Harlo
Boy name · #3769 in 2025 · Very rare
How old is the name Harlo? In official American birth records, Harlo has been tracked continuously since 1916, giving it 109 years of documented American history.
Harlo ranks #3769 among American boys' names as of 2025, with 29 newborns given the name that year. A decade ago it stood at #9568, so the name has been rising over the past ten years. Roughly one in every 62,069 boys born in 2025 was named Harlo.
Babies named Harlo per year. Source: Official national birth records.
The 109-year story
Harlo first appears in the Social Security records in 1916, when 7 boys received the name. Its all-time peak is essentially right now: 2024, with 35 babies and a rank of #3335. 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.
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 Khylo, Nylo, Shylo, Kamilo, and Nilo.
KhyloNyloShyloKamiloNiloKaidoJaycoApolo
Rank history (last 25 years)
| Year | Babies named Harlo | Rank |
|---|---|---|
| 2025 | 29 | #3757 |
| 2024 | 35 | #3335 |
| 2023 | 31 | #3629 |
| 2022 | 21 | #4701 |
| 2021 | 19 | #4936 |
| 2020 | 7 | #9554 |
| 2016 | 5 | #12185 |
| 2015 | 7 | #9568 |
| 2014 | 7 | #9642 |
| 2013 | 6 | #10728 |
| 2012 | 6 | #10770 |
| 2011 | 6 | #10808 |
| 2009 | 5 | #12491 |
| 1950 | 5 | #3681 |
| 1949 | 6 | #3298 |
| 1946 | 5 | #3525 |
| 1945 | 5 | #3338 |
| 1938 | 10 | #2326 |
| 1937 | 7 | #2905 |
| 1935 | 8 | #2719 |
| 1933 | 8 | #2738 |
| 1929 | 5 | #3959 |
| 1928 | 8 | #3076 |
| 1927 | 6 | #3780 |
| 1926 | 5 | #4201 |
Frequently asked questions
How old is the name Harlo?
In official American birth records, the name Harlo first appeared in 1916 (over 109 years ago), when 7 newborn boys received the name. It has been tracked in modern national records for 109 years.
Is Harlo a popular boy name?
Harlo ranked #3769 among boys in 2025 with 29 babies given the name — outside the top 500, making it an uncommon pick. Ten years earlier it ranked #9568.
When was the name Harlo most popular?
Harlo peaked in 2024, when 35 American boys received the name (ranked #3335 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 62,069 newborn American boys 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.