Kasia
A feminine Polish name derived from the Greek name Katarzyna, meaning "pure".
Name Census estimates that about 1,648 living Americans carry the first name Kasia. The name is used almost exclusively for girls. The average person named Kasia today is around 26 years old, and the year with the single highest number of Kasia births was 2002 (71 babies).
This page is the full Name Census profile for Kasia. Below you will find a gender breakdown showing how the name splits between male and female registrations, a year-by-year popularity chart stretching back to 1880, decade-level totals, the top US states for this name, its meaning and etymology, and a set of frequently asked questions with data-backed answers.
People living today
1.6K
~ 1 in 207,982 Americans
Peak year
2002
71 babies that year
Average age
26
years old
2024 SSA rank
#5,687
Tracked since 1958
Popularity
Kasia: popularity over time
The SSA tracks Kasia from the 1950s through to the 2020s, spanning 8 decades of birth certificate data. The biggest single decade for the name was the 2000s, with 551 total registrations. Usage has dropped considerably from its 2000s peak. The most recent decade brought in only a fraction of the registrations that the name once attracted.
Babies born per year
Decades
Kasia by decade
The table below breaks the full SSA timeline into ten-year windows. Each row shows how many male and female babies were given the name Kasia during that decade, along with a combined total. This is useful for spotting eras where the name surged or retreated.
Geography
Where Kasias live
The SSA's state-level files cover 11 states and territories. California, Texas, New York recorded the most babies named Kasia, while Wisconsin, Pennsylvania, Georgia recorded the fewest. The average across all reporting states is about 17 registrations each.
Origin
Meaning and history of Kasia
Kasia is a diminutive form of the feminine name Katarzyna, which is the Polish version of the name Catherine. It originated from the Greek name Aikaterine, derived from the combination of the words "katharos" meaning "pure" and "hekatos" meaning "each of the two." The name Katarzyna first appeared in Poland in the 12th century, brought by the influence of the Latin Church.
The earliest recorded example of the name Kasia dates back to the 15th century, when it was used as a shortened form of Katarzyna among Polish nobility and commoners alike. One of the earliest known bearers of the name Kasia was Kasia Bełska, a Polish noblewoman born in the late 15th century, who was renowned for her philanthropic work and support for the arts.
Throughout history, several notable women have borne the name Kasia. One of the most famous was Kasia Grochowska (1939-2018), a Polish actress and theater director who was widely acclaimed for her performances in both classical and contemporary plays. Another notable Kasia was Kasia Łuniewska (1947-2021), a Polish singer and songwriter who rose to prominence in the 1970s and became known for her unique blend of folk and rock music.
In the field of sports, Kasia Cichocka (born 1981) is a Polish professional tennis player who has won several titles on the WTA Tour and represented Poland in the Fed Cup. Kasia Wawrzak (born 1985) is a former Polish professional volleyball player who played as a middle blocker for the Polish national team and won numerous medals in international competitions.
One of the earliest recorded literary references to the name Kasia can be found in the 16th-century Polish poetry collection "Fraszki" by Jan Kochanowski, where the name is mentioned in several poems celebrating the beauty and virtues of a woman named Kasia.
People
Kasia + last name combinations
How many people share a full name with Kasia as the first name? Click a combination below to see the estimate, or search any pairing.
Related
Other names starting with K
Other first names starting with K with a similar number of bearers.
FAQ
Kasia: questions and answers
How many people in the U.S. are named Kasia?
Name Census puts the figure at roughly 1,648 living Americans. We arrive at this by taking every SSA birth registration for Kasia going back to 1880 and adjusting each cohort for expected survival using CDC actuarial life tables. The result is an age-weighted living-bearer count, not a raw birth total. That works out to about 1 in 207,982 US residents.
Is Kasia a common name?
We classify Kasia as "Rare". It ranks above 92.9% of all first names in the SSA dataset by living bearers. Across the full history of the data, 1,702 babies have been registered with this name.
When was Kasia most popular?
The single biggest year for Kasia was 2002, when 71 babies received the name. The fact that the average living Kasia is about 26 years old gives you a rough sense of which era contributed the most bearers who are still alive today.
Is Kasia a female name?
Yes, 100.0% of people registered as Kasia in the SSA data are female. You can see the full per-sex comparison in the gender distribution section above, which includes the latest year rank, birth count, and peak year for each sex.
Where does this data come from?
First-name figures come from the Social Security Administration's national baby name files, which cover every name on a birth certificate from 1880 to 2024. Living-bearer estimates layer in CDC actuarial life tables broken out by sex to account for mortality. The population baseline (342,754,338) is the Census Bureau's latest national estimate. You can read the full calculation on our methodology page.