sekai first appeared in 2001 (over 24 years ago), when 7 newborn boys received the name. It has been tracked in modern national records for 24 years.
Is Sekai a popular boy name?
Sekai ranked #2445 among boys in 2025 with 56 babies given the name — outside the top 500, making it an uncommon pick. Ten years earlier it ranked #12086.
When was the name Sekai most popular?
Sekai peaked in 2025, when 56 American boys received the name (ranked #2421 that year). That peak is current — the name is at or near its all-time high right now.
How rare is the name Sekai?
In 2025, roughly 1 in 32,143 newborn American boys was named Sekai. 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.