Kasai
Kasai was given to 437 boys in 2025, #639 among boys’ names; 1,083 Americans have been recorded with it since 1996 (Social Security Administration, published May 2026).
An estimated 1,080 Americans named Kasai and born in the U.S. are alive in 2026 (99% of everyone recorded); the median is 3 years old and half are between 1 and 7.
Kasai climbed 1,108 places in 2025, the biggest climb among the boys’ top 1,000.
Girls and boys together; gaps are years SSA did not record (fewer than 5 births).
Births of Kasai by year: SSA national baby-name file, 1880-2025, published May 8, 2026. SSA’s notes on the data.
How popular is Kasai?
#639 among boys’ names, 2025
Kasai rose from #5,872 in 2015 to #639 in 2025 among boys’ names; its share of boys born rose from 0.01 to 0.26 per 1,000.
444 babies in 2025, the peak
Kasai peaked in 2025, when 444 babies were given it (437 boys, #639 among boys’ names). In 2024 it went to 95 boys.
Births by sex.
| Year | Births | Rank | Per 1,000 boys |
|---|---|---|---|
| 2025 | 437 | #639 | 0.26 |
| 2024 | 95 | #1,747 | 0.06 |
| 2023 | 64 | #2,234 | 0.04 |
| 2022 | 57 | #2,453 | 0.03 |
| 2021 | 45 | #2,793 | 0.03 |
| 2020 | 52 | #2,485 | 0.03 |
| 2019 | 70 | #2,070 | 0.04 |
| 2018 | 32 | #3,476 | 0.02 |
| 2017 | 26 | #4,039 | 0.01 |
| 2016 | 19 | #5,042 | 0.01 |
Every recorded year (28)
| Year | Births | Rank | Per 1,000 boys |
|---|---|---|---|
| 2015 | 15 | #5,872 | 0.01 |
| 2014 | 10 | #7,848 | 0.01 |
| 2013 | 8 | #9,225 | under 0.01 |
| 2012 | 11 | #7,296 | 0.01 |
| 2011 | 8 | #9,186 | under 0.01 |
| 2010 | 7 | #10,218 | under 0.01 |
| 2009 | 7 | #10,440 | under 0.01 |
| 2008 | 8 | #9,430 | under 0.01 |
| 2007 | 8 | #9,332 | under 0.01 |
| 2006 | 9 | #8,388 | under 0.01 |
| 2005 | 10 | #7,398 | 0.01 |
| 2004 | 7 | #9,450 | under 0.01 |
| 2003 | 12 | #6,056 | 0.01 |
| 2002 | 22 | #3,855 | 0.01 |
| 2001 | 6 | #9,919 | under 0.01 |
| 2000 | 8 | #7,821 | under 0.01 |
| 1999 | 7 | #8,296 | under 0.01 |
| 1996 | 5 | #9,782 | under 0.01 |
Ranks and shares: boys’ names in each year’s SSA file; share of all boys SSA recorded that year.
Is Kasai a boy’s or a girl’s name?
Of the 1,083 Americans recorded as Kasai, 2% are girls and 98% boys. In 2025 it went to 7 girls and 437 boys.
Years with fewer than 20 babies given the name are left blank.
Girls and boys named Kasai: the SSA national file counts each sex separately.
How many people are named Kasai, and how old are they?
1,080 alive in 2026, estimated
That is 99% of the 1,083 Americans ever recorded as Kasai. The median Kasai alive today is 3 years old; half are between 1 and 7.
The 2020 Census counted 302 people named Kasai (42 women and girls, 260 men and boys). SSA’s births carried forward to Census day, April 1, 2020, predict 331 born in the U.S. The Census count is 9% below that prediction.
Alive today, by age
Alive today, by generation
| Generation | Born | Alive |
|---|---|---|
| Millennials | 1981-1996 | 5 |
| Generation Z | 1997-2012 | 128 |
| Generation Alpha | 2013-2025 | 942 |
An estimate, not a count. SSA’s files count people born in the United States who received a Social Security number, so anyone born abroad is not in them; before 1937 most people got a number as adults, and their survival is counted from that age.
Living estimate: SSA births carried forward with the survival rates in SSA’s cohort life tables (2024 Trustees Report) for each birth year and sex. How the estimate is made. Count: Census Bureau, first names in the 2020 Census (released April 14, 2026; names reported 100 or more times, with the Bureau’s disclosure-avoidance adjustment).
Names spelled alike
Of these 3 names spelled alike, given to 6,069 babies since 1880, Kasai is the second most given (18% of them). In 2025 it was given to 444 of their 642 babies (69%), the most given that year.
Spelled alike: names in the SSA national file with the same pattern of letters and sounds and at most two letters apart, and Wiktionary’s listed forms; births since 1880 and in 2025, and each name’s peak year, from the SSA national file, published May 8, 2026. Some are separate names, not spellings of one.
Names that rose and fell in the same decades as Kasai
Names whose births rose and fell across the same decades, measured on each decade’s share of births.
Similar histories: each decade’s share of births, from the SSA national file, 1880-2025, published May 8, 2026. SSA’s notes on the data.
More about Kasai and names like it
- Compare Kasai and KaseBirths, ranks, peak and the living estimate side by side.
- The most given names of the 2020sKasai peaked in 2025.
- Pennsylvania’s most given namesThe state where SSA recorded the most babies named Kasai since 1910.
- The top names of 2025The year the most babies were named Kasai.
- The names of Generation AlphaMost people named Kasai alive today were born 2013-2025.
- Names starting with KMost given first.