2000
#29,040
National surname rank
Recorded bearers 769
First available Census row
Per 100,000 0.29
Very Rare Last name
Krupski
A Polish surname derived from the word "krup," meaning "groat" or "grist."
According to the 2020 US Census Bureau surname tables, roughly 839 Americans carry the last name Krupski. That puts it at #33,503 in the national surname ranking, appearing at a frequency of 0.24 per 100,000 people (about 1 in 408,527 residents).
This page is the full Name Census profile for the Krupski 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
839
1 in 408,527
Census rank
#33,503
2020 decennial data
Per 100,000
0.2
Frequency rate
Recorded bearers
732
very rare in the US
Popularity narrative
The Census Bureau recorded 732 bearers of the surname Krupski in its 2020 decennial surname file. At a rate of 0.24 per 100,000 residents, it holds the 33503rd position in the national surname ranking.
Among Census respondents with the surname Krupski, the largest self-reported group is White at 97.1%. The next largest groups are Two or More Races (1.5%) and Hispanic (1.2%).
Origin
Meaning and origin of Krupski
The surname Krupski is of Polish origin, emerging in the 16th century. It is believed to be derived from the Polish word "krup," which means "groats" or crushed grain. This indicates that the name likely originated from an area or region known for its grain production or mills.
One of the earliest recorded instances of the name Krupski can be found in the Akta Grodzkie, a collection of court records from the 16th and 17th centuries in the Polish-Lithuanian Commonwealth. In 1568, a document mentions a certain Jan Krupski from the town of Tarnów.
The name Krupski can also be traced back to the village of Krupy, located in the Masovian Voivodeship of central Poland. It is possible that some early bearers of the name hailed from this area, and the surname derived from the place name itself.
In the 17th century, a notable figure with the surname Krupski was Jan Krupski (1630-1692), a Polish-Lithuanian painter and engraver known for his religious works and portraits. His etchings and engravings can be found in collections across Europe.
Another prominent individual was Franciszek Krupski (1755-1826), a Polish nobleman and politician who served as a deputy to the Great Sejm in the late 18th century. He played a role in the drafting of the Polish Constitution of 1791.
During the 19th century, Wacław Krupski (1805-1880) was a Polish military officer and revolutionary who participated in the November Uprising against the Russian Empire in 1830-1831. He later emigrated to France and published several works on military tactics and strategy.
In the field of literature, Józef Krupski (1819-1885) was a Polish poet and writer who penned numerous works in the Romantic style, including the epic poem "Mogiła" (The Grave).
Another notable figure was Władysław Krupski (1877-1941), a Polish architect and engineer who designed numerous buildings and structures in Warsaw and other Polish cities in the early 20th century, contributing significantly to the architectural landscape of the time.
Demographics
Ancestry and ethnicity for Krupski
Among Census respondents with the surname Krupski, the largest self-reported group is White at 97.1%. The next largest groups are Two or More Races (1.5%) and Hispanic (1.2%).
The bar chart below shows how Krupski 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 Krupski surname at the time of the 2020 Census, not any inherent property of the name itself.
- White97.1% · 711
- Two or more races1.5% · 11
- Hispanic or Latino1.2% · 9
- Black or African American0.1% · 1
Timeline
Historical Census data for Krupski
Krupski 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
#30,043
National surname rank
Recorded bearers 781
+12 bearers (+1.6%)
Per 100,000 0.26
Rank movement Down 1,003 places
2020
#33,503
National surname rank
Recorded bearers 732
-49 bearers (-6.3%)
Per 100,000 0.24
Rank movement Down 3,460 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2000 | #29,040 | 769 | 0.29 | First available Census row | First available Census row |
| 2010 | #30,043 | 781 | 0.26 | +12 bearers (+1.6%) | Down 1,003 places |
| 2020 | #33,503 | 732 | 0.24 | -49 bearers (-6.3%) | Down 3,460 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 Krupski 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 | #30,043 | #33,503 | -11.5% |
| Count | 781 | 732 | -6.3% |
| Per 100K | 0.26 | 0.24 | -5.8% |
Between the 2010 and 2020 Census, the number of Krupski bearers went from 781 to 732 (-6.3% change). The surname moved down 3,460 positions in the national ranking, going from #30,043 to #33,503.
FAQ
Krupski surname: questions and answers
How many people in the U.S. have the surname Krupski?
Name Census estimates that about 839 living Americans carry the surname Krupski. Using the current population baseline, that works out to roughly 1 in 408,527 residents.
How common is Krupski?
Krupski ranks #33,503 in the 2020 Census surname tables and is classified on this site as "Very Rare." The Census recorded the name at a frequency of 0.24 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 732 people with the surname Krupski. That is different from the site's living-bearer estimate (839), which projects the surname's present-day count by applying the Census frequency rate to the current U.S. population.
What does 0.24 per 100,000 actually mean?
It is the Census Bureau's normalized frequency measure. A rate of 0.24 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 Krupski.
Has Krupski become more or less common over time?
Between 2010 and 2020, the surname Krupski went from 781 recorded bearers to 732. That is a decrease of 49 (-6.3%). In the national ranking it fell from #30,043 to #33,503.
What does the Census say about the background of Krupski?
Among Census respondents with the surname Krupski, the largest self-reported group is White at 97.1%. The next largest groups are Two or More Races (1.5%) and Hispanic (1.2%). 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 Krupski in the 2020 Census, accounting for 97.1% (711 people in the source table).
What is the full ancestry breakdown?
Krupski appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are White (97.1%), Two or More Races (1.5%), Hispanic (1.2%). 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 Krupski (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 Krupski mean?
A Polish surname derived from the word "krup," meaning "groat" or "grist." 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 Krupski (0.24 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 are called Krupski?
See how many people have the last name Krupski on HowManyOfMe.org, our sister site built around that single question.