Baby Names US
Unisex name ★ peaked 2023

Harlo

Gender Unisex · 59% girls Rank 2025 #3,538 Trend ↑ Rising 33%
Rank 2025
#3,538
among girls · ↑1,526 vs 2024
Babies in 2025
72
named Harlo · +18% vs 2024
How common
1 in 37,378
girls born in 2025
Peak year
2023
78 babies
All-time total
753
#12,656 all-time among girls
First recorded
1916
in Social Security records

Harlo popularity over time

753 babies have been named Harlo since 1916, according to official Social Security records. Switch measure to see births per year or the yearly rank.

Measure
Births per 1,000 babies of that sex, comparable across eras
0.010.020.030.0418801900192019401960198020002020GirlsBoys
GirlsBoys

By decade. Change compares yearly averages, so the current partial decade is on equal footing. Best rank is the name's best yearly rank within the decade.

Decade Girls Boys Total Per year Change Best rank
1880s – – – – – –
1890s – – – – – –
1900s – – – – – –
1910s – 21 21 2 – –
1920s – 47 47 5 +124% –
1930s – 33 33 3 -30% –
1940s – 16 16 2 -52% –
1950s – 5 5 1 -69% –
1960s – – – – – –
1970s – – – – – –
1980s – – – – – –
1990s – – – – – –
2000s 27 5 32 3 – #7,464
2010s 210 37 247 25 +672% #3,873
2020s (to 2025) 210 142 352 59 +138% #3,398

Where Harlo is heading

A five-year projection from the recent trend in births per 1,000 girls (damped so it flattens over time), converted to babies at today's birth totals. The implied rank places that projection in the 2025 field. A projection, not a promise: real trends bend.

Year Projected babies Per 1,000 girls Implied rank
2026 45 0.03 outside top 500
2027 47 0.03 outside top 500
2028 49 0.03 outside top 500
2029 50 0.03 outside top 500
2030 51 0.03 outside top 500

The story of Harlo

Harlo is rare for girls in the United States, ranked #3,538 in 2025 with 43 babies given the name. It is currently rising compared with a decade ago.

Since 1916, 753 American babies have been named Harlo, about 59% girls and 41% boys, making it a genuinely unisex name. Its peak came in 2023, when 78 newborns received the name, the signature sound of the 2020s.

The chart above shows the full history: the popularity view (births per 1,000 babies) is the honest comparison across generations, since total US births have changed enormously since 1880. Switch to the rank view to see where Harlo stood among all girls' names in any year, or use the compare tool to plot it against other names.

How old are people named Harlo?

The median living Harlo is about 5 years old; half are between 2 and 11. An estimated 600 people named Harlo are alive in the United States today.

median 5 020406080100

Estimated from births per year and Social Security period life tables; an approximation of the living age distribution, by age in years.

Harlo year by year

Every year since 2001, and five-year steps back to 1880. Rank is within each sex.

Year Girls Girls rank Boys Boys rank
2025 43 #3,538 29 #3,793
2024 26 #5,064 35 #3,353
2023 47 #3,398 31 #3,656
2022 27 #4,959 21 #4,764
2021 36 #4,051 19 #4,990
2020 31 #4,391 7 #9,930
2019 38 #3,873 – –
2018 21 #5,862 – –
2017 22 #5,727 – –
2016 18 #6,746 5 #12,906
2015 18 #6,829 7 #9,929
2014 21 #6,075 7 #10,021
2013 12 #9,231 6 #11,226
2012 16 #7,586 6 #11,294
2011 23 #5,807 6 #11,343
2010 21 #6,259 – –
2009 17 #7,464 5 #13,155
2008 10 #11,090 – –
2007 – – – –
2006 – – – –
2005 – – – –
2004 – – – –
2003 – – – –
2002 – – – –
2001 – – – –
2000 – – – –
1995 – – – –
1990 – – – –
1985 – – – –
1980 – – – –
1975 – – – –
1970 – – – –
1965 – – – –
1960 – – – –
1955 – – – –
1950 – – 5 #3,897
1945 – – 5 #3,504
1940 – – – –
1935 – – 8 #2,805
1930 – – – –
1925 – – 8 #3,253
1920 – – 8 #3,334
1915 – – – –
1910 – – – –
1905 – – – –
1900 – – – –
1895 – – – –
1890 – – – –
1885 – – – –
1880 – – – –

Frequently asked questions

Quick answers about Harlo, drawn from the same Social Security data as the charts above.

How old is the average Harlo?

The median living Harlo is about 5 years old. Half of all living Harlos are between 2 and 11 years old.

How many people named Harlo are alive today?

An estimated 600 people named Harlo are alive in the United States, based on 753 recorded births and Social Security life tables.

How popular is the name Harlo in 2025?

Harlo ranked #3,538 among girls' names in the United States in 2025, with 43 babies given the name, according to Social Security Administration data.

How many people are named Harlo?

753 babies have been named Harlo in the United States since 1916, based on Social Security card applications.

When was the name Harlo most popular?

Harlo peaked in 2023, when 78 newborns received the name.

Is Harlo a boy or girl name?

Harlo is used for both: about 59% of babies named Harlo have been girls and 41% boys.

Is the name Harlo rising or falling?

Harlo is on the rise, noticeably more popular now than a decade ago.

Will Harlo become more popular?

Harlo is trending upward. If the recent trend holds, we project roughly 51 girls named Harlo in 2030, which would rank outside the top 500. Forecasts assume the current trend continues and become less certain further out.

Names like Harlo

Names that sound and feel close to Harlo: shared sounds, similar era, similar popularity. Each links to its full history.

Compare Harlo with similar names → More names starting with H →