Cai Boy & girl
How popular is Cai?
#2,108 boy name in 2025
69 baby boys were named Cai in the US in 2025, making it the 2108th most popular boy name. Another 12 girls got the name (#8,360 for girls).
Cai popularity over time
Boys Girls
| Rank in 2025 | #2,108 for boys (▼ 206 from 2024) |
|---|---|
| Babies in 2025 | 69 boys, 12 girls |
| 10-year trend | Falling (-16% babies vs 2015) |
| Earlier ranks | #1,815 in 2015, #2,113 in 2020 |
| Peak year | 2022 (108 boys) |
| Highest rank | #1,611 in 2022 |
| First recorded | 1989 |
| Boys vs girls (last 10 years) | 76% boys, 24% girls |
| Chance a classmate shares it | 0.1% in a class of 25 kids born in 2025 |
Cai counting every spelling
Social Security counts each spelling as its own name. Adding together the spellings that sound alike, the Kai family of names ranked #98 for boys in 2025 (#86 the year before), with 3,837 babies in all.
| Spelling | Boys in 2025 | Share |
|---|---|---|
| Kai | 3,768 | 98% |
| Cai | 69 | 2% |
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 Cai is most popular
Babies named Cai per 1,000 boys born in each state, 2021 to 2025. Darker means more common.
Cai by decade
Boy names about as popular as Cai
Questions
- Is Cai a boy or girl name?
- Cai is used for both. Over the last 10 years, 76% of babies named Cai were boys and 24% were girls.
- How popular is the name Cai?
- 69 baby boys were named Cai in the US in 2025, making it the 2108th most popular boy name. Another 12 girls got the name (#8,360 for girls).
- When was Cai most popular?
- Cai peaked in 2022, when 108 boys were given the name. Its highest rank was #1,611 in 2022.
- How many people are named Cai?
- 1,945 babies have been named Cai in the US since 1880. We estimate about 1,930 of them are alive in 2026, with a median age of 10.
- Where is Cai most popular?
- From 2021 to 2025, Cai was most common in Florida, at 0.1 of every 1,000 boys 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.