Kain
Boy name · #1735 in 2025 · Very rare
How old is the name Kain? In official American birth records, Kain has been tracked continuously since 1973, giving it 52 years of documented American history.
In 2025, 94 baby boys were named Kain, placing it at #1735 in the official national rankings. A decade ago it stood at #1388, so the name has been falling over the past ten years. Roughly one in every 19,149 boys born in 2025 was named Kain.
The 52-year story
Kain first appears in the Social Security records in 1973, when 9 boys received the name. Its peak came in 2016, when 180 boys were named Kain — good for #1090 that year. Today's parents encounter it on its way down the popularity curve, which for many parents is exactly the appeal. Following the curve matters more than today's snapshot: a name's position on its rise-peak-decline arc is the best predictor of how common it will feel in a kindergarten class five years from now.
Babies named Kain per year. Source: Official national birth records.
Unlock the 5-year forecast and compare Kain against up to 5 other names.
Uniqueness: will there be another Kain in class?
On our rarity read — which blends how common Kain is today with its five-year momentum — the name reads as "very rare". A high score means genuine rarity — your Kain will likely be the only one in the room, with the occasional spelling-out as the price.
Where Kain is most common
State-level data for Kain is too sparse in 2025 to rank by rate — in most states its count falls below the SSA's per-state reporting threshold (counts under 5 are withheld).
Names like Kain
Statistically, parents drawn to Kain tend to be choosing among names with similar popularity arcs, era profiles, and sounds — the closest matches in our model are Cain, Kyrin, Rain, Hussain, and Kylin.
CainKyrinRainHussainKylinKalvinKorbinTorin
Rank history (last 25 years)
| Year | Babies named Kain | Rank |
|---|---|---|
| 2025 | 94 | #1728 |
| 2024 | 110 | #1573 |
| 2023 | 104 | #1650 |
| 2022 | 102 | #1678 |
| 2021 | 141 | #1320 |
| 2020 | 107 | #1539 |
| 2019 | 127 | #1394 |
| 2018 | 143 | #1282 |
| 2017 | 168 | #1132 |
| 2016 | 180 | #1090 |
| 2015 | 124 | #1388 |
| 2014 | 152 | #1205 |
| 2013 | 136 | #1277 |
| 2012 | 136 | #1285 |
| 2011 | 127 | #1331 |
| 2010 | 124 | #1368 |
| 2009 | 109 | #1518 |
| 2008 | 113 | #1452 |
| 2007 | 103 | #1527 |
| 2006 | 91 | #1596 |
| 2005 | 91 | #1546 |
| 2004 | 71 | #1763 |
| 2003 | 108 | #1296 |
| 2002 | 98 | #1346 |
| 2001 | 96 | #1345 |
Frequently asked questions
How old is the name Kain?
In official American birth records, the name Kain first appeared in 1973 (over 52 years ago), when 9 newborn boys received the name. It has been tracked in modern national records for 52 years.
Is Kain a popular boy name?
Kain ranked #1735 among boys in 2025 with 94 babies given the name — outside the top 500, making it an uncommon pick. Ten years earlier it ranked #1388.
When was the name Kain most popular?
Kain peaked in 2016, when 180 American boys received the name (ranked #1090 that year). Since 2016 the name has declined from that high.
How rare is the name Kain?
In 2025, roughly 1 in 19,149 newborn American boys was named Kain. On our rarity scale (rarity blended with momentum) we classify it as "very rare".
Data source: Official American birth records, 1880–2025, national and state files. Counts reflect registered birth records for American families.