How Many People Are Named Kayin?
people named Kayin are alive in the United States today (estimate)
About 1 in 550,378 people in the US has this name
Based on 630 babies named Kayin in Social Security records from 1977 to 2025, and the share of each birth year still alive in 2025.
Popularity Rank
💎💎 Very Rare
Peak Year
39 births
Trend
Stable (last 10 years)
⚧ Gender Distribution
Of the babies given the name Kayin, 13.1% were girls and 86.9% were boys. The share has stayed close to this since the 2000s: 14.7% of the babies were girls then and 12.5% in the 2010s.
👥 Age Distribution
The average person named Kayin alive today is about 17 years old, and 96% are under 30. Half of them were between 12 and 23 in 2025.
📈 Popularity Over Time
Kayin first appears in the records in 1977 and was given most often in 2005, to 39 babies. In 2025, 8 babies got the name.
Babies given the name each year, 1977 to 2025
🏆 Rank History
Kayin has never been one of the 100 most popular boys' names. Its best rank was #2,959, in 2001. In 2025 it ranked #9,315. Among girls, its best rank was #9,781, in 2005.
| Boys | Girls | |
|---|---|---|
| Rank in 2025 | #9,315 | Not ranked |
| Best rank | #2,959 (2001) | #9,781 (2005) |
| Years in the top 100 | None | None |
| Rank in its biggest decade | #3,625 in the 2000s | #15,707 in the 2000s |
📍 State-Wise Distribution
People named Kayin alive today, by the state where they were born (estimate; state records start in 1910).
More people named Kayin were born in California than in any other state: about 7 of those alive today.
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