2000
#136,783
National surname rank
Recorded bearers 113
First available Census row
Per 100,000 0.04
Very Rare Last name
Dunajski
A surname derived from "Dunaj" referring to someone from the region near the Danube River.
According to the 2020 US Census Bureau surname tables, roughly 127 Americans carry the last name Dunajski. 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 Dunajski 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 Dunajski 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 Dunajski, the largest self-reported group is White at 89.2%. The next largest groups are Hispanic (4.5%) and Black (2.7%).
Origin
Meaning and origin of Dunajski
The surname DUNAJSKI is of Polish origin, derived from the word "Dunaj," which means the Danube River. It first emerged in the late 15th century among families living in the regions surrounding the Danube River, particularly in the areas around Kraków and Silesia.
One of the earliest recorded instances of the surname DUNAJSKI can be found in the Kraków municipal records from the year 1492, where a certain Jan DUNAJSKI is mentioned as a merchant operating in the city. The name likely originated as a descriptive surname, indicating a person's proximity to the Danube River or their occupation related to the river trade.
In the 16th century, the DUNAJSKI surname appears in several historical documents, including the Poznań Land Records of 1521, where a Michał DUNAJSKI is listed as a landowner. The name is also found in the Kraków Archdiocese Records from 1578, which mentions a Katarzyna DUNAJSKI, the daughter of a local nobleman.
Over the centuries, the DUNAJSKI surname has been associated with several notable individuals. One of the earliest recorded figures was Bartłomiej DUNAJSKI (1548-1615), a prominent Polish Renaissance poet and translator who authored numerous works in Latin and Polish.
In the 18th century, Józef DUNAJSKI (1723-1797) was a renowned architect and military engineer who designed several fortifications and buildings in the Polish-Lithuanian Commonwealth. His most notable work was the reconstruction of the Royal Castle in Warsaw after it was heavily damaged during the Warsaw Uprising of 1794.
Another prominent figure with the DUNAJSKI surname was Tadeusz DUNAJSKI (1880-1945), a Polish painter and art professor who taught at the Academy of Fine Arts in Kraków. His works were heavily influenced by the Impressionist and Modernist movements, and he is particularly known for his landscapes and portraiture.
In the 20th century, Jerzy DUNAJSKI (1912-1983) was a distinguished Polish mathematician and logician who made significant contributions to the field of mathematical logic and set theory. He was a professor at the University of Warsaw and a member of the Polish Academy of Sciences.
The surname DUNAJSKI has also been associated with several notable places throughout history. For example, the village of Dunajska Ledziny in southern Poland is believed to have derived its name from the DUNAJSKI family who settled in the area during the Middle Ages.
Demographics
Ancestry and ethnicity for Dunajski
Among Census respondents with the surname Dunajski, the largest self-reported group is White at 89.2%. The next largest groups are Hispanic (4.5%) and Black (2.7%).
The bar chart below shows how Dunajski 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 Dunajski surname at the time of the 2020 Census, not any inherent property of the name itself.
- White89.2% · 99
- Hispanic or Latino4.5% · 5
- Black or African American2.7% · 3
- Two or more races2.7% · 3
- Asian and Pacific Islander0.9% · 1
Timeline
Historical Census data for Dunajski
Dunajski 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
#138,304
National surname rank
Recorded bearers 121
+8 bearers (+7.1%)
Per 100,000 0.04
Rank movement Down 1,521 places
2020
#148,665
National surname rank
Recorded bearers 111
-10 bearers (-8.3%)
Per 100,000 0.04
Rank movement Down 10,361 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2000 | #136,783 | 113 | 0.04 | First available Census row | First available Census row |
| 2010 | #138,304 | 121 | 0.04 | +8 bearers (+7.1%) | Down 1,521 places |
| 2020 | #148,665 | 111 | 0.04 | -10 bearers (-8.3%) | Down 10,361 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 Dunajski 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 | #138,304 | #148,665 | -7.5% |
| Count | 121 | 111 | -8.3% |
| Per 100K | 0.04 | 0.04 | -7.2% |
Between the 2010 and 2020 Census, the number of Dunajski bearers went from 121 to 111 (-8.3% change). The surname moved down 10,361 positions in the national ranking, going from #138,304 to #148,665.
FAQ
Dunajski surname: questions and answers
How many people in the U.S. have the surname Dunajski?
Name Census estimates that about 127 living Americans carry the surname Dunajski. Using the current population baseline, that works out to roughly 1 in 2,698,853 residents.
How common is Dunajski?
Dunajski 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 Dunajski. 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 Dunajski.
Has Dunajski become more or less common over time?
Between 2010 and 2020, the surname Dunajski went from 121 recorded bearers to 111. That is a decrease of 10 (-8.3%). In the national ranking it fell from #138,304 to #148,665.
What does the Census say about the background of Dunajski?
Among Census respondents with the surname Dunajski, the largest self-reported group is White at 89.2%. The next largest groups are Hispanic (4.5%) and Black (2.7%). 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 Dunajski in the 2020 Census, accounting for 89.2% (99 people in the source table).
What is the full ancestry breakdown?
Dunajski appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are White (89.2%), Hispanic (4.5%), Black (2.7%). 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 Dunajski (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 Dunajski mean?
A surname derived from "Dunaj" referring to someone from the region near the Danube River. 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 Dunajski (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 have the last name Dunajski?
You can see how common the surname Dunajski is on our sister site HowManyOfMe.org — same data roots, lighter UI.