2000
#135,837
National surname rank
Recorded bearers 114
First available Census row
Per 100,000 0.04
Very Rare Last name
Byczkowski
A Polish surname derived from the word "byczek" meaning "little bull" or "calf".
According to the 2020 US Census Bureau surname tables, roughly 127 Americans carry the last name Byczkowski. That puts it at #148,665 in the national surname ranking, appearing at a frequency of 0.04 per 100,000 people (about 1 in 2,698,853 residents).
This page is the full Name Census profile for the Byczkowski 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
127
1 in 2,698,853
Census rank
#148,665
2020 decennial data
Per 100,000
0.0
Frequency rate
Recorded bearers
111
very rare in the US
Popularity narrative
The Census Bureau recorded 111 bearers of the surname Byczkowski in its 2020 decennial surname file. At a rate of 0.04 per 100,000 residents, it holds the 148665th position in the national surname ranking.
Among Census respondents with the surname Byczkowski, the largest self-reported group is White at 91.0%. The next largest groups are Hispanic (6.3%) and Black (1.8%).
Origin
Meaning and origin of Byczkowski
The surname Byczkowski has its origins in Poland, dating back to the early medieval period. It is derived from the Polish word "byczek," which means "little bull" or "young bull." The name likely originated as a nickname or descriptive term for someone who worked with cattle or had a particular physical resemblance to a bull.
The earliest recorded instances of the name Byczkowski can be found in historical documents from the 14th and 15th centuries in the regions of Greater Poland and Pomerania. It was commonly spelled as "Byczkowski" or "Byczkouski" in these early records.
In the 16th century, a nobleman named Jan Byczkowski was mentioned in the annals of the town of Gniezno, which was a prominent religious and cultural center in medieval Poland. He was a landowner and influential figure in the local community.
During the 17th century, the name Byczkowski appeared in the records of the city of Poznan, where a merchant named Maciej Byczkowski was noted for his successful trading ventures and philanthropic contributions to the city's development.
In the 18th century, a Polish writer and poet named Franciszek Byczkowski gained recognition for his works inspired by the Enlightenment era. He was born in 1742 in the village of Koszuty and his poetic works were widely circulated in literary circles of the time.
Another notable figure with the surname Byczkowski was Stanislaw Byczkowski, a military commander who fought in the Polish-Lithuanian Commonwealth's wars against Sweden and Russia in the late 17th century. He was born in 1657 in the town of Ostrów Wielkopolski and gained recognition for his bravery and strategic leadership on the battlefield.
In the 19th century, the name Byczkowski was associated with several prominent academics and scholars. One such individual was Józef Byczkowski, a linguist and professor at the University of Warsaw, who made significant contributions to the study of Slavic languages. He was born in 1818 in the town of Kalisz.
These are just a few examples of the historical figures who bore the surname Byczkowski, showcasing its deep roots in Polish history and culture.
Demographics
Ancestry and ethnicity for Byczkowski
Among Census respondents with the surname Byczkowski, the largest self-reported group is White at 91.0%. The next largest groups are Hispanic (6.3%) and Black (1.8%).
The bar chart below shows how Byczkowski 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 Byczkowski surname at the time of the 2020 Census, not any inherent property of the name itself.
- White91.0% · 101
- Hispanic or Latino6.3% · 7
- Black or African American1.8% · 2
- Two or more races0.9% · 1
Timeline
Historical Census data for Byczkowski
Byczkowski 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
#144,141
National surname rank
Recorded bearers 115
+1 bearers (+0.9%)
Per 100,000 0.04
Rank movement Down 8,304 places
2020
#148,665
National surname rank
Recorded bearers 111
-4 bearers (-3.5%)
Per 100,000 0.04
Rank movement Down 4,524 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2000 | #135,837 | 114 | 0.04 | First available Census row | First available Census row |
| 2010 | #144,141 | 115 | 0.04 | +1 bearers (+0.9%) | Down 8,304 places |
| 2020 | #148,665 | 111 | 0.04 | -4 bearers (-3.5%) | Down 4,524 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 Byczkowski 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 | #144,141 | #148,665 | -3.1% |
| Count | 115 | 111 | -3.5% |
| Per 100K | 0.04 | 0.04 | -7.2% |
Between the 2010 and 2020 Census, the number of Byczkowski bearers went from 115 to 111 (-3.5% change). The surname moved down 4,524 positions in the national ranking, going from #144,141 to #148,665.
FAQ
Byczkowski surname: questions and answers
How many people in the U.S. have the surname Byczkowski?
Name Census estimates that about 127 living Americans carry the surname Byczkowski. Using the current population baseline, that works out to roughly 1 in 2,698,853 residents.
How common is Byczkowski?
Byczkowski ranks #148,665 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 111 people with the surname Byczkowski. That is different from the site's living-bearer estimate (127), 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 Byczkowski.
Has Byczkowski become more or less common over time?
Between 2010 and 2020, the surname Byczkowski went from 115 recorded bearers to 111. That is a decrease of 4 (-3.5%). In the national ranking it fell from #144,141 to #148,665.
What does the Census say about the background of Byczkowski?
Among Census respondents with the surname Byczkowski, the largest self-reported group is White at 91.0%. The next largest groups are Hispanic (6.3%) and Black (1.8%). 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 Byczkowski in the 2020 Census, accounting for 91.0% (101 people in the source table).
What is the full ancestry breakdown?
Byczkowski appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are White (91.0%), Hispanic (6.3%), Black (1.8%). 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 Byczkowski (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 Byczkowski mean?
A Polish surname derived from the word "byczek" meaning "little bull" or "calf". 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 Byczkowski (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 Byczkowski?
For a quick modern estimate, our sister site HowManyOfMe.org answers that in one glance, with the living-bearer count front and centre.