2010
#151,532
National surname rank
Recorded bearers 108
First available Census row
Per 100,000 0.04
Very Rare Last name
Iczkowski
A Polish surname derived from the personal name "Icek" (a diminutive of Isaac).
According to the 2020 US Census Bureau surname tables, roughly 122 Americans carry the last name Iczkowski. That puts it at #152,339 in the national surname ranking, appearing at a frequency of 0.04 per 100,000 people (about 1 in 2,809,462 residents).
This page is the full Name Census profile for the Iczkowski 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
122
1 in 2,809,462
Census rank
#152,339
2020 decennial data
Per 100,000
0.0
Frequency rate
Recorded bearers
106
very rare in the US
Popularity narrative
The Census Bureau recorded 106 bearers of the surname Iczkowski in its 2020 decennial surname file. At a rate of 0.04 per 100,000 residents, it holds the 152339th position in the national surname ranking.
Among Census respondents with the surname Iczkowski, the largest self-reported group is White at 95.3%. The next largest groups are Hispanic (3.8%) and American Indian/Alaska Native (0.9%).
Origin
Meaning and origin of Iczkowski
The surname Iczkowski has its origins in Poland, likely emerging in the late 15th or early 16th century. It is derived from the Polish word "iczek," which means "son of," combined with a personal name such as "Iczko" or a place name like "Iczków." This naming convention was common in Slavic regions, indicating a person's relationship to their father or the place they were from.
One of the earliest known references to the Iczkowski name can be found in the records of the town of Krakow, which dates back to the late 16th century. These records mention an individual named Jan Iczkowski, a merchant who traded goods between Poland and neighboring regions. Unfortunately, specific dates for Jan Iczkowski are not available in these records.
In the 17th century, the Iczkowski name appeared in various Polish villages and towns, suggesting its spread across the country. One notable bearer of this surname was Michał Iczkowski, a Polish nobleman born in 1628. He served as a military officer during the Northern Wars and was known for his bravery on the battlefield.
During the 18th century, the Iczkowski name continued to be found in various parts of Poland. One notable individual from this time period was Katarzyna Iczkowska, a renowned painter born in 1756 in the town of Łódź. Her works, which often depicted scenes of everyday life in Poland, are still cherished by art enthusiasts today.
In the 19th century, the Iczkowski surname gained prominence with the birth of Adam Iczkowski in 1820. He was a prominent Polish writer and poet whose works explored themes of national identity and the struggle for independence. His most famous work, "Pieśń o Ojczyźnie" ("Song of the Homeland"), became a rallying cry for Polish patriots during this turbulent period.
Another notable individual with the Iczkowski surname was Jadwiga Iczkowska, born in 1875. She was a pioneering educator who fought for women's rights and established several schools for girls in Warsaw and surrounding areas. Her efforts helped pave the way for greater educational opportunities for women in Poland.
Throughout its history, the Iczkowski surname has been associated with various professions, including merchants, nobles, artists, writers, and educators. While its exact origins and early bearers remain obscured by time, the name continues to hold significance in Polish culture and heritage.
Demographics
Ancestry and ethnicity for Iczkowski
Among Census respondents with the surname Iczkowski, the largest self-reported group is White at 95.3%. The next largest groups are Hispanic (3.8%) and American Indian/Alaska Native (0.9%).
The bar chart below shows how Iczkowski 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 Iczkowski surname at the time of the 2020 Census, not any inherent property of the name itself.
- White95.3% · 101
- Hispanic or Latino3.8% · 4
- American Indian and Alaska Native0.9% · 1
Timeline
Historical Census data for Iczkowski
Iczkowski appears in 2 published Census surname files: 2010, 2020. The cards below show how the name's rank and bearer count changed across each release.
2020
#152,339
National surname rank
Recorded bearers 106
-2 bearers (-1.9%)
Per 100,000 0.04
Rank movement Down 807 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2010 | #151,532 | 108 | 0.04 | First available Census row | First available Census row |
| 2020 | #152,339 | 106 | 0.04 | -2 bearers (-1.9%) | Down 807 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 Iczkowski 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 | #151,532 | #152,339 | -0.5% |
| Count | 108 | 106 | -1.9% |
| Per 100K | 0.04 | 0.04 | -11.3% |
Between the 2010 and 2020 Census, the number of Iczkowski bearers went from 108 to 106 (-1.9% change). The surname moved down 807 positions in the national ranking, going from #151,532 to #152,339.
FAQ
Iczkowski surname: questions and answers
How many people in the U.S. have the surname Iczkowski?
Name Census estimates that about 122 living Americans carry the surname Iczkowski. Using the current population baseline, that works out to roughly 1 in 2,809,462 residents.
How common is Iczkowski?
Iczkowski ranks #152,339 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 106 people with the surname Iczkowski. That is different from the site's living-bearer estimate (122), 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 Iczkowski.
Has Iczkowski become more or less common over time?
Between 2010 and 2020, the surname Iczkowski went from 108 recorded bearers to 106. That is a decrease of 2 (-1.9%). In the national ranking it fell from #151,532 to #152,339.
What does the Census say about the background of Iczkowski?
Among Census respondents with the surname Iczkowski, the largest self-reported group is White at 95.3%. The next largest groups are Hispanic (3.8%) and American Indian/Alaska Native (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 Iczkowski in the 2020 Census, accounting for 95.3% (101 people in the source table).
What is the full ancestry breakdown?
Iczkowski appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are White (95.3%), Hispanic (3.8%), American Indian/Alaska Native (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 Iczkowski (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 Iczkowski mean?
A Polish surname derived from the personal name "Icek" (a diminutive of Isaac). 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 Iczkowski (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 surname Iczkowski?
HowManyOfMe.org, our sister site, answers that with the living-bearer count in one glance.