2000
#10,821
National surname rank
Recorded bearers 2,704
First available Census row
Per 100,000 1.00
Rare Last name
Kowalewski
Derived from the Polish word "kowal" meaning "blacksmith," indicating an ancestor's occupation.
According to the 2020 US Census Bureau surname tables, roughly 2,894 Americans carry the last name Kowalewski. That puts it at #11,856 in the national surname ranking, appearing at a frequency of 0.84 per 100,000 people (about 1 in 118,436 residents).
This page is the full Name Census profile for the Kowalewski 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.
For British records, Name Census UK has a British surname profile for Kowalewski with 1881 census detail, origin facts and modern UK distribution where available.
Bearers in the US
2.9K
1 in 118,436
Census rank
#11,856
2020 decennial data
Per 100,000
0.8
Frequency rate
Recorded bearers
2.5K
rare in the US
Popularity narrative
The Census Bureau recorded 2,524 bearers of the surname Kowalewski in its 2020 decennial surname file. At a rate of 0.84 per 100,000 residents, it holds the 11856th position in the national surname ranking.
Among Census respondents with the surname Kowalewski, the largest self-reported group is White at 95.0%. The next largest groups are Hispanic (2.3%) and Two or More Races (1.7%).
Origin
Meaning and origin of Kowalewski
The surname KOWALEWSKI originated in Poland and is a form of the Polish occupational name for a blacksmith or metalworker. It derives from the Polish word "kowal" meaning "blacksmith" or "smith," combined with the Polish possessive suffix "-ewski." This surname is believed to have emerged in the late medieval period, around the 14th or 15th century, when hereditary surnames became more widespread in Poland.
KOWALEWSKI is a relatively common surname in Poland, and it can be found in historical records and documents from various regions of the country. One of the earliest known bearers of this surname was Jan Kowalewski, a blacksmith who lived in the town of Poznań in the 16th century, as mentioned in the town's records from that time.
Another notable bearer of the KOWALEWSKI name was Jozef Kowalewski, a Polish linguist and orientalist who lived from 1800 to 1878. He made significant contributions to the study of Mongolian and Manchu languages and is considered one of the founders of Mongolian studies in Europe.
The surname KOWALEWSKI has also been associated with several notable figures in the arts and sciences. For example, Tadeusz Kowalewski (1889-1948) was a renowned Polish painter and graphic artist whose works were heavily influenced by Cubism and Expressionism. Another bearer of this surname was Stanisław Kowalewski (1910-1963), a Polish mathematician and logician who made significant contributions to the field of set theory.
In the realm of literature, Wacław Kowalewski (1881-1969) was a Polish writer, poet, and translator known for his works that explored the themes of nature and rural life in Poland. Additionally, Jerzy Kowalewski (1913-1973) was a Polish writer and journalist who gained recognition for his novels and short stories that depicted the lives of ordinary people during the turbulent times of World War II and the post-war period.
It is worth noting that the surname KOWALEWSKI has also been found in other Slavic countries, such as Russia and Ukraine, due to historical migrations and cultural exchanges between these regions. However, its roots can be traced back to Poland, where it emerged as an occupational surname related to the blacksmithing trade.
Demographics
Ancestry and ethnicity for Kowalewski
Among Census respondents with the surname Kowalewski, the largest self-reported group is White at 95.0%. The next largest groups are Hispanic (2.3%) and Two or More Races (1.7%).
The bar chart below shows how Kowalewski 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 Kowalewski surname at the time of the 2020 Census, not any inherent property of the name itself.
- White95.0% · 2,397
- Hispanic or Latino2.3% · 59
- Two or more races1.7% · 42
- Asian and Pacific Islander0.5% · 12
- Black or African American0.3% · 8
- American Indian and Alaska Native0.2% · 6
Timeline
Historical Census data for Kowalewski
Kowalewski 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
#11,568
National surname rank
Recorded bearers 2,718
+14 bearers (+0.5%)
Per 100,000 0.92
Rank movement Down 747 places
2020
#11,856
National surname rank
Recorded bearers 2,524
-194 bearers (-7.1%)
Per 100,000 0.84
Rank movement Down 288 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2000 | #10,821 | 2,704 | 1.00 | First available Census row | First available Census row |
| 2010 | #11,568 | 2,718 | 0.92 | +14 bearers (+0.5%) | Down 747 places |
| 2020 | #11,856 | 2,524 | 0.84 | -194 bearers (-7.1%) | Down 288 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 Kowalewski 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 | #11,568 | #11,856 | -2.5% |
| Count | 2,718 | 2,524 | -7.1% |
| Per 100K | 0.92 | 0.84 | -8.2% |
Between the 2010 and 2020 Census, the number of Kowalewski bearers went from 2,718 to 2,524 (-7.1% change). The surname moved down 288 positions in the national ranking, going from #11,568 to #11,856.
FAQ
Kowalewski surname: questions and answers
How many people in the U.S. have the surname Kowalewski?
Name Census estimates that about 2,894 living Americans carry the surname Kowalewski. Using the current population baseline, that works out to roughly 1 in 118,436 residents.
How common is Kowalewski?
Kowalewski ranks #11,856 in the 2020 Census surname tables and is classified on this site as "Rare." The Census recorded the name at a frequency of 0.84 per 100,000 residents, which is about 1 people out of every 100,000.
How many people with this surname were counted in the Census?
The raw 2020 Census file counted 2,524 people with the surname Kowalewski. That is different from the site's living-bearer estimate (2,894), which projects the surname's present-day count by applying the Census frequency rate to the current U.S. population.
What does 0.84 per 100,000 actually mean?
It is the Census Bureau's normalized frequency measure. A rate of 0.84 per 100,000 means that if you picked a random group of 100,000 U.S. residents, you would expect about 1 of them to have the surname Kowalewski.
Has Kowalewski become more or less common over time?
Between 2010 and 2020, the surname Kowalewski went from 2,718 recorded bearers to 2,524. That is a decrease of 194 (-7.1%). In the national ranking it fell from #11,568 to #11,856.
What does the Census say about the background of Kowalewski?
Among Census respondents with the surname Kowalewski, the largest self-reported group is White at 95.0%. The next largest groups are Hispanic (2.3%) and Two or More Races (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 Kowalewski in the 2020 Census, accounting for 95.0% (2,397 people in the source table).
What is the full ancestry breakdown?
Kowalewski appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are White (95.0%), Hispanic (2.3%), Two or More Races (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 Kowalewski (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 Kowalewski mean?
Derived from the Polish word "kowal" meaning "blacksmith," indicating an ancestor's occupation. 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 Kowalewski (0.84 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 last name Kowalewski?
Our sister site HowManyOfMe.org answers how many people have the last name Kowalewski at a glance, with the living-bearer count up front.