2000
#132,259
National surname rank
Recorded bearers 118
First available Census row
Per 100,000 0.04
Very Rare Last name
Kacprowicz
A Polish surname derived from the name Kasper, possibly meaning "son of Kasper".
According to the 2020 US Census Bureau surname tables, roughly 135 Americans carry the last name Kacprowicz. That puts it at #143,511 in the national surname ranking, appearing at a frequency of 0.04 per 100,000 people (about 1 in 2,538,921 residents).
This page is the full Name Census profile for the Kacprowicz 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
135
1 in 2,538,921
Census rank
#143,511
2020 decennial data
Per 100,000
0.0
Frequency rate
Recorded bearers
118
very rare in the US
Popularity narrative
The Census Bureau recorded 118 bearers of the surname Kacprowicz in its 2020 decennial surname file. At a rate of 0.04 per 100,000 residents, it holds the 143511th position in the national surname ranking.
Among Census respondents with the surname Kacprowicz, the largest self-reported group is White at 93.2%. The next largest groups are Black (1.7%) and Hispanic (1.7%).
Origin
Meaning and origin of Kacprowicz
The surname Kacprowicz originated in Poland during the medieval period, likely in the 13th or 14th century. It derives from the Polish personal name Kacper, which is the equivalent of the English name Casper or Jasper. The suffix "-owicz" was a common Slavic patronymic ending indicating the name belonged to the son or descendant of Kacper.
The name Kacper itself has origins tracing back to the ancient Persian name Gaspar or Caspar, one of the three wise men or biblical Magi who visited the infant Jesus according to Christian tradition. The oldest known record of the Kacprowicz surname appears in a 1456 parish register from the village of Skaryszew, located in central Poland.
One of the earliest documented individuals with the Kacprowicz name was Jan Kacprowicz, born around 1540 in the town of Wloclawek. He was a respected merchant and landowner who played a role in the local government during the late 16th century. Another notable early bearer of the name was Tomasz Kacprowicz, a military officer who fought against the Swedish invasion of Poland in the 1650s during the Deluge.
In the 18th century, the Kacprowicz family established itself in the region of Galicia, which at the time was part of the Austro-Hungarian Empire. Franciszek Kacprowicz, born in 1775, was a prominent lawyer and judge in the city of Lviv (known then as Lemberg). His son, Ignacy Kacprowicz (1810-1892), became a renowned professor of mathematics at the University of Lviv.
Another notable figure was Kazimierz Kacprowicz (1887-1966), a Polish engineer and inventor who made significant contributions to the development of early television technology. He was born in the town of Zbaraz, which was then part of the Russian Empire.
Throughout its history, the Kacprowicz surname has maintained strong ties to its Polish roots, with many families tracing their lineage back to the central and eastern regions of the country. While not among the most common Polish surnames, it has persisted for centuries and can be found in various historical records and documents spanning multiple eras.
Demographics
Ancestry and ethnicity for Kacprowicz
Among Census respondents with the surname Kacprowicz, the largest self-reported group is White at 93.2%. The next largest groups are Black (1.7%) and Hispanic (1.7%).
The bar chart below shows how Kacprowicz 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 Kacprowicz surname at the time of the 2020 Census, not any inherent property of the name itself.
- White93.2% · 110
- Black or African American1.7% · 2
- Hispanic or Latino1.7% · 2
- American Indian and Alaska Native1.7% · 2
- Two or more races1.7% · 2
Timeline
Historical Census data for Kacprowicz
Kacprowicz 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
#131,379
National surname rank
Recorded bearers 129
+11 bearers (+9.3%)
Per 100,000 0.04
Rank movement Up 880 places
2020
#143,511
National surname rank
Recorded bearers 118
-11 bearers (-8.5%)
Per 100,000 0.04
Rank movement Down 12,132 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2000 | #132,259 | 118 | 0.04 | First available Census row | First available Census row |
| 2010 | #131,379 | 129 | 0.04 | +11 bearers (+9.3%) | Up 880 places |
| 2020 | #143,511 | 118 | 0.04 | -11 bearers (-8.5%) | Down 12,132 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 Kacprowicz 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 | #131,379 | #143,511 | -9.2% |
| Count | 129 | 118 | -8.5% |
| Per 100K | 0.04 | 0.04 | -1.3% |
Between the 2010 and 2020 Census, the number of Kacprowicz bearers went from 129 to 118 (-8.5% change). The surname moved down 12,132 positions in the national ranking, going from #131,379 to #143,511.
FAQ
Kacprowicz surname: questions and answers
How many people in the U.S. have the surname Kacprowicz?
Name Census estimates that about 135 living Americans carry the surname Kacprowicz. Using the current population baseline, that works out to roughly 1 in 2,538,921 residents.
How common is Kacprowicz?
Kacprowicz ranks #143,511 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 118 people with the surname Kacprowicz. That is different from the site's living-bearer estimate (135), 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 Kacprowicz.
Has Kacprowicz become more or less common over time?
Between 2010 and 2020, the surname Kacprowicz went from 129 recorded bearers to 118. That is a decrease of 11 (-8.5%). In the national ranking it fell from #131,379 to #143,511.
What does the Census say about the background of Kacprowicz?
Among Census respondents with the surname Kacprowicz, the largest self-reported group is White at 93.2%. The next largest groups are Black (1.7%) and Hispanic (1.7%). 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 Kacprowicz in the 2020 Census, accounting for 93.2% (110 people in the source table).
What is the full ancestry breakdown?
Kacprowicz appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are White (93.2%), Black (1.7%), Hispanic (1.7%). 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 Kacprowicz (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 Kacprowicz mean?
A Polish surname derived from the name Kasper, possibly meaning "son of Kasper". 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 Kacprowicz (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 are called Kacprowicz?
See how many people have the last name Kacprowicz on HowManyOfMe.org, our sister site built around that single question.