2000
#138,741
National surname rank
Recorded bearers 111
First available Census row
Per 100,000 0.04
Very Rare Last name
Kaszowski
A Polish surname likely derived from the word "kasza" meaning "groats" or "gruel".
According to the 2020 US Census Bureau surname tables, roughly 112 Americans carry the last name Kaszowski. That puts it at #156,269 in the national surname ranking, appearing at a frequency of 0.03 per 100,000 people (about 1 in 3,060,307 residents).
This page is the full Name Census profile for the Kaszowski 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
112
1 in 3,060,307
Census rank
#156,269
2020 decennial data
Per 100,000
0.0
Frequency rate
Recorded bearers
98
very rare in the US
Popularity narrative
The Census Bureau recorded 98 bearers of the surname Kaszowski in its 2020 decennial surname file. At a rate of 0.03 per 100,000 residents, it holds the 156269th position in the national surname ranking.
Among Census respondents with the surname Kaszowski, the largest self-reported group is White at 96.9%. The next largest groups are Hispanic (2.0%) and Two or More Races (1.0%).
Origin
Meaning and origin of Kaszowski
The surname Kaszowski is of Polish origin and traces its roots back to the late medieval period. It is derived from the Polish word "kaszowy," which means "oatmeal" or "porridge." The name likely originated as a descriptive surname, referring to someone who worked with or sold oatmeal or porridge.
One of the earliest recorded instances of the name Kaszowski can be found in the Akta Grodzkie, a collection of court records from the 15th century. In these records, a person named Jan Kaszowski is mentioned in connection with a land dispute in the town of Lublin.
During the 16th and 17th centuries, the Kaszowski name appears in various historical documents and registers from various regions of Poland. For example, in 1612, a Stanislaw Kaszowski is recorded as a landowner in the village of Krasne, near the city of Krakow.
In the 18th century, Kaszowski became a more widespread surname, with families bearing this name residing in various parts of Poland. One notable individual from this period was Franciszek Kaszowski (1717-1785), a Catholic priest and theologian who served as a professor at the University of Krakow.
Another prominent figure with the surname Kaszowski was Józef Kaszowski (1818-1893), a Polish politician and writer who played an active role in the Polish independence movement. He was a member of the Polish National Government during the January Uprising against Russian rule in the 1860s.
In the 19th century, the Kaszowski surname also spread to other parts of Europe, including Germany and Austria, as Polish families migrated to these regions. One notable bearer of the name from this period was Karol Kaszowski (1857-1935), a Polish-German architect who designed several notable buildings in Berlin and other German cities.
Throughout its history, the Kaszowski surname has been associated with various places and locations in Poland. For instance, the village of Kaszów in the Świętokrzyskie Voivodeship is believed to be derived from the same root as the surname, suggesting a possible connection between the name and this particular place.
While the surname Kaszowski is not as common today as it once was, it continues to be found among Polish families and communities, serving as a reminder of the rich heritage and history associated with this name.
Demographics
Ancestry and ethnicity for Kaszowski
Among Census respondents with the surname Kaszowski, the largest self-reported group is White at 96.9%. The next largest groups are Hispanic (2.0%) and Two or More Races (1.0%).
The bar chart below shows how Kaszowski 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 Kaszowski surname at the time of the 2020 Census, not any inherent property of the name itself.
- White96.9% · 95
- Hispanic or Latino2.0% · 2
- Two or more races1.0% · 1
Timeline
Historical Census data for Kaszowski
Kaszowski 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
#146,201
National surname rank
Recorded bearers 113
+2 bearers (+1.8%)
Per 100,000 0.04
Rank movement Down 7,460 places
2020
#156,269
National surname rank
Recorded bearers 98
-15 bearers (-13.3%)
Per 100,000 0.03
Rank movement Down 10,068 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2000 | #138,741 | 111 | 0.04 | First available Census row | First available Census row |
| 2010 | #146,201 | 113 | 0.04 | +2 bearers (+1.8%) | Down 7,460 places |
| 2020 | #156,269 | 98 | 0.03 | -15 bearers (-13.3%) | Down 10,068 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 Kaszowski 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 | #146,201 | #156,269 | -6.9% |
| Count | 113 | 98 | -13.3% |
| Per 100K | 0.04 | 0.03 | -18.0% |
Between the 2010 and 2020 Census, the number of Kaszowski bearers went from 113 to 98 (-13.3% change). The surname moved down 10,068 positions in the national ranking, going from #146,201 to #156,269.
FAQ
Kaszowski surname: questions and answers
How many people in the U.S. have the surname Kaszowski?
Name Census estimates that about 112 living Americans carry the surname Kaszowski. Using the current population baseline, that works out to roughly 1 in 3,060,307 residents.
How common is Kaszowski?
Kaszowski ranks #156,269 in the 2020 Census surname tables and is classified on this site as "Very Rare." The Census recorded the name at a frequency of 0.03 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 98 people with the surname Kaszowski. That is different from the site's living-bearer estimate (112), which projects the surname's present-day count by applying the Census frequency rate to the current U.S. population.
What does 0.03 per 100,000 actually mean?
It is the Census Bureau's normalized frequency measure. A rate of 0.03 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 Kaszowski.
Has Kaszowski become more or less common over time?
Between 2010 and 2020, the surname Kaszowski went from 113 recorded bearers to 98. That is a decrease of 15 (-13.3%). In the national ranking it fell from #146,201 to #156,269.
What does the Census say about the background of Kaszowski?
Among Census respondents with the surname Kaszowski, the largest self-reported group is White at 96.9%. The next largest groups are Hispanic (2.0%) and Two or More Races (1.0%). 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 Kaszowski in the 2020 Census, accounting for 96.9% (95 people in the source table).
What is the full ancestry breakdown?
Kaszowski appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are White (96.9%), Hispanic (2.0%), Two or More Races (1.0%). 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 Kaszowski (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 Kaszowski mean?
A Polish surname likely derived from the word "kasza" meaning "groats" or "gruel". 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 Kaszowski (0.03 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 have the surname Kaszowski?
HowManyOfMe.org, our sister site, answers that with the living-bearer count in one glance.