Cleo Girl
How popular is Cleo?
#577 girl name in 2025
516 baby girls were named Cleo in the US in 2025, making it the 577th most popular girl name. Another 18 boys got the name (#5,207 for boys).
Cleo popularity over time
Boys Girls
| Rank in 2025 | #577 for girls (▲ 30 from 2024) |
|---|---|
| Babies in 2025 | 516 girls, 18 boys |
| 10-year trend | Rising fast (+330% babies vs 2015) |
| Earlier ranks | #1,743 in 2015, #881 in 2020 |
| Peak year | 1920 (1,049 girls) |
| Highest rank | #171 in 1907 |
| First recorded | 1880 |
| Boys vs girls (last 10 years) | 5% boys, 95% girls |
| Chance a classmate shares it | 0.4% in a class of 25 kids born in 2025 |
Cleo counting every spelling
Social Security counts each spelling as its own name. Adding together the spellings that sound alike, the Cleo family of names ranked #504 for girls in 2025 (#528 the year before), with 575 babies in all.
| Spelling | Girls in 2025 | Share |
|---|---|---|
| Cleo | 516 | 90% |
| Kleo | 59 | 10% |
Spellings are grouped by how they sound, using our own rules, so a few groupings may not match how your family says the name.
Where Cleo is most popular
Babies named Cleo per 1,000 girls born in each state, 2021 to 2025. Darker means more common.
Cleo by decade
| Decade | Baby girls | Best rank |
|---|---|---|
| 1880s | 358 | #283 |
| 1890s | 1,153 | #237 |
| 1900s | 2,441 | #171 |
| 1910s | 7,368 | #180 |
| 1920s | 8,218 | #191 |
| 1930s | 4,183 | #284 |
| 1940s | 2,239 | #384 |
| 1950s | 1,321 | #685 |
| 1960s | 578 | #1,234 |
| 1970s | 331 | #2,019 |
| 1980s | 309 | #2,483 |
| 1990s | 471 | #2,250 |
| 2000s | 610 | #2,189 |
| 2010s | 1,380 | #968 |
| 2020s | 2,605 | #577 |
Girl names about as popular as Cleo
Questions
- Is Cleo a boy or girl name?
- Cleo is mostly a girl name. Over the last 10 years, 95% of babies named Cleo were girls.
- How popular is the name Cleo?
- 516 baby girls were named Cleo in the US in 2025, making it the 577th most popular girl name. Another 18 boys got the name (#5,207 for boys).
- When was Cleo most popular?
- Cleo peaked in 1920, when 1,049 girls were given the name. Its highest rank was #171 in 1907.
- How many people are named Cleo?
- 45,092 babies have been named Cleo in the US since 1880. We estimate about 13,024 of them are alive in 2026, with a median age of 54.
- Where is Cleo most popular?
- From 2021 to 2025, Cleo was most common in Utah, at 0.8 of every 1,000 girls born there.
Source: Social Security Administration baby name data, 1880 to 2025 (names given to at least 5 babies of a sex in a year). Living-people and median-age figures are our estimates using US life tables. How we calculate.