2010
#143,149
National surname rank
Recorded bearers 116
First available Census row
Per 100,000 0.04
Very Rare Last name
Ostapchuk
An Eastern European surname derived from the given name Ostap, the Slavic form of Eustace.
According to the 2020 US Census Bureau surname tables, roughly 164 Americans carry the last name Ostapchuk. That puts it at #125,732 in the national surname ranking, appearing at a frequency of 0.05 per 100,000 people (about 1 in 2,089,965 residents).
This page is the full Name Census profile for the Ostapchuk 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
164
1 in 2,089,965
Census rank
#125,732
2020 decennial data
Per 100,000
0.0
Frequency rate
Recorded bearers
143
very rare in the US
Popularity narrative
The Census Bureau recorded 143 bearers of the surname Ostapchuk in its 2020 decennial surname file. At a rate of 0.05 per 100,000 residents, it holds the 125732nd position in the national surname ranking.
Among Census respondents with the surname Ostapchuk, the largest self-reported group is White at 98.6%. The next largest groups are Two or More Races (1.4%).
Origin
Meaning and origin of Ostapchuk
The surname "OSTAPCHUK" is of Ukrainian origin, with its roots traced back to the medieval period in the region of Podolia, located in what is now western Ukraine. The name is derived from the Ukrainian given name "Ostap," which is a variant of the Greek name "Eustathios," meaning "prosperous" or "fruitful."
The earliest recorded instances of the surname "OSTAPCHUK" can be found in historical documents from the 16th and 17th centuries in the area around the city of Kamianets-Podilskyi. During this time, the region was under the control of the Polish-Lithuanian Commonwealth, and the surname may have been influenced by Polish naming conventions.
In the 18th and 19th centuries, the surname "OSTAPCHUK" began to spread throughout Ukraine and Russia, as families migrated and settled in different parts of the vast Russian Empire. One notable individual bearing this surname was Ivan Ostapchuk (1792-1857), a prominent Ukrainian writer and poet who was instrumental in preserving and promoting the Ukrainian language and cultural heritage.
Another significant figure was Hryhorii Ostapchuk (1818-1892), a Ukrainian philosopher and educator who taught at the University of Kharkiv and was known for his work in the fields of logic and metaphysics.
In the 20th century, the surname "OSTAPCHUK" gained further recognition with individuals such as Mykola Ostapchuk (1903-1980), a renowned Ukrainian artist and sculptor whose works celebrated the rich cultural traditions of his homeland.
Oleksandr Ostapchuk (1919-1995) was a prominent Ukrainian Soviet writer and literary critic, known for his novels and essays that explored the complexities of life in the Soviet Union.
More recently, Olena Ostapchuk (born 1986) is a Ukrainian track and field athlete who has won multiple medals in shot put competitions at the Olympic Games and World Championships.
While the surname "OSTAPCHUK" has its roots in Ukraine, it has also spread to other parts of the world through migration and diaspora communities. The name continues to hold significance as a testament to the rich cultural heritage and history of the Ukrainian people.
Demographics
Ancestry and ethnicity for Ostapchuk
Among Census respondents with the surname Ostapchuk, the largest self-reported group is White at 98.6%. The next largest groups are Two or More Races (1.4%).
The bar chart below shows how Ostapchuk 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 Ostapchuk surname at the time of the 2020 Census, not any inherent property of the name itself.
- White98.6% · 141
- Two or more races1.4% · 2
Timeline
Historical Census data for Ostapchuk
Ostapchuk 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
#125,732
National surname rank
Recorded bearers 143
+27 bearers (+23.3%)
Per 100,000 0.05
Rank movement Up 17,417 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2010 | #143,149 | 116 | 0.04 | First available Census row | First available Census row |
| 2020 | #125,732 | 143 | 0.05 | +27 bearers (+23.3%) | Up 17,417 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 Ostapchuk 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 | #125,732 | 12.2% |
| Count | 116 | 143 | 23.3% |
| Per 100K | 0.04 | 0.05 | 19.6% |
Between the 2010 and 2020 Census, the number of Ostapchuk bearers went from 116 to 143 (+23.3% change). The surname moved up 17,417 positions in the national ranking, going from #143,149 to #125,732.
FAQ
Ostapchuk surname: questions and answers
How many people in the U.S. have the surname Ostapchuk?
Name Census estimates that about 164 living Americans carry the surname Ostapchuk. Using the current population baseline, that works out to roughly 1 in 2,089,965 residents.
How common is Ostapchuk?
Ostapchuk ranks #125,732 in the 2020 Census surname tables and is classified on this site as "Very Rare." The Census recorded the name at a frequency of 0.05 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 143 people with the surname Ostapchuk. That is different from the site's living-bearer estimate (164), which projects the surname's present-day count by applying the Census frequency rate to the current U.S. population.
What does 0.05 per 100,000 actually mean?
It is the Census Bureau's normalized frequency measure. A rate of 0.05 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 Ostapchuk.
Has Ostapchuk become more or less common over time?
Between 2010 and 2020, the surname Ostapchuk went from 116 recorded bearers to 143. That is an increase of 27 (+23.3%). In the national ranking it rose from #143,149 to #125,732.
What does the Census say about the background of Ostapchuk?
Among Census respondents with the surname Ostapchuk, the largest self-reported group is White at 98.6%. The next largest groups are Two or More Races (1.4%). 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 Ostapchuk in the 2020 Census, accounting for 98.6% (141 people in the source table).
What is the full ancestry breakdown?
Ostapchuk appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are White (98.6%), Two or More Races (1.4%). 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 Ostapchuk (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 Ostapchuk mean?
An Eastern European surname derived from the given name Ostap, the Slavic form of Eustace. 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 Ostapchuk (0.05 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 Ostapchuk?
HowManyOfMe.org, our sister site, answers that with the living-bearer count in one glance.