2000
#124,872
National surname rank
Recorded bearers 127
First available Census row
Per 100,000 0.05
Very Rare Last name
Koscik
A Polish surname derived from the word "kos" meaning scythe, likely referring to an ancestor's occupation as a scythe maker or user.
According to the 2020 US Census Bureau surname tables, roughly 124 Americans carry the last name Koscik. That puts it at #150,935 in the national surname ranking, appearing at a frequency of 0.04 per 100,000 people (about 1 in 2,764,148 residents).
This page is the full Name Census profile for the Koscik surname. You will find the Census Bureau frequency data, a multi-census history view, an ancestry and ethnicity breakdown based on self-reported demographics, the name's meaning and origin where available, and answers to the most common questions people ask about this surname.
Bearers in the US
124
1 in 2,764,148
Census rank
#150,935
2020 decennial data
Per 100,000
0.0
Frequency rate
Recorded bearers
108
very rare in the US
Popularity narrative
The Census Bureau recorded 108 bearers of the surname Koscik in its 2020 decennial surname file. At a rate of 0.04 per 100,000 residents, it holds the 150935th position in the national surname ranking.
Among Census respondents with the surname Koscik, the largest self-reported group is White at 97.2%. The next largest groups are Two or More Races (1.9%) and American Indian/Alaska Native (0.9%).
Origin
Meaning and origin of Koscik
The surname Koscik is of Polish origin and dates back to the early medieval period. It is derived from the Polish word "kościec," which means "bone" or "skeleton." The name likely originated as a descriptive nickname for someone with a slender or bony appearance.
The earliest recorded instances of the Koscik name can be found in Polish parish records and court documents from the 14th and 15th centuries. These records often mention individuals with the name residing in the southern regions of modern-day Poland, particularly in the areas around Krakow and Silesia.
One notable early bearer of the Koscik name was Jan Koscik, a Polish nobleman who lived in the late 15th century and served as a military commander during the Polish-Teutonic Wars. His name is mentioned in several historical accounts of the time, including chronicles written by the renowned Polish historian Jan Długosz.
In the 16th century, the Koscik surname also appeared in records from the town of Bielsko-Biała, located in southern Poland near the border with the Czech Republic. This area was home to a prominent Koscik family who owned land and held influential positions in the local community.
Over the centuries, various spelling variations of the Koscik name emerged, including Kościk, Koscek, and Kośćik. These variations likely stemmed from regional dialects and differences in pronunciation or record-keeping practices.
Another notable figure bearing the Koscik name was Stanisław Koscik, a Polish Renaissance poet and humanist who lived in the late 16th century. His collection of poems, published in 1589, is considered one of the earliest examples of Polish baroque literature.
In the 18th century, the Koscik surname gained recognition through the work of Józef Koscik, a renowned Polish architect and urban planner. He was responsible for the design and construction of several important buildings and public spaces in the city of Warsaw, including the Church of the Holy Cross and the Palace of the Four Winds.
As the Koscik name spread throughout Poland and beyond, it was also associated with various place names and geographical locations. For instance, the village of Kościki in central Poland is believed to have derived its name from the Koscik surname, possibly indicating an early settlement or landholding by members of the family.
Other notable individuals bearing the Koscik surname include Andrzej Koscik, a Polish mathematician and logician who made significant contributions to the field of set theory in the early 20th century, and Helena Koscik, a celebrated Polish opera singer who performed at prestigious venues across Europe in the late 19th and early 20th centuries.
Demographics
Ancestry and ethnicity for Koscik
Among Census respondents with the surname Koscik, the largest self-reported group is White at 97.2%. The next largest groups are Two or More Races (1.9%) and American Indian/Alaska Native (0.9%).
The bar chart below shows how Koscik bearers 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 surname, the Bureau suppresses the figure to protect individual privacy, which is why some names show fewer than six slices.
Percentages are shown for every Census year so the breakdown stays comparable over time. When the source file also includes raw headcounts, Name Census shows those alongside the percentages in the legend.
Keep in mind that these are self-reported numbers. A person's surname does not determine their race or ethnicity, and the distribution you see here reflects the specific population who happened to carry the Koscik surname at the time of the 2020 Census, not any inherent property of the name itself.
- White97.2% · 105
- Two or more races1.9% · 2
- American Indian and Alaska Native0.9% · 1
Timeline
Historical Census data for Koscik
Koscik appears in 3 published Census surname files: 2000, 2010, 2020. The cards below show how the name's rank and bearer count changed across each release.
2010
#149,395
National surname rank
Recorded bearers 110
-17 bearers (-13.4%)
Per 100,000 0.04
Rank movement Down 24,523 places
2020
#150,935
National surname rank
Recorded bearers 108
-2 bearers (-1.8%)
Per 100,000 0.04
Rank movement Down 1,540 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2000 | #124,872 | 127 | 0.05 | First available Census row | First available Census row |
| 2010 | #149,395 | 110 | 0.04 | -17 bearers (-13.4%) | Down 24,523 places |
| 2020 | #150,935 | 108 | 0.04 | -2 bearers (-1.8%) | Down 1,540 places |
For 2020, the Census Bureau published race and Hispanic-origin columns as counts rather than percentages. Name Census converts those counts back into shares so the ancestry section stays comparable with the older surname files.
Year on year
2010 vs 2020 Census
How has the Koscik surname changed between Census years? The chart shows bearer count side by side, and the table compares rank, count, and frequency.
Census year comparison
20102020
| Metric | 2010 | 2020 | Change |
|---|---|---|---|
| Rank | #149,395 | #150,935 | -1.0% |
| Count | 110 | 108 | -1.8% |
| Per 100K | 0.04 | 0.04 | -9.7% |
Between the 2010 and 2020 Census, the number of Koscik bearers went from 110 to 108 (-1.8% change). The surname moved down 1,540 positions in the national ranking, going from #149,395 to #150,935.
FAQ
Koscik surname: questions and answers
How many people in the U.S. have the surname Koscik?
Name Census estimates that about 124 living Americans carry the surname Koscik. Using the current population baseline, that works out to roughly 1 in 2,764,148 residents.
How common is Koscik?
Koscik ranks #150,935 in the 2020 Census surname tables and is classified on this site as "Very Rare." The Census recorded the name at a frequency of 0.04 per 100,000 residents, which is about 0 people out of every 100,000.
How many people with this surname were counted in the Census?
The raw 2020 Census file counted 108 people with the surname Koscik. That is different from the site's living-bearer estimate (124), which projects the surname's present-day count by applying the Census frequency rate to the current U.S. population.
What does 0.04 per 100,000 actually mean?
It is the Census Bureau's normalized frequency measure. A rate of 0.04 per 100,000 means that if you picked a random group of 100,000 U.S. residents, you would expect about 0 of them to have the surname Koscik.
Has Koscik become more or less common over time?
Between 2010 and 2020, the surname Koscik went from 110 recorded bearers to 108. That is a decrease of 2 (-1.8%). In the national ranking it fell from #149,395 to #150,935.
What does the Census say about the background of Koscik?
Among Census respondents with the surname Koscik, the largest self-reported group is White at 97.2%. The next largest groups are Two or More Races (1.9%) and American Indian/Alaska Native (0.9%). These figures come from the 2020 Census Bureau surname tables, based on how respondents described their own race and ethnicity.
Which group reports this surname most often?
White is the largest self-reported group for the surname Koscik in the 2020 Census, accounting for 97.2% (105 people in the source table).
What is the full ancestry breakdown?
Koscik appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are White (97.2%), Two or More Races (1.9%), American Indian/Alaska Native (0.9%). For 2020, the source file also published raw headcounts for each group, which is why this page can show both percentages and counts in the ancestry section.
Is this page using the latest Census data?
Yes. This page is using the latest surname file currently loaded on Name Census, which is 2020. The historical section above also keeps any older Census surname entries we have for Koscik (2000, 2010, 2020).
Does the Census include every surname?
No. The Census Bureau only publishes surnames that appeared at least 100 times in a given decennial Census. That means very rare surnames are excluded entirely, and a surname can appear in one Census release but disappear from a later one if it falls below the reporting threshold.
Why don't the ancestry percentages always add up to exactly 100%?
There are two main reasons: rounding and suppression. The Census Bureau rounds published values, and it may suppress very small cells to protect privacy. For 2020, the Bureau also published raw group counts rather than direct percentages, so Name Census converts those counts back into shares for comparability across census years.
What does Koscik mean?
A Polish surname derived from the word "kos" meaning scythe, likely referring to an ancestor's occupation as a scythe maker or user. The fuller origin note on this page goes into more detail.
Where does the surname data come from?
All surname statistics on Name Census are drawn from the US Census Bureau's decennial surname frequency tables. These files list every surname that appeared 100 or more times in the 2020 Census, along with a count, a per-100,000 rate, and a self-reported demographic breakdown. You can read the full explanation on our methodology page.
How does Name Census estimate living bearers?
For surnames, Name Census does not age cohorts the way it does for first names. Instead, it takes the Census Bureau's published frequency for Koscik (0.04 per 100,000) and applies that rate to the current U.S. resident population to estimate how many living Americans have the surname today.
How many people share the surname Koscik?
For a faster, more casual read, check HowManyOfMe.org — our sister site built around that single question.