Harlo
Girl name · #3567 in 2025 · Very rare
How old is the name Harlo? In official American birth records, Harlo has been tracked continuously since 2008, giving it 17 years of documented American history.
Harlo ranks #3567 among American girls' names as of 2025, with 43 newborns given the name that year. A decade ago it stood at #6721, so the name has been rising over the past ten years. Roughly one in every 41,860 girls born in 2025 was named Harlo.
The 17-year story
Harlo first appears in the Social Security records in 2008, when 10 girls received the name. Its all-time peak is essentially right now: 2023, with 47 babies and a rank of #3386. 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 Harlo per year. Source: Official national birth records.
Unlock the 5-year forecast and compare Harlo against up to 5 other names.
Uniqueness: will there be another Harlo in class?
On our rarity read — which blends how common Harlo is today with its five-year momentum — the name reads as "very rare". A high score means genuine rarity — your Harlo will likely be the only one in the room, with the occasional spelling-out as the price.
Where Harlo is most common
State-level data for Harlo 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 Harlo
Statistically, parents drawn to Harlo tend to be choosing among names with similar popularity arcs, era profiles, and sounds — the closest matches in our model are Arlo, Lilo, Harlan, Husna, and Hazely.
ArloLiloHarlanHusnaHazelyHalenHayzelHayat
Rank history (last 25 years)
| Year | Babies named Harlo | Rank |
|---|---|---|
| 2025 | 43 | #3517 |
| 2024 | 26 | #5021 |
| 2023 | 47 | #3386 |
| 2022 | 27 | #4907 |
| 2021 | 36 | #4014 |
| 2020 | 31 | #4358 |
| 2019 | 38 | #3851 |
| 2018 | 21 | #5785 |
| 2017 | 22 | #5661 |
| 2016 | 18 | #6663 |
| 2015 | 18 | #6721 |
| 2014 | 21 | #5993 |
| 2013 | 12 | #9036 |
| 2012 | 16 | #7456 |
| 2011 | 23 | #5728 |
| 2010 | 21 | #6182 |
| 2009 | 17 | #7341 |
| 2008 | 10 | #10807 |
Frequently asked questions
How old is the name Harlo?
In official American birth records, the name Harlo first appeared in 2008 (over 17 years ago), when 10 newborn girls received the name. It has been tracked in modern national records for 17 years.
Is Harlo a popular girl name?
Harlo ranked #3567 among girls in 2025 with 43 babies given the name — outside the top 500, making it an uncommon pick. Ten years earlier it ranked #6721.
When was the name Harlo most popular?
Harlo peaked in 2023, when 47 American girls received the name (ranked #3386 that year). That peak is current — the name is at or near its all-time high right now.
How rare is the name Harlo?
In 2025, roughly 1 in 41,860 newborn American girls was named Harlo. 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.