Oslo
Boy name · #1972 in 2025 · Very rare
How old is the name Oslo? In official American birth records, Oslo has been tracked continuously since 2007, giving it 18 years of documented American history.
In 2025, 78 baby boys were named Oslo, placing it at #1972 in the official national rankings. A decade ago it stood at #5507, so the name has been rising over the past ten years. Roughly one in every 23,077 boys born in 2025 was named Oslo.
The 18-year story
Oslo first appears in the Social Security records in 2007, when 7 boys received the name. Its all-time peak is essentially right now: 2022, with 94 babies and a rank of #1760. 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 Oslo per year. Source: Official national birth records.
Unlock the 5-year forecast and compare Oslo against up to 5 other names.
Uniqueness: will there be another Oslo in class?
On our rarity read — which blends how common Oslo is today with its five-year momentum — the name reads as "very rare". A high score means genuine rarity — your Oslo will likely be the only one in the room, with the occasional spelling-out as the price.
Where Oslo is most common
State-level data for Oslo 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 Oslo
Statistically, parents drawn to Oslo tend to be choosing among names with similar popularity arcs, era profiles, and sounds — the closest matches in our model are Kailo, Melo, Xylo, Zylo, and Miklo.
KailoMeloXyloZyloMikloRyloAstroKamilo
Rank history (last 25 years)
| Year | Babies named Oslo | Rank |
|---|---|---|
| 2025 | 78 | #1959 |
| 2024 | 82 | #1921 |
| 2023 | 87 | #1832 |
| 2022 | 94 | #1760 |
| 2021 | 51 | #2552 |
| 2020 | 38 | #3025 |
| 2019 | 29 | #3716 |
| 2018 | 22 | #4476 |
| 2017 | 14 | #6060 |
| 2016 | 12 | #6726 |
| 2015 | 16 | #5507 |
| 2014 | 10 | #7562 |
| 2013 | 5 | #12136 |
| 2012 | 13 | #6306 |
| 2011 | 6 | #10808 |
| 2010 | 5 | #12231 |
| 2009 | 12 | #6802 |
| 2007 | 7 | #9788 |
Frequently asked questions
How old is the name Oslo?
In official American birth records, the name Oslo first appeared in 2007 (over 18 years ago), when 7 newborn boys received the name. It has been tracked in modern national records for 18 years.
Is Oslo a popular boy name?
Oslo ranked #1972 among boys in 2025 with 78 babies given the name — outside the top 500, making it an uncommon pick. Ten years earlier it ranked #5507.
When was the name Oslo most popular?
Oslo peaked in 2022, when 94 American boys received the name (ranked #1760 that year). That peak is current — the name is at or near its all-time high right now.
How rare is the name Oslo?
In 2025, roughly 1 in 23,077 newborn American boys was named Oslo. 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.