2000
#141,788
National surname rank
Recorded bearers 108
First available Census row
Per 100,000 0.04
Very Rare Last name
Radzicki
A Polish surname derived from the diminutive of the given name Radosław or Radek.
According to the 2020 US Census Bureau surname tables, roughly 133 Americans carry the last name Radzicki. That puts it at #145,028 in the national surname ranking, appearing at a frequency of 0.04 per 100,000 people (about 1 in 2,577,100 residents).
This page is the full Name Census profile for the Radzicki 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
133
1 in 2,577,100
Census rank
#145,028
2020 decennial data
Per 100,000
0.0
Frequency rate
Recorded bearers
116
very rare in the US
Popularity narrative
The Census Bureau recorded 116 bearers of the surname Radzicki in its 2020 decennial surname file. At a rate of 0.04 per 100,000 residents, it holds the 145028th position in the national surname ranking.
Among Census respondents with the surname Radzicki, the largest self-reported group is White at 98.3%. The next largest groups are Hispanic (0.9%) and Asian/Pacific Islander (0.9%).
Origin
Meaning and origin of Radzicki
The surname Radzicki is of Polish origin, with roots dating back to the early medieval period. It is derived from the Polish name Radzic, which itself comes from the Slavic root "rad," meaning "joy" or "happiness." The suffix "-icki" is a common Polish patronymic ending, indicating that the name was originally used to denote being the son or descendant of someone named Radzic.
One of the earliest recorded instances of the name Radzicki can be found in the Polish historical records of the 14th century, where a nobleman named Jan Radzicki is mentioned as a landowner in the region of Mazovia. This suggests that the name was already well-established among the Polish gentry by that time.
In the 16th century, a prominent figure named Mikołaj Radzicki rose to prominence as a Polish diplomat and writer. He served as a secretary to King Sigismund III Vasa and authored several works on Polish history and culture.
The name Radzicki has also been associated with various place names in Poland, such as the village of Radzicko in the Lublin Voivodeship and the town of Radzice in the Łódź Voivodeship. These place names likely derived from the personal name Radzicki, indicating that families with this surname may have been among the earliest settlers in these areas.
One notable individual with the surname Radzicki was Zdzisław Radzicki (1911-1984), a Polish writer and journalist who served as the editor-in-chief of the influential magazine "Życie Literackie" during the communist era in Poland. His works often explored themes of social justice and the human condition.
Another prominent figure was Kazimierz Radzicki (1897-1939), a Polish military officer who played a crucial role in the defense of Warsaw during the German invasion of Poland in 1939. He was killed in action during the siege of the city and was posthumously awarded the Virtuti Militari, Poland's highest military decoration.
In the field of science, the name Radzicki is associated with Henryk Radzicki (1885-1968), a Polish mathematician and logician who made significant contributions to the foundations of mathematics and set theory.
Lastly, in the realm of sports, Józef Radzicki (1906-1991) was a Polish football player and coach who represented Poland in the 1936 Summer Olympics and later went on to manage several prominent Polish clubs.
Demographics
Ancestry and ethnicity for Radzicki
Among Census respondents with the surname Radzicki, the largest self-reported group is White at 98.3%. The next largest groups are Hispanic (0.9%) and Asian/Pacific Islander (0.9%).
The bar chart below shows how Radzicki 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 Radzicki surname at the time of the 2020 Census, not any inherent property of the name itself.
- White98.3% · 114
- Hispanic or Latino0.9% · 1
- Asian and Pacific Islander0.9% · 1
Timeline
Historical Census data for Radzicki
Radzicki 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
#143,149
National surname rank
Recorded bearers 116
+8 bearers (+7.4%)
Per 100,000 0.04
Rank movement Down 1,361 places
2020
#145,028
National surname rank
Recorded bearers 116
+0 bearers (+0.0%)
Per 100,000 0.04
Rank movement Down 1,879 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2000 | #141,788 | 108 | 0.04 | First available Census row | First available Census row |
| 2010 | #143,149 | 116 | 0.04 | +8 bearers (+7.4%) | Down 1,361 places |
| 2020 | #145,028 | 116 | 0.04 | +0 bearers (+0.0%) | Down 1,879 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 Radzicki 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 | #143,149 | #145,028 | -1.3% |
| Count | 116 | 116 | 0.0% |
| Per 100K | 0.04 | 0.04 | -3.0% |
Between the 2010 and 2020 Census, the number of Radzicki bearers went from 116 to 116 (+0.0% change). The surname moved down 1,879 positions in the national ranking, going from #143,149 to #145,028.
FAQ
Radzicki surname: questions and answers
How many people in the U.S. have the surname Radzicki?
Name Census estimates that about 133 living Americans carry the surname Radzicki. Using the current population baseline, that works out to roughly 1 in 2,577,100 residents.
How common is Radzicki?
Radzicki ranks #145,028 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 116 people with the surname Radzicki. That is different from the site's living-bearer estimate (133), 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 Radzicki.
Has Radzicki become more or less common over time?
Between 2010 and 2020, the surname Radzicki went from 116 recorded bearers to 116. That is an increase of 0 (+0.0%). In the national ranking it fell from #143,149 to #145,028.
What does the Census say about the background of Radzicki?
Among Census respondents with the surname Radzicki, the largest self-reported group is White at 98.3%. The next largest groups are Hispanic (0.9%) and Asian/Pacific Islander (0.9%). 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 Radzicki in the 2020 Census, accounting for 98.3% (114 people in the source table).
What is the full ancestry breakdown?
Radzicki appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are White (98.3%), Hispanic (0.9%), Asian/Pacific Islander (0.9%). 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 Radzicki (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 Radzicki mean?
A Polish surname derived from the diminutive of the given name Radosław or Radek. 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 Radzicki (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 Radzicki?
You can see how many people have the last name Radzicki on our sister site HowManyOfMe.org — same data roots, lighter UI.