2010
#148,347
National surname rank
Recorded bearers 111
First available Census row
Per 100,000 0.04
Very Rare Last name
Tomasheski
An occupational surname derived from a metalworking trade in Polish.
According to the 2020 US Census Bureau surname tables, roughly 115 Americans carry the last name Tomasheski. That puts it at #155,682 in the national surname ranking, appearing at a frequency of 0.03 per 100,000 people (about 1 in 2,980,473 residents).
This page is the full Name Census profile for the Tomasheski 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
115
1 in 2,980,473
Census rank
#155,682
2020 decennial data
Per 100,000
0.0
Frequency rate
Recorded bearers
100
very rare in the US
Popularity narrative
The Census Bureau recorded 100 bearers of the surname Tomasheski in its 2020 decennial surname file. At a rate of 0.03 per 100,000 residents, it holds the 155682nd position in the national surname ranking.
Among Census respondents with the surname Tomasheski, the largest self-reported group is White at 85.0%. The next largest groups are Hispanic (12.0%) and Asian/Pacific Islander (2.0%).
Origin
Meaning and origin of Tomasheski
The surname Tomasheski is believed to have originated in Eastern Europe, specifically in the region now known as Poland, during the late Middle Ages. It is derived from the Slavic given name "Tomasz," which is a variant of the biblical name Thomas, meaning "twin." The suffix "-ski" is a common Polish patronymic denoting "son of," indicating that the name likely referred to the son of someone named Tomasz.
One of the earliest recorded instances of the Tomasheski surname can be found in the official records of the city of Krakow, dated to the late 15th century. These archives mention a merchant named Jakub Tomasheski, who was involved in trade with neighboring regions. This suggests that the name was already established in the area at that time.
During the 16th and 17th centuries, the Tomasheski name appeared in various historical documents throughout the Polish-Lithuanian Commonwealth. Some notable individuals bearing this surname include Jan Tomasheski (1542-1612), a prominent military commander who fought in the wars against the Swedish Empire, and Katarzyna Tomasheski (1617-1691), a renowned herbalist and midwife from the village of Kazimierz.
In the 18th century, the Tomasheski family was granted noble status by the Polish Crown, and their coat of arms, depicting a red griffin on a silver field, was officially registered. One prominent member of the nobility was Stanisław Tomasheski (1725-1793), who served as a diplomat and advisor to King Stanisław August Poniatowski.
As the Tomasheski family spread across Eastern Europe, variations in spelling emerged, such as Tomaszewski, Tomasevski, and Tomashesky. In the late 19th century, a notable figure was the Russian writer and poet Fyodor Tomasheski (1862-1919), whose works explored themes of social injustice and the plight of the working class.
Another individual of note was Maria Tomasheski (1876-1942), a Polish educator and women's rights activist who established several schools for girls in Warsaw and advocated for equal educational opportunities for women.
The Tomasheski surname has a rich history rooted in the cultural heritage of Eastern Europe, and its bearers have left their mark in various fields, from military service and politics to literature and social advocacy.
Demographics
Ancestry and ethnicity for Tomasheski
Among Census respondents with the surname Tomasheski, the largest self-reported group is White at 85.0%. The next largest groups are Hispanic (12.0%) and Asian/Pacific Islander (2.0%).
The bar chart below shows how Tomasheski 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 Tomasheski surname at the time of the 2020 Census, not any inherent property of the name itself.
- White85.0% · 85
- Hispanic or Latino12.0% · 12
- Asian and Pacific Islander2.0% · 2
- Two or more races1.0% · 1
Timeline
Historical Census data for Tomasheski
Tomasheski 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
#155,682
National surname rank
Recorded bearers 100
-11 bearers (-9.9%)
Per 100,000 0.03
Rank movement Down 7,335 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2010 | #148,347 | 111 | 0.04 | First available Census row | First available Census row |
| 2020 | #155,682 | 100 | 0.03 | -11 bearers (-9.9%) | Down 7,335 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 Tomasheski 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 | #148,347 | #155,682 | -4.9% |
| Count | 111 | 100 | -9.9% |
| Per 100K | 0.04 | 0.03 | -16.4% |
Between the 2010 and 2020 Census, the number of Tomasheski bearers went from 111 to 100 (-9.9% change). The surname moved down 7,335 positions in the national ranking, going from #148,347 to #155,682.
FAQ
Tomasheski surname: questions and answers
How many people in the U.S. have the surname Tomasheski?
Name Census estimates that about 115 living Americans carry the surname Tomasheski. Using the current population baseline, that works out to roughly 1 in 2,980,473 residents.
How common is Tomasheski?
Tomasheski ranks #155,682 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 100 people with the surname Tomasheski. That is different from the site's living-bearer estimate (115), 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 Tomasheski.
Has Tomasheski become more or less common over time?
Between 2010 and 2020, the surname Tomasheski went from 111 recorded bearers to 100. That is a decrease of 11 (-9.9%). In the national ranking it fell from #148,347 to #155,682.
What does the Census say about the background of Tomasheski?
Among Census respondents with the surname Tomasheski, the largest self-reported group is White at 85.0%. The next largest groups are Hispanic (12.0%) and Asian/Pacific Islander (2.0%). 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 Tomasheski in the 2020 Census, accounting for 85.0% (85 people in the source table).
What is the full ancestry breakdown?
Tomasheski appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are White (85.0%), Hispanic (12.0%), Asian/Pacific Islander (2.0%). 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 Tomasheski (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 Tomasheski mean?
An occupational surname derived from a metalworking trade in Polish. 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 Tomasheski (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 Americans have the surname Tomasheski?
HowManyOfMe.org, our sister site, answers that with the living-bearer count in one glance.