Kacia
A Polish feminine diminutive of Katarzyna meaning "pure".
Name Census estimates that about 264 living Americans carry the first name Kacia. The name is used almost exclusively for girls. The average person named Kacia today is around 31 years old, and the year with the single highest number of Kacia births was 1990 (17 babies).
This page is the full Name Census profile for Kacia. 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.
For a British comparison, Name Census UK has a UK baby-name profile for Kacia with official rankings and popularity over time.
People living today
264
~ 1 in 1,298,312 Americans
Peak year
1990
17 babies that year
Average age
31
years old
2014 SSA rank
#17,784
Tracked since 1976
Census
Kacia in the 2020 Census
The 2020 Census recorded 354 people with the first name Kacia, which placed it at #26,327 in the published first-name tables. This is a snapshot of people who already had the name at the time of the Census.
The SSA sections elsewhere on this page answer a different question: how often parents gave the name to babies over time. The "people living today" figure on this page is different again: it is a current estimate built from SSA birth records and age-based survival rates, so the two numbers are not expected to match exactly.
2020 Census rank
#26,327
National first-name rank
People counted
354
354 in the published race/origin table
Per 100,000
0.1
People with this name in 2020
Largest reported group
White
50.0% of people with this name
Demographics
Ancestry and ethnicity for Kacia
In the 2020 Census race and Hispanic-origin table, the largest reported group for people named Kacia is White at 50.0%. The next largest groups are Black (26.3%) and Two or More Races (9.9%). These figures describe the people who had the name in 2020, not any inherent property of the name itself.
The bar chart below shows how people with the first name Kacia described their own race and ethnicity on the 2020 Census form. The Census Bureau groups responses into six broad categories: White, Black or African American, Hispanic or Latino, Asian and Pacific Islander, American Indian and Alaska Native, and Two or More Races. When a category has too few respondents for a given name, the Bureau suppresses the figure to protect individual privacy, which is why some names show fewer than six slices.
Percentages are shown so the breakdown is easy to read across every published category. Because the 2020 Census first-name file also includes raw headcounts for each group, Name Census can show those alongside the percentages in the legend and hover tooltip.
Keep in mind that these are self-reported numbers. A first name does not determine a person's race or ethnicity, and the distribution you see here reflects the specific population who happened to carry the name Kacia at the time of the 2020 Census, not any inherent property of the name itself.
- White50.0% · 177
- Black or African American26.3% · 93
- Two or more races9.9% · 35
- Hispanic or Latino7.3% · 26
- Asian and Pacific Islander4.8% · 17
- American Indian and Alaska Native1.7% · 6
Popularity
Kacia: popularity over time
The SSA tracks Kacia from the 1970s through to the 2010s, spanning 5 decades of birth certificate data. The biggest single decade for the name was the 1990s, with 95 total registrations. Usage has dropped considerably from its 1990s peak. The most recent decade brought in only a fraction of the registrations that the name once attracted.
Babies born per year
Decades
Kacia 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 Kacia during that decade, along with a combined total. This is useful for spotting eras where the name surged or retreated.
Geography
Where Kacias live
Origin
Meaning and history of Kacia
The name Kacia is a diminutive form of the Polish name Katarzyna, which is derived from the Greek name Aikaterine. The name Aikaterine itself is a combination of the Greek words "katharos" meaning "pure" and "katara" meaning "torture." It is believed to have originated in the 4th century CE.
The name Katarzyna was brought to Poland in the 10th century by missionaries who were spreading Christianity. Over time, it became a popular name in the region, and various diminutive forms like Kacia, Kasia, and Kaska emerged.
One of the earliest recorded instances of the name Kacia can be found in the 16th century Polish novel "The Adventures of the Valiant Knight Errant Don Quixote" by Miguel de Cervantes Saavedra, where a character named Kacia is mentioned.
Throughout history, several notable individuals have borne the name Kacia. One of the earliest was Kacia Mirecka (1480-1551), a Polish noblewoman and landowner who played a significant role in the development of the town of Mirecz.
Another notable figure was Kacia Gąsiorowska (1609-1677), a Polish poet and writer who is considered one of the foremost literary figures of the Polish Baroque period.
In the 18th century, Kacia Puławska (1718-1782) was a prominent Polish aristocrat and philanthropist who founded several schools and hospitals in the region of Puławy.
More recently, Kacia Kozłowska (1826-1892) was a Polish activist and educator who fought for women's rights and established several schools for girls in Warsaw.
Kacia Kowalska (1905-1989) was a Polish actress and singer who gained fame for her roles in numerous Polish films and theatrical productions in the mid-20th century.
While these are just a few examples, the name Kacia has been used by many notable individuals throughout Polish history, reflecting its deep roots and cultural significance in the region.
People
Kacia + last name combinations
How many people share a full name with Kacia 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
Kacia: questions and answers
How many people in the U.S. are named Kacia?
Name Census puts the figure at roughly 264 living Americans. We arrive at this by taking every SSA birth registration for Kacia 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 1,298,312 US residents.
Is Kacia a common name?
We classify Kacia as "Very Rare". It ranks above 77.7% of all first names in the SSA dataset by living bearers. Across the full history of the data, 274 babies have been registered with this name.
When was Kacia most popular?
The single biggest year for Kacia was 1990, when 17 babies received the name. The fact that the average living Kacia is about 31 years old gives you a rough sense of which era contributed the most bearers who are still alive today.
How common was Kacia in the 2020 Census?
The published 2020 Census first-name tables recorded 354 people with the name Kacia, or 0.12 per 100,000 residents. That placed it at #26,327 in the national Census ranking for first names.
Why is the Census count different from the living estimate?
Because they measure different things. The Census figure is a count of people who had the name Kacia in 2020. The living estimate aims to answer a current question instead: how many people with the name are alive today, based on SSA birth records and age-based survival rates. Since one number is a 2020 snapshot and the other is a present-day estimate, they are not expected to be identical.
What does the Census say about the gender split for Kacia?
In the 2020 Census sex table, Kacia appears almost entirely female. Of the 343 people counted with this name, 99.4% were female and only a very small share were male. The Census view is a snapshot of people living with the name in 2020, while the SSA section above tracks births across time.
What does the Census say about the background of people named Kacia?
In the 2020 Census race and Hispanic-origin table, the largest reported group for people named Kacia is White at 50.0%. The next largest groups are Black (26.3%) and Two or More Races (9.9%). These figures describe the people who had the name in 2020, not any inherent property of the name itself. The percentages in the chart above come from self-reported race and Hispanic-origin responses in the 2020 Census.
Which group reports the name Kacia most often in the Census?
White is the largest reported group for people named Kacia in the 2020 Census, accounting for 50.0% (177 people in the published table).
Why can the Census sex total and race total differ slightly?
The Census Bureau published separate 2020 tables for sex and for race/Hispanic origin, and the released figures can differ slightly because of privacy protection in the public files. That is why this page treats the gender section and the race/origin section as two related snapshots instead of forcing them into one identical total.
Does every first name have Census demographic data?
No. The public Census first-name release only includes names that met the Bureau's publication rules, so many rarer names in the SSA files have no Census demographic snapshot. When that happens, the SSA trend, gender history, and state sections still appear, but the 2020 Census demographic sections are omitted.
What does the SSA popularity chart show?
The chart tracks births, not the number of people alive with the name today. Each point shows how many babies were given the name Kacia in that year. That makes it useful for spotting when the name rose, peaked, or faded.
Is Kacia a female name?
Yes, 100.0% of people registered as Kacia 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.
Is Kacia still being used today?
Yes. The SSA still recorded Kacia in 2024, and the page above shows its latest-year rank where available. A name can be well past its peak and still remain in steady use, especially if it built up a large population over earlier decades.
Why can a name have a lot of living bearers even if it is not trendy now?
Because living-bearer counts and current baby-name popularity measure different things. A name like Kacia can build up a very large population over many decades, even if fewer parents are choosing it now than they did at its peak.
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.
How many Americans are named Kacia?
See how many Americans are named Kacia on HowManyOfMe.org, our sister site built around that single question.