2000
#129,619
National surname rank
Recorded bearers 121
First available Census row
Per 100,000 0.04
Very Rare Last name
Tomporowski
A surname of Polish origin derived from the place name "Tomporów".
According to the 2020 US Census Bureau surname tables, roughly 132 Americans carry the last name Tomporowski. That puts it at #145,757 in the national surname ranking, appearing at a frequency of 0.04 per 100,000 people (about 1 in 2,596,624 residents).
This page is the full Name Census profile for the Tomporowski 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
132
1 in 2,596,624
Census rank
#145,757
2020 decennial data
Per 100,000
0.0
Frequency rate
Recorded bearers
115
very rare in the US
Popularity narrative
The Census Bureau recorded 115 bearers of the surname Tomporowski in its 2020 decennial surname file. At a rate of 0.04 per 100,000 residents, it holds the 145757th position in the national surname ranking.
Among Census respondents with the surname Tomporowski, the largest self-reported group is White at 96.5%. The next largest groups are Two or More Races (3.5%).
Origin
Meaning and origin of Tomporowski
The surname TOMPOROWSKI is of Polish origin, with its roots tracing back to the 16th century. It is believed to have originated from the region of Wielkopolska, located in western Poland. The name likely derived from the Polish word "tompor," which translates to "dull" or "blunt." This suggests that the name may have been initially given as a descriptive nickname to an individual with a dull or blunt demeanor or temperament.
One of the earliest known records of the TOMPOROWSKI name can be found in the parish records of the town of Kalisz, dated back to the late 1500s. These records mention a certain Jakub Tomporowski, who was a local landowner and farmer. It is speculated that this Jakub may have been one of the first individuals to bear the surname, which later spread to other parts of Poland.
In the 17th century, the TOMPOROWSKI name appeared in various historical documents, such as land deeds and court records, particularly in the regions of Wielkopolska and Mazowsze. These records provide insights into the lives of individuals bearing this surname, including their occupations, property holdings, and legal disputes.
One notable figure bearing the TOMPOROWSKI name was Andrzej Tomporowski, a Polish military officer who lived in the late 18th century. He served in the Polish-Lithuanian Commonwealth's army and participated in the Kościuszko Uprising against the Russian Empire in 1794.
Another individual of historical significance was Franciszka Tomporowski (1808-1892), a Polish educator and advocate for women's education. She established one of the first private schools for girls in Warsaw and dedicated her life to promoting educational opportunities for women in a time when such initiatives were rare.
In the 19th century, the TOMPOROWSKI name can be found in various regions of partitioned Poland, which was under the control of the Russian Empire, Prussia, and Austria-Hungary. Records from this period show individuals bearing this surname residing in cities such as Warsaw, Krakow, and Lviv (now in Ukraine).
One notable figure from this era was Józef Tomporowski (1832-1901), a Polish artist and painter known for his landscape and genre scenes. His works were exhibited in major art exhibitions in Warsaw and St. Petersburg, and some of his paintings are now held in prestigious collections in Poland.
In the early 20th century, the TOMPOROWSKI name continued to be present in various parts of Poland, with individuals pursuing various professions, including academia, business, and the arts. One notable figure from this period was Maria Tomporowski (1879-1957), a Polish writer and journalist who published several novels and short stories depicting the lives of Polish women in the early 20th century.
Demographics
Ancestry and ethnicity for Tomporowski
Among Census respondents with the surname Tomporowski, the largest self-reported group is White at 96.5%. The next largest groups are Two or More Races (3.5%).
The bar chart below shows how Tomporowski 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 Tomporowski surname at the time of the 2020 Census, not any inherent property of the name itself.
- White96.5% · 111
- Two or more races3.5% · 4
Timeline
Historical Census data for Tomporowski
Tomporowski 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
#135,593
National surname rank
Recorded bearers 124
+3 bearers (+2.5%)
Per 100,000 0.04
Rank movement Down 5,974 places
2020
#145,757
National surname rank
Recorded bearers 115
-9 bearers (-7.3%)
Per 100,000 0.04
Rank movement Down 10,164 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2000 | #129,619 | 121 | 0.04 | First available Census row | First available Census row |
| 2010 | #135,593 | 124 | 0.04 | +3 bearers (+2.5%) | Down 5,974 places |
| 2020 | #145,757 | 115 | 0.04 | -9 bearers (-7.3%) | Down 10,164 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 Tomporowski 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 | #135,593 | #145,757 | -7.5% |
| Count | 124 | 115 | -7.3% |
| Per 100K | 0.04 | 0.04 | -3.8% |
Between the 2010 and 2020 Census, the number of Tomporowski bearers went from 124 to 115 (-7.3% change). The surname moved down 10,164 positions in the national ranking, going from #135,593 to #145,757.
FAQ
Tomporowski surname: questions and answers
How many people in the U.S. have the surname Tomporowski?
Name Census estimates that about 132 living Americans carry the surname Tomporowski. Using the current population baseline, that works out to roughly 1 in 2,596,624 residents.
How common is Tomporowski?
Tomporowski ranks #145,757 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 115 people with the surname Tomporowski. That is different from the site's living-bearer estimate (132), 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 Tomporowski.
Has Tomporowski become more or less common over time?
Between 2010 and 2020, the surname Tomporowski went from 124 recorded bearers to 115. That is a decrease of 9 (-7.3%). In the national ranking it fell from #135,593 to #145,757.
What does the Census say about the background of Tomporowski?
Among Census respondents with the surname Tomporowski, the largest self-reported group is White at 96.5%. The next largest groups are Two or More Races (3.5%). 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 Tomporowski in the 2020 Census, accounting for 96.5% (111 people in the source table).
What is the full ancestry breakdown?
Tomporowski appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are White (96.5%), Two or More Races (3.5%). 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 Tomporowski (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 Tomporowski mean?
A surname of Polish origin derived from the place name "Tomporów". 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 Tomporowski (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 share the surname Tomporowski?
For a quick modern estimate, our sister site HowManyOfMe.org answers that in one glance, with the living-bearer count front and centre.