2000
#1,817
National surname rank
Recorded bearers 18,134
First available Census row
Per 100,000 6.72
Uncommon Last name
Kowalski
A Polish occupational surname referring to a blacksmith or someone who forges metal.
According to the 2020 US Census Bureau surname tables, roughly 19,174 Americans carry the last name Kowalski. That puts it at #2,102 in the national surname ranking, appearing at a frequency of 5.59 per 100,000 people (about 1 in 17,876 residents).
This page is the full Name Census profile for the Kowalski 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 Kowalski with 1881 census detail, origin facts and modern UK distribution where available.
Bearers in the US
19K
1 in 17,876
Census rank
#2,102
2020 decennial data
Per 100,000
5.6
Frequency rate
Recorded bearers
17K
uncommon in the US
Popularity narrative
The Census Bureau recorded 16,721 bearers of the surname Kowalski in its 2020 decennial surname file. At a rate of 5.59 per 100,000 residents, it holds the 2102nd position in the national surname ranking.
Among Census respondents with the surname Kowalski, the largest self-reported group is White at 93.4%. The next largest groups are Hispanic (3.0%) and Two or More Races (2.3%).
Origin
Meaning and origin of Kowalski
The surname Kowalski originates from Poland and is a Polish occupational name derived from the word "kowal", meaning "blacksmith". It first emerged in the Middle Ages when surnames began to be adopted from occupations, locations, or personal characteristics.
The earliest recorded instances of the name Kowalski date back to the 15th century in various Polish historical records and documents. These include references in church registers, tax rolls, and land ownership records. The name was initially spelled in various ways, such as Kowalski, Kowalsky, or Kowalczyk, reflecting regional dialect variations.
Kowalski is a common surname in Poland and has been associated with several notable figures throughout history. One of the earliest recorded individuals with this surname was Jan Kowalski, a renowned blacksmith who lived in the city of Krakow during the late 15th century. His craftsmanship was highly regarded, and he was commissioned to create intricate metalwork for churches and noble households.
During the 16th and 17th centuries, the name Kowalski appeared in various historical records related to the Polish nobility and gentry. For instance, Stanisław Kowalski (1550-1622) was a prominent landowner and military commander who fought in several battles against the Swedish forces during the Polish-Swedish wars of the early 17th century.
In the 18th century, Franciszek Kowalski (1720-1785) was a respected scholar and philosopher who taught at the renowned Jagiellonian University in Krakow. His writings on ethics and moral philosophy were widely studied and influenced generations of Polish intellectuals.
Another notable figure was Józef Kowalski (1801-1878), a prominent Polish painter and artist during the Romantic period. His works, depicting landscapes and historical scenes, are now housed in various museums and galleries across Poland.
In the 20th century, Tadeusz Kowalski (1919-2009) was a celebrated Polish writer and journalist who documented the experiences of Poles during World War II and the communist era. His memoirs and novels shed light on the struggles and resilience of the Polish people during those turbulent times.
While the surname Kowalski originated from the blacksmith trade, it has since transcended its occupational roots and become a widespread Polish surname carried by individuals from various walks of life, contributing to the rich cultural and historical fabric of Poland.
Demographics
Ancestry and ethnicity for Kowalski
Among Census respondents with the surname Kowalski, the largest self-reported group is White at 93.4%. The next largest groups are Hispanic (3.0%) and Two or More Races (2.3%).
The bar chart below shows how Kowalski 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 Kowalski surname at the time of the 2020 Census, not any inherent property of the name itself.
- White93.4% · 15,612
- Hispanic or Latino3.0% · 504
- Two or more races2.3% · 391
- Asian and Pacific Islander0.6% · 100
- Black or African American0.5% · 76
- American Indian and Alaska Native0.2% · 38
Timeline
Historical Census data for Kowalski
Kowalski 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
#1,999
National surname rank
Recorded bearers 18,077
-57 bearers (-0.3%)
Per 100,000 6.13
Rank movement Down 182 places
2020
#2,102
National surname rank
Recorded bearers 16,721
-1,356 bearers (-7.5%)
Per 100,000 5.59
Rank movement Down 103 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2000 | #1,817 | 18,134 | 6.72 | First available Census row | First available Census row |
| 2010 | #1,999 | 18,077 | 6.13 | -57 bearers (-0.3%) | Down 182 places |
| 2020 | #2,102 | 16,721 | 5.59 | -1,356 bearers (-7.5%) | Down 103 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 Kowalski 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 | #1,999 | #2,102 | -5.2% |
| Count | 18,077 | 16,721 | -7.5% |
| Per 100K | 6.13 | 5.59 | -8.7% |
Between the 2010 and 2020 Census, the number of Kowalski bearers went from 18,077 to 16,721 (-7.5% change). The surname moved down 103 positions in the national ranking, going from #1,999 to #2,102.
Notable bearers
Famous people with the surname Kowalski
FAQ
Kowalski surname: questions and answers
How many people in the U.S. have the surname Kowalski?
Name Census estimates that about 19,174 living Americans carry the surname Kowalski. Using the current population baseline, that works out to roughly 1 in 17,876 residents.
How common is Kowalski?
Kowalski ranks #2,102 in the 2020 Census surname tables and is classified on this site as "Uncommon." The Census recorded the name at a frequency of 5.59 per 100,000 residents, which is about 6 people out of every 100,000.
How many people with this surname were counted in the Census?
The raw 2020 Census file counted 16,721 people with the surname Kowalski. That is different from the site's living-bearer estimate (19,174), which projects the surname's present-day count by applying the Census frequency rate to the current U.S. population.
What does 5.59 per 100,000 actually mean?
It is the Census Bureau's normalized frequency measure. A rate of 5.59 per 100,000 means that if you picked a random group of 100,000 U.S. residents, you would expect about 6 of them to have the surname Kowalski.
Has Kowalski become more or less common over time?
Between 2010 and 2020, the surname Kowalski went from 18,077 recorded bearers to 16,721. That is a decrease of 1,356 (-7.5%). In the national ranking it fell from #1,999 to #2,102.
What does the Census say about the background of Kowalski?
Among Census respondents with the surname Kowalski, the largest self-reported group is White at 93.4%. The next largest groups are Hispanic (3.0%) and Two or More Races (2.3%). 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 Kowalski in the 2020 Census, accounting for 93.4% (15,612 people in the source table).
What is the full ancestry breakdown?
Kowalski appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are White (93.4%), Hispanic (3.0%), Two or More Races (2.3%). 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 Kowalski (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 Kowalski mean?
A Polish occupational surname referring to a blacksmith or someone who forges metal. 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 Kowalski (5.59 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 Kowalski?
If you just want to know how many people have the surname Kowalski, HowManyOfMe.org gives you the headline number in one glance.