Kasia
Kasia was given to 23 girls in 2025, #5,480 among girls’ names; 1,725 Americans have been recorded with it since 1958 (Social Security Administration, published May 2026).
An estimated 1,690 Americans named Kasia and born in the U.S. are alive in 2026 (98% of everyone recorded); the median is 25 years old and half are between 17 and 34.
Girls and boys together; gaps are years SSA did not record (fewer than 5 births).
Births of Kasia by year: SSA national baby-name file, 1880-2025, published May 8, 2026. SSA’s notes on the data.
What does Kasia mean?
Wiktionary, Polish section
Kasia is “a diminutive of the female given name Katarzyna”
Clipping of Katarzyna + -sia.
/ˈka.ɕa/
Meaning: Wiktionary, Polish section, as of Sep 25, 2026 (CC BY‑SA 4.0).
How popular is Kasia?
#5,480 among girls’ names, 2025
Kasia fell from #5,044 in 2015 to #5,480 in 2025 among girls’ names; its share of girls born fell from 15.1 to 14.3 per million.
71 babies in 2002, the peak
Kasia peaked in 2002, when 71 girls were given it, #2,293 among girls’ names. The 23 births of 2025 are 32% of that peak.
| Year | Births | Rank | Per million girls |
|---|---|---|---|
| 2025 | 23 | #5,480 | 14.3 |
| 2024 | 22 | #5,704 | 13.6 |
| 2023 | 17 | #6,788 | 10.6 |
| 2022 | 25 | #5,234 | 15.2 |
| 2021 | 16 | #7,101 | 9.8 |
| 2020 | 24 | #5,235 | 14.8 |
| 2019 | 26 | #5,099 | 15.5 |
| 2018 | 16 | #7,244 | 9.4 |
| 2017 | 31 | #4,528 | 18.0 |
| 2016 | 16 | #7,417 | 9.0 |
Every recorded year (61)
| Year | Births | Rank | Per million girls |
|---|---|---|---|
| 2015 | 27 | #5,044 | 15.1 |
| 2014 | 22 | #5,889 | 12.3 |
| 2013 | 26 | #5,211 | 14.8 |
| 2012 | 30 | #4,772 | 17.0 |
| 2011 | 39 | #3,876 | 22.2 |
| 2010 | 49 | #3,340 | 27.6 |
| 2009 | 35 | #4,318 | 19.1 |
| 2008 | 45 | #3,614 | 23.8 |
| 2007 | 59 | #3,012 | 30.7 |
| 2006 | 43 | #3,650 | 22.6 |
| 2005 | 63 | #2,685 | 34.1 |
| 2004 | 59 | #2,762 | 32.1 |
| 2003 | 61 | #2,619 | 33.4 |
| 2002 | 71 | #2,293 | 39.5 |
| 2001 | 62 | #2,494 | 34.4 |
| 2000 | 53 | #2,756 | 29.2 |
| 1999 | 50 | #2,760 | 28.2 |
| 1998 | 54 | #2,547 | 30.6 |
| 1997 | 35 | #3,321 | 20.1 |
| 1996 | 50 | #2,526 | 28.5 |
| 1995 | 44 | #2,749 | 25.0 |
| 1994 | 36 | #3,180 | 20.2 |
| 1993 | 26 | #4,033 | 14.4 |
| 1992 | 34 | #3,297 | 18.4 |
| 1991 | 20 | #4,893 | 10.7 |
| 1990 | 22 | #4,430 | 11.6 |
| 1989 | 33 | #3,199 | 17.9 |
| 1988 | 30 | #3,257 | 16.8 |
| 1987 | 21 | #4,046 | 12.1 |
| 1986 | 31 | #3,008 | 18.1 |
| 1985 | 30 | #3,038 | 17.4 |
| 1984 | 21 | #3,793 | 12.5 |
| 1983 | 23 | #3,481 | 13.8 |
| 1982 | 23 | #3,584 | 13.6 |
| 1981 | 14 | #5,083 | 8.4 |
| 1980 | 20 | #3,908 | 12.0 |
| 1979 | 18 | #4,120 | 11.2 |
| 1978 | 11 | #5,725 | 7.2 |
| 1977 | 20 | #3,681 | 13.0 |
| 1976 | 11 | #5,373 | 7.5 |
| 1975 | 14 | #4,446 | 9.6 |
| 1974 | 13 | #4,576 | 8.9 |
| 1973 | 8 | #6,333 | 5.5 |
| 1972 | 5 | #8,845 | 3.3 |
| 1971 | 6 | #7,803 | 3.6 |
| 1970 | 9 | #5,582 | 5.1 |
| 1968 | 5 | #7,524 | 3.0 |
| 1966 | 6 | #6,140 | 3.5 |
| 1965 | 9 | #4,641 | 5.1 |
| 1963 | 8 | #5,064 | 4.2 |
| 1958 | 5 | #6,515 | 2.5 |
Ranks and shares: girls’ names in each year’s SSA file; share of all girls SSA recorded that year.
Is Kasia a boy’s or a girl’s name?
Kasia has been recorded only for girls: SSA lists no boys with the name in 61 years of records (it lists a name only in years with 5 or more babies of a sex).
Girls and boys named Kasia: the SSA national file counts each sex separately.
How many people are named Kasia, and how old are they?
1,690 alive in 2026, estimated
That is 98% of the 1,725 Americans ever recorded as Kasia. The median Kasia alive today is 25 years old; half are between 17 and 34.
The 2020 Census counted 2,016 people named Kasia (2,000 women and girls, 16 men and boys). SSA’s births carried forward to Census day, April 1, 2020, predict 1,579 born in the U.S. The Census count is 28% above that prediction. Possible reasons: the Census counts people born abroad, whom SSA’s files leave out, and it records the name people give, which SSA may have recorded under another spelling or as part of a compound name.
Alive today, by age
Alive today, by generation
| Generation | Born | Alive |
|---|---|---|
| Baby Boomers | 1946-1964 | 11 |
| Generation X | 1965-1980 | 145 |
| Millennials | 1981-1996 | 446 |
| Generation Z | 1997-2012 | 799 |
| Generation Alpha | 2013-2025 | 289 |
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 8 names spelled alike, given to 70,390 babies since 1880, Kasia is the eighth most given (2.5% of them). In 2025 it was given to 23 of their 489 babies (4.7%), the fourth 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 Kasia
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 Kasia and names like it
- Compare Kasia and KaseyBirths, ranks, peak and the living estimate side by side.
- The most given names of the 2000sKasia peaked in 2002.
- California’s most given namesThe state where SSA recorded the most babies named Kasia since 1910.
- Polish namesWiktionary’s origin for Kasia: every such name, by how often it is given.
- The top names of 2002The year the most babies were named Kasia.
- The names of Generation ZMost people named Kasia alive today were born 1997-2012.
- Names starting with KMost given first.