Kay Girl
How popular is Kay?
#3,902 girl name in 2025
37 baby girls were named Kay in the US in 2025, making it the 3902nd most popular girl name. Another 10 boys got the name (#7,675 for boys).
63,251living people named Kay (est.)
74median age of people named Kay
102,545babies named Kay since 1880
1 in 70,539US babies born in 2025
Kay popularity over time
Boys Girls
| Rank in 2025 | #3,902 for girls (▼ 10 from 2024) |
|---|---|
| Babies in 2025 | 37 girls, 10 boys |
| 10-year trend | Steady (-14% babies vs 2015) |
| Earlier ranks | #3,595 in 2015, #3,546 in 2020 |
| Peak year | 1942 (3,622 girls) |
| Highest rank | #70 in 1941 |
| First recorded | 1885 |
| Boys vs girls (last 10 years) | 17% boys, 83% girls |
| Chance a classmate shares it | 0.0% in a class of 25 kids born in 2025 |
Where Kay is most popular
Babies named Kay per 1,000 girls born in each state, 2021 to 2025. Darker means more common.
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- Texas: 0.0 per 1,000 (27 girls)
Kay by decade
| Decade | Baby girls | Best rank |
|---|---|---|
| 1880s | 31 | #921 |
| 1890s | 122 | #644 |
| 1900s | 452 | #401 |
| 1910s | 2,173 | #354 |
| 1920s | 2,665 | #370 |
| 1930s | 17,301 | #76 |
| 1940s | 32,654 | #70 |
| 1950s | 24,645 | #120 |
| 1960s | 12,390 | #192 |
| 1970s | 2,517 | #455 |
| 1980s | 1,409 | #912 |
| 1990s | 869 | #1,381 |
| 2000s | 635 | #2,123 |
| 2010s | 504 | #2,710 |
| 2020s | 254 | #3,329 |
Girl names about as popular as Kay
Questions
- Is Kay a boy or girl name?
- Kay is mostly a girl name. Over the last 10 years, 83% of babies named Kay were girls.
- How popular is the name Kay?
- 37 baby girls were named Kay in the US in 2025, making it the 3902nd most popular girl name. Another 10 boys got the name (#7,675 for boys).
- When was Kay most popular?
- Kay peaked in 1942, when 3,622 girls were given the name. Its highest rank was #70 in 1941.
- How many people are named Kay?
- 102,545 babies have been named Kay in the US since 1880. We estimate about 63,251 of them are alive in 2026, with a median age of 74.
- Where is Kay most popular?
- From 2021 to 2025, Kay was most common in Texas, at 0.0 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.