2000
#103,193
National surname rank
Recorded bearers 161
First available Census row
Per 100,000 0.06
Very Rare Last name
Radonski
A surname potentially derived from the Polish word "radon," meaning "happy" or "joyful."
According to the 2020 US Census Bureau surname tables, roughly 124 Americans carry the last name Radonski. That puts it at #150,935 in the national surname ranking, appearing at a frequency of 0.04 per 100,000 people (about 1 in 2,764,148 residents).
This page is the full Name Census profile for the Radonski 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
124
1 in 2,764,148
Census rank
#150,935
2020 decennial data
Per 100,000
0.0
Frequency rate
Recorded bearers
108
very rare in the US
Popularity narrative
The Census Bureau recorded 108 bearers of the surname Radonski in its 2020 decennial surname file. At a rate of 0.04 per 100,000 residents, it holds the 150935th position in the national surname ranking.
Among Census respondents with the surname Radonski, the largest self-reported group is White at 86.1%. The next largest groups are Black (4.6%) and Hispanic (2.8%).
Origin
Meaning and origin of Radonski
The surname Radonski originates from Poland, and its earliest known origins can be traced back to the 16th century. The name is derived from the Polish word "radon," meaning "joyful" or "delightful," and the suffix "-ski," which is a common Polish patronymic ending indicating familial descent or place of origin.
One of the earliest recorded instances of the Radonski name can be found in the historical records of the town of Radońsk, located in the Masovian Voivodeship of central Poland. It is believed that the name may have originated from this town, with families adopting the place name as their surname.
In the 17th century, the Radonski family played a prominent role in the Polish-Lithuanian Commonwealth. Jakub Radonski (1620-1689) was a renowned military leader who served as a colonel in the Polish-Lithuanian army during the Swedish Deluge, a series of conflicts between Poland and Sweden in the mid-17th century.
Another notable figure was Katarzyna Radonska (1754-1832), a Polish noblewoman and philanthropist. She was renowned for her charitable works, establishing schools and hospitals in her home region of Masovia.
During the 19th century, the Radonski name gained prominence in the field of literature. Wladyslaw Radonski (1818-1893) was a celebrated Polish poet and playwright, best known for his works exploring themes of national identity and patriotism.
In the early 20th century, the Radonski family spread beyond Poland's borders. Kazimierz Radonski (1892-1976) was a Polish-American entrepreneur who founded a successful construction company in Chicago, Illinois, after immigrating to the United States in the 1920s.
Another notable figure was Maria Radonska (1901-1987), a Polish-born artist and sculptor who gained recognition for her avant-garde works in France, where she lived and worked for much of her life.
Throughout its history, the Radonski surname has been associated with individuals from various walks of life, including military leaders, noblemen, writers, artists, and entrepreneurs. While the name has its roots in Poland, it has since spread to other parts of the world, reflecting the diverse journeys and accomplishments of those who have carried this surname.
Demographics
Ancestry and ethnicity for Radonski
Among Census respondents with the surname Radonski, the largest self-reported group is White at 86.1%. The next largest groups are Black (4.6%) and Hispanic (2.8%).
The bar chart below shows how Radonski 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 Radonski surname at the time of the 2020 Census, not any inherent property of the name itself.
- White86.1% · 93
- Black or African American4.6% · 5
- Hispanic or Latino2.8% · 3
- American Indian and Alaska Native2.8% · 3
- Two or more races2.8% · 3
- Asian and Pacific Islander0.9% · 1
Timeline
Historical Census data for Radonski
Radonski 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
#116,201
National surname rank
Recorded bearers 150
-11 bearers (-6.8%)
Per 100,000 0.05
Rank movement Down 13,008 places
2020
#150,935
National surname rank
Recorded bearers 108
-42 bearers (-28.0%)
Per 100,000 0.04
Rank movement Down 34,734 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2000 | #103,193 | 161 | 0.06 | First available Census row | First available Census row |
| 2010 | #116,201 | 150 | 0.05 | -11 bearers (-6.8%) | Down 13,008 places |
| 2020 | #150,935 | 108 | 0.04 | -42 bearers (-28.0%) | Down 34,734 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 Radonski 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 | #116,201 | #150,935 | -29.9% |
| Count | 150 | 108 | -28.0% |
| Per 100K | 0.05 | 0.04 | -27.7% |
Between the 2010 and 2020 Census, the number of Radonski bearers went from 150 to 108 (-28.0% change). The surname moved down 34,734 positions in the national ranking, going from #116,201 to #150,935.
FAQ
Radonski surname: questions and answers
How many people in the U.S. have the surname Radonski?
Name Census estimates that about 124 living Americans carry the surname Radonski. Using the current population baseline, that works out to roughly 1 in 2,764,148 residents.
How common is Radonski?
Radonski ranks #150,935 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 108 people with the surname Radonski. That is different from the site's living-bearer estimate (124), 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 Radonski.
Has Radonski become more or less common over time?
Between 2010 and 2020, the surname Radonski went from 150 recorded bearers to 108. That is a decrease of 42 (-28.0%). In the national ranking it fell from #116,201 to #150,935.
What does the Census say about the background of Radonski?
Among Census respondents with the surname Radonski, the largest self-reported group is White at 86.1%. The next largest groups are Black (4.6%) and Hispanic (2.8%). 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 Radonski in the 2020 Census, accounting for 86.1% (93 people in the source table).
What is the full ancestry breakdown?
Radonski appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are White (86.1%), Black (4.6%), Hispanic (2.8%). 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 Radonski (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 Radonski mean?
A surname potentially derived from the Polish word "radon," meaning "happy" or "joyful." 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 Radonski (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 common is the surname Radonski?
Want to know how many people are called Radonski? HowManyOfMe.org, our sister site, puts the living-bearer count front and centre.