Cosmo
Boy name · #1935 in 2025 · Very rare
Cosmo is currently the #1935 boy name in the United States — 80 babies received it in 2025. A decade ago it stood at #3431, so the name has been rising over the past ten years. Roughly one in every 22,500 boys born in 2025 was named Cosmo.
The 115-year story
Cosmo first appears in the Social Security records in 1910, when 6 boys received the name. Its all-time peak is essentially right now: 2022, with 99 babies and a rank of #1706. 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 Cosmo per year. Source: SSA.
Unlock the 5-year forecast and compare Cosmo against up to 5 other names.
Uniqueness: will there be another Cosmo in class?
On our rarity read — which blends how common Cosmo is today with its five-year momentum — the name reads as "very rare". A high score means genuine rarity — your Cosmo will likely be the only one in the room, with the occasional spelling-out as the price.
Where Cosmo is most common
State-level data for Cosmo 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 Cosmo
Statistically, parents drawn to Cosmo tend to be choosing among names with similar popularity arcs, era profiles, and sounds — the closest matches in our model are Amadeo, Kaito, Draco, Miklo, and Cato.
AmadeoKaitoDracoMikloCatoRenzoIndigoKailo
Rank history (last 25 years)
| Year | Babies named Cosmo | Rank |
|---|---|---|
| 2025 | 80 | #1932 |
| 2024 | 99 | #1685 |
| 2023 | 94 | #1744 |
| 2022 | 99 | #1706 |
| 2021 | 78 | #1931 |
| 2020 | 60 | #2264 |
| 2019 | 49 | #2626 |
| 2018 | 41 | #2893 |
| 2017 | 42 | #2840 |
| 2016 | 21 | #4624 |
| 2015 | 32 | #3431 |
| 2014 | 14 | #5997 |
| 2013 | 20 | #4621 |
| 2012 | 16 | #5482 |
| 2011 | 22 | #4356 |
| 2010 | 25 | #3994 |
| 2009 | 18 | #5102 |
| 2008 | 22 | #4395 |
| 2007 | 19 | #4808 |
| 2006 | 33 | #3227 |
| 2005 | 41 | #2653 |
| 2004 | 26 | #3534 |
| 2003 | 22 | #3838 |
| 2002 | 29 | #3095 |
| 2001 | 22 | #3721 |
Frequently asked questions
Is Cosmo a popular boy name?
Cosmo ranked #1935 among boys in 2025 with 80 babies given the name — outside the top 500, making it an uncommon pick. Ten years earlier it ranked #3431.
When was the name Cosmo most popular?
Cosmo peaked in 2022, when 99 American boys received the name (ranked #1706 that year). That peak is current — the name is at or near its all-time high right now.
How rare is the name Cosmo?
In 2025, roughly 1 in 22,500 newborn American boys was named Cosmo. On our rarity scale (rarity blended with momentum) we classify it as "very 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.