US rank #5114 Unisex name Peak 2023 404 births

Harlo — #5114 US unisex name

404 babies named Harlo in U.S. Social Security records since 2008, with the highest year being 2023. Year-by-year trend, decade aggregates, and state-level rankings drawn from federal birth data.

2000s272010s2102020s167
#5114
of 17,661 girls in use

More common than 71% of names given to girls today.

2010s
Peak decade

52% of everyone ever named Harlo was born in this single decade.

2023
Single peak year

47 babies were named Harlo in 2023 — its busiest year on record.

What the Data Says About Harlo

The Social Security Administration has registered 404 babies named Harlo between 2008 and 2024, spanning 17 consecutive years of U.S. birth records. As a girl's name, Harlo currently holds the #5114 rank among girls for 2024. The name reached its historical peak in 2023, when 47 babies received it in a single year. Harlo is classified as unisex in SSA records: the opposite-sex variant accounts for 277 additional births since 1916.

Decade-level aggregation shows that Harlo performed strongest in the 2010s, accumulating 210 births during that ten-year window. Across the 3 decades of recorded activity, Harlo shows a stable profile with only moderate drift from its peak decade. Geographically, the name is most concentrated in Pennsylvania, which accounts for 6 births — the largest state-level total in the dataset — followed by Texas and California. In total, SSA state-level files list Harlo in 3 of the 51 U.S. reporting jurisdictions.

No etymological entry is currently available for Harlo in our reference dataset. These figures derive from SSA's annual national and state-level name files, which include any name appearing at least five times in a given year or state-year; names below that threshold are suppressed for privacy and therefore excluded from the totals shown here. The 404 total represents a lower bound — actual usage may be higher in years or states where the count fell below the disclosure floor. This page is provided for informational and research purposes only and does not constitute personal, legal, or naming advice.

Harlo at a glance

Outside the top 1,000

Total births

404

Since 2008

17 years of records

Peak year

2023

47 births that year

Strongest decade: 2010s

Current rank

#5,114

Among girls

As of 2024

Active since

2008

Recorded for 17 years

Last year on file: 2024

Harlo popularity over time — girls

Annual U.S. births registered with the Social Security Administration · 2024–2008

Outside the top 1,000
Peak year (2023)
47
Annual births at peak — across 17 years of records
01020304050 2024202120182015201220092008 10

Harlo popularity over time — boys

277 total births recorded since 1916 (Harlo as boys' name)

Unisex variant — 277 births
010203040 202420202013195019381929192519181916 7

Harlo by decade

Total births in each ten-year window — peak vs trough at a glance

Peak: 2010s
Peak decade
2010s
210 births that decade — 52% of Harlo's all-time total
2000s272010s2102020s167

Harlo by state

Where Harlo concentrates geographically — total births since 2008

Geographically diffuse
Top 3 states by recorded births for the name Harlo
Rank State Visual share Births Share of total
#1 Pennsylvania
6 1.5%
#2 Texas
6 1.5%
#3 California
5 1.2%
Pennsylvania share of Harlo's total US births 1.5%
Even split

6 of 404 births nationwide. Compared to a flat distribution across 3 reporting states.

Frequently Asked Questions

How popular is the name Harlo?
404 babies have been named Harlo since 2008. It currently ranks #5114 among girls. The peak year was 2023 with 47 births.
When was Harlo most popular?
Harlo was most popular in the 2010s decade with 210 total births. The single peak year was 2023.
Where is Harlo most popular?
The top states for the name Harlo are Pennsylvania (6 births), Texas (6 births), California (5 births).
Is Harlo a unisex name?
Yes, Harlo is used for both boys and girls. As a girl's name it has 404 births, and as a boy's name it has 277 births.
How long has the name Harlo been used?
Harlo has been recorded in Social Security data since 2008, spanning 17 years of data through 2024.
What names are similar to Harlo?
Names with a similar sound or spelling include Harper, Harriet, Harmony, Harley, and 4 more. These share a common prefix and are also used for girls.

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Data Sources

Data as of 2024. Source: U.S. Social Security Administration (SSA).

Primary: Source: U.S. Social Security Administration, Baby Names from Social Security Card Applications — National Data, 2008–2024 (ssa.gov/oact/babynames). National-level data includes all names with 5 or more occurrences in a given year.

State-level: Source: U.S. Social Security Administration, Baby Names — State-Level Files (namesbystate.zip). Includes all names with 5 or more occurrences per state per year; rarer names are excluded for privacy.