2000
#139,757
National surname rank
Recorded bearers 110
First available Census row
Per 100,000 0.04
Very Rare Last name
Cimochowski
A Polonized variant of the German surname "Ziemichowski", referring to someone from a particular place.
According to the 2020 US Census Bureau surname tables, roughly 117 Americans carry the last name Cimochowski. That puts it at #154,755 in the national surname ranking, appearing at a frequency of 0.03 per 100,000 people (about 1 in 2,929,524 residents).
This page is the full Name Census profile for the Cimochowski 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
117
1 in 2,929,524
Census rank
#154,755
2020 decennial data
Per 100,000
0.0
Frequency rate
Recorded bearers
102
very rare in the US
Popularity narrative
The Census Bureau recorded 102 bearers of the surname Cimochowski in its 2020 decennial surname file. At a rate of 0.03 per 100,000 residents, it holds the 154755th position in the national surname ranking.
Among Census respondents with the surname Cimochowski, the largest self-reported group is White at 95.1%. The next largest groups are Two or More Races (2.9%) and Hispanic (1.0%).
Origin
Meaning and origin of Cimochowski
The surname Cimochowski is of Polish origin and dates back several centuries. It is believed to have originated in the region of Pomerania, a historical region in modern-day northern Poland and western Poland. The name likely has its roots in the Polish word "cimoch," which translates to "darkness" or "gloom," possibly indicating an association with a specific location or occupation.
One of the earliest known references to the Cimochowski surname can be found in the records of the Polish noble families from the 16th century. It is documented that a family by the name of Cimochowski held lands and properties in the area around the town of Tuchola, which was part of the Pomeranian Voivodeship at the time.
In the 17th century, the Cimochowski name appeared in various historical documents and records related to the Polish-Lithuanian Commonwealth. Notably, Jan Cimochowski (1638-1695) was a prominent Polish poet and translator during the Baroque period, known for his translations of works by authors such as Ovid and Virgil.
Another notable figure bearing the Cimochowski surname was Józef Cimochowski (1778-1841), a Polish military officer who served in the Polish Legions during the Napoleonic Wars. He later became a general in the Polish Army and played a significant role in the November Uprising against Russian rule in the early 19th century.
During the 19th century, the Cimochowski name was also found in records from the Prussian Province of Pomerania, which was part of the German Empire at the time. This suggests that some members of the Cimochowski family may have migrated or settled in this region.
In more recent history, Władysław Cimochowski (1892-1975) was a notable Polish painter and art educator. He was a prominent figure in the Polish art scene during the interwar period and served as the rector of the Academy of Fine Arts in Warsaw.
Another individual of note was Jerzy Cimochowski (1926-2005), a Polish composer and conductor who made significant contributions to the world of classical music, particularly in the field of choral compositions.
While the Cimochowski surname originated in Poland, it has since spread to other parts of the world due to migration and diaspora. However, its historical roots and earliest recorded instances can be traced back to the regions of Pomerania and the Polish-Lithuanian Commonwealth.
Demographics
Ancestry and ethnicity for Cimochowski
Among Census respondents with the surname Cimochowski, the largest self-reported group is White at 95.1%. The next largest groups are Two or More Races (2.9%) and Hispanic (1.0%).
The bar chart below shows how Cimochowski 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 Cimochowski surname at the time of the 2020 Census, not any inherent property of the name itself.
- White95.1% · 97
- Two or more races2.9% · 3
- Hispanic or Latino1.0% · 1
- Asian and Pacific Islander1.0% · 1
Timeline
Historical Census data for Cimochowski
Cimochowski 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
#141,140
National surname rank
Recorded bearers 118
+8 bearers (+7.3%)
Per 100,000 0.04
Rank movement Down 1,383 places
2020
#154,755
National surname rank
Recorded bearers 102
-16 bearers (-13.6%)
Per 100,000 0.03
Rank movement Down 13,615 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2000 | #139,757 | 110 | 0.04 | First available Census row | First available Census row |
| 2010 | #141,140 | 118 | 0.04 | +8 bearers (+7.3%) | Down 1,383 places |
| 2020 | #154,755 | 102 | 0.03 | -16 bearers (-13.6%) | Down 13,615 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 Cimochowski 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 | #141,140 | #154,755 | -9.6% |
| Count | 118 | 102 | -13.6% |
| Per 100K | 0.04 | 0.03 | -14.7% |
Between the 2010 and 2020 Census, the number of Cimochowski bearers went from 118 to 102 (-13.6% change). The surname moved down 13,615 positions in the national ranking, going from #141,140 to #154,755.
FAQ
Cimochowski surname: questions and answers
How many people in the U.S. have the surname Cimochowski?
Name Census estimates that about 117 living Americans carry the surname Cimochowski. Using the current population baseline, that works out to roughly 1 in 2,929,524 residents.
How common is Cimochowski?
Cimochowski ranks #154,755 in the 2020 Census surname tables and is classified on this site as "Very Rare." The Census recorded the name at a frequency of 0.03 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 102 people with the surname Cimochowski. That is different from the site's living-bearer estimate (117), which projects the surname's present-day count by applying the Census frequency rate to the current U.S. population.
What does 0.03 per 100,000 actually mean?
It is the Census Bureau's normalized frequency measure. A rate of 0.03 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 Cimochowski.
Has Cimochowski become more or less common over time?
Between 2010 and 2020, the surname Cimochowski went from 118 recorded bearers to 102. That is a decrease of 16 (-13.6%). In the national ranking it fell from #141,140 to #154,755.
What does the Census say about the background of Cimochowski?
Among Census respondents with the surname Cimochowski, the largest self-reported group is White at 95.1%. The next largest groups are Two or More Races (2.9%) and Hispanic (1.0%). 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 Cimochowski in the 2020 Census, accounting for 95.1% (97 people in the source table).
What is the full ancestry breakdown?
Cimochowski appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are White (95.1%), Two or More Races (2.9%), Hispanic (1.0%). 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 Cimochowski (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 Cimochowski mean?
A Polonized variant of the German surname "Ziemichowski", referring to someone from a particular place. 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 Cimochowski (0.03 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 Cimochowski?
For a faster, more casual read, check HowManyOfMe.org — our sister site built around that single question.