2000
#121,058
National surname rank
Recorded bearers 132
First available Census row
Per 100,000 0.05
Very Rare Last name
Kaczur
A Polish occupational surname derived from the word "kaczka" meaning duck, referring to a duck-hunter or duck-keeper.
According to the 2020 US Census Bureau surname tables, roughly 136 Americans carry the last name Kaczur. That puts it at #142,788 in the national surname ranking, appearing at a frequency of 0.04 per 100,000 people (about 1 in 2,520,252 residents).
This page is the full Name Census profile for the Kaczur 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
136
1 in 2,520,252
Census rank
#142,788
2020 decennial data
Per 100,000
0.0
Frequency rate
Recorded bearers
119
very rare in the US
Popularity narrative
The Census Bureau recorded 119 bearers of the surname Kaczur in its 2020 decennial surname file. At a rate of 0.04 per 100,000 residents, it holds the 142788th position in the national surname ranking.
Among Census respondents with the surname Kaczur, the largest self-reported group is White at 95.8%. The next largest groups are Hispanic (3.4%) and Two or More Races (0.8%).
Origin
Meaning and origin of Kaczur
The surname "KACZUR" is of Polish origin, derived from the word "kaczor," meaning "drake" or "male duck" in the Polish language. This surname likely originated in the 14th or 15th century, during the height of the Polish-Lithuanian Commonwealth.
The name is believed to have originated in the central regions of Poland, particularly in the areas around the cities of Krakow and Warsaw. It may have been initially used as a nickname or descriptive name for someone associated with ducks, either as a hunter, farmer, or breeder.
One of the earliest recorded instances of the surname "KACZUR" can be found in the Akta Metrykalne, a collection of parish records and vital records from various parishes in Poland, dating back to the 16th century. It is likely that the name appeared in these records as early as the late 1500s or early 1600s.
In the 17th century, a notable bearer of the surname "KACZUR" was Jan Kaczur (1592-1667), a Polish nobleman and military officer who served in the Polish-Lithuanian Commonwealth's armed forces during the Smolensk War against Russia.
Another historical figure with this surname was Michał Kaczur (1718-1793), a Polish writer and philosopher who published several works on ethics and morality during the Age of Enlightenment in Poland.
During the 19th century, the surname "KACZUR" gained recognition through the works of Władysław Kaczur (1826-1896), a Polish painter and art teacher who specialized in portrait and landscape paintings.
In the early 20th century, Józef Kaczur (1892-1962) was a prominent Polish architect and urban planner who contributed to the reconstruction efforts in Warsaw after World War II.
Another notable bearer of the surname "KACZUR" was Stanisław Kaczur (1918-2004), a Polish writer and poet who published several collections of poetry and prose works, often exploring themes of national identity and the human condition.
Demographics
Ancestry and ethnicity for Kaczur
Among Census respondents with the surname Kaczur, the largest self-reported group is White at 95.8%. The next largest groups are Hispanic (3.4%) and Two or More Races (0.8%).
The bar chart below shows how Kaczur 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 Kaczur surname at the time of the 2020 Census, not any inherent property of the name itself.
- White95.8% · 114
- Hispanic or Latino3.4% · 4
- Two or more races0.8% · 1
Timeline
Historical Census data for Kaczur
Kaczur 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
#133,048
National surname rank
Recorded bearers 127
-5 bearers (-3.8%)
Per 100,000 0.04
Rank movement Down 11,990 places
2020
#142,788
National surname rank
Recorded bearers 119
-8 bearers (-6.3%)
Per 100,000 0.04
Rank movement Down 9,740 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2000 | #121,058 | 132 | 0.05 | First available Census row | First available Census row |
| 2010 | #133,048 | 127 | 0.04 | -5 bearers (-3.8%) | Down 11,990 places |
| 2020 | #142,788 | 119 | 0.04 | -8 bearers (-6.3%) | Down 9,740 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 Kaczur 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 | #133,048 | #142,788 | -7.3% |
| Count | 127 | 119 | -6.3% |
| Per 100K | 0.04 | 0.04 | -0.5% |
Between the 2010 and 2020 Census, the number of Kaczur bearers went from 127 to 119 (-6.3% change). The surname moved down 9,740 positions in the national ranking, going from #133,048 to #142,788.
FAQ
Kaczur surname: questions and answers
How many people in the U.S. have the surname Kaczur?
Name Census estimates that about 136 living Americans carry the surname Kaczur. Using the current population baseline, that works out to roughly 1 in 2,520,252 residents.
How common is Kaczur?
Kaczur ranks #142,788 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 119 people with the surname Kaczur. That is different from the site's living-bearer estimate (136), 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 Kaczur.
Has Kaczur become more or less common over time?
Between 2010 and 2020, the surname Kaczur went from 127 recorded bearers to 119. That is a decrease of 8 (-6.3%). In the national ranking it fell from #133,048 to #142,788.
What does the Census say about the background of Kaczur?
Among Census respondents with the surname Kaczur, the largest self-reported group is White at 95.8%. The next largest groups are Hispanic (3.4%) and Two or More Races (0.8%). 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 Kaczur in the 2020 Census, accounting for 95.8% (114 people in the source table).
What is the full ancestry breakdown?
Kaczur appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are White (95.8%), Hispanic (3.4%), Two or More Races (0.8%). 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 Kaczur (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 Kaczur mean?
A Polish occupational surname derived from the word "kaczka" meaning duck, referring to a duck-hunter or duck-keeper. 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 Kaczur (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 Americans have the surname Kaczur?
For a quick modern estimate, our sister site HowManyOfMe.org answers that in one glance, with the living-bearer count front and centre.