2000
#43,290
National surname rank
Recorded bearers 470
First available Census row
Per 100,000 0.17
Very Rare Last name
Ostrosky
A surname derived from a location name associated with the Ukranian word "ostriv" meaning island.
According to the 2020 US Census Bureau surname tables, roughly 508 Americans carry the last name Ostrosky. That puts it at #50,912 in the national surname ranking, appearing at a frequency of 0.15 per 100,000 people (about 1 in 674,713 residents).
This page is the full Name Census profile for the Ostrosky 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
508
1 in 674,713
Census rank
#50,912
2020 decennial data
Per 100,000
0.1
Frequency rate
Recorded bearers
443
very rare in the US
Popularity narrative
The Census Bureau recorded 443 bearers of the surname Ostrosky in its 2020 decennial surname file. At a rate of 0.15 per 100,000 residents, it holds the 50912th position in the national surname ranking.
Among Census respondents with the surname Ostrosky, the largest self-reported group is White at 95.0%. The next largest groups are Hispanic (2.5%) and Asian/Pacific Islander (1.1%).
Origin
Meaning and origin of Ostrosky
The surname Ostrosky is of Polish origin, tracing its roots back to the 16th century. It is derived from the Polish word "ostrog," which means "spur" or "sharp point," suggesting that the name may have been initially associated with a geographical location or occupation related to spurs or sharp objects.
One of the earliest recorded mentions of the Ostrosky surname can be found in the Polish archives from the late 16th century, where it appears in various spellings such as Ostróżki, Ostróski, and Ostroški. These variations likely reflect regional dialects and the evolution of the name over time.
In the 17th century, a notable figure bearing the Ostrosky surname was Jan Ostrosky, a Polish military commander who played a significant role in the Polish-Muscovite War (1609-1618). He was born in 1582 and died in 1630, leaving a legacy as a skilled strategist and leader.
Another prominent individual with this surname was Józef Ostrosky, a Polish noble and landowner from the 18th century. He was born in 1715 and is known for his contributions to the development of agriculture and land management practices in his region.
Moving into the 19th century, Franciszek Ostrosky (1811-1888) was a respected Polish writer and journalist who played a crucial role in the Polish literary scene of his time. His works covered a wide range of topics, including political commentary and social issues.
In the early 20th century, Maria Ostrosky (1892-1978) was a renowned Polish sculptor and artist. Her works were exhibited in various galleries across Europe and received critical acclaim for their unique style and attention to detail.
Throughout its history, the Ostrosky surname has been associated with various places and regions within Poland, such as the towns of Ostróg, Ostrowiec, and Ostrów Wielkopolski, where the name may have originated or been particularly prevalent.
It is important to note that while this information provides a general historical overview of the Ostrosky surname, individual family histories and genealogical records may offer more specific details and nuances related to this surname's origins and evolution.
Demographics
Ancestry and ethnicity for Ostrosky
Among Census respondents with the surname Ostrosky, the largest self-reported group is White at 95.0%. The next largest groups are Hispanic (2.5%) and Asian/Pacific Islander (1.1%).
The bar chart below shows how Ostrosky 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 Ostrosky surname at the time of the 2020 Census, not any inherent property of the name itself.
- White95.0% · 421
- Hispanic or Latino2.5% · 11
- Asian and Pacific Islander1.1% · 5
- Two or more races1.1% · 5
- American Indian and Alaska Native0.2% · 1
Timeline
Historical Census data for Ostrosky
Ostrosky 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
#44,730
National surname rank
Recorded bearers 480
+10 bearers (+2.1%)
Per 100,000 0.16
Rank movement Down 1,440 places
2020
#50,912
National surname rank
Recorded bearers 443
-37 bearers (-7.7%)
Per 100,000 0.15
Rank movement Down 6,182 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2000 | #43,290 | 470 | 0.17 | First available Census row | First available Census row |
| 2010 | #44,730 | 480 | 0.16 | +10 bearers (+2.1%) | Down 1,440 places |
| 2020 | #50,912 | 443 | 0.15 | -37 bearers (-7.7%) | Down 6,182 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 Ostrosky 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 | #44,730 | #50,912 | -13.8% |
| Count | 480 | 443 | -7.7% |
| Per 100K | 0.16 | 0.15 | -7.4% |
Between the 2010 and 2020 Census, the number of Ostrosky bearers went from 480 to 443 (-7.7% change). The surname moved down 6,182 positions in the national ranking, going from #44,730 to #50,912.
FAQ
Ostrosky surname: questions and answers
How many people in the U.S. have the surname Ostrosky?
Name Census estimates that about 508 living Americans carry the surname Ostrosky. Using the current population baseline, that works out to roughly 1 in 674,713 residents.
How common is Ostrosky?
Ostrosky ranks #50,912 in the 2020 Census surname tables and is classified on this site as "Very Rare." The Census recorded the name at a frequency of 0.15 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 443 people with the surname Ostrosky. That is different from the site's living-bearer estimate (508), which projects the surname's present-day count by applying the Census frequency rate to the current U.S. population.
What does 0.15 per 100,000 actually mean?
It is the Census Bureau's normalized frequency measure. A rate of 0.15 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 Ostrosky.
Has Ostrosky become more or less common over time?
Between 2010 and 2020, the surname Ostrosky went from 480 recorded bearers to 443. That is a decrease of 37 (-7.7%). In the national ranking it fell from #44,730 to #50,912.
What does the Census say about the background of Ostrosky?
Among Census respondents with the surname Ostrosky, the largest self-reported group is White at 95.0%. The next largest groups are Hispanic (2.5%) and Asian/Pacific Islander (1.1%). 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 Ostrosky in the 2020 Census, accounting for 95.0% (421 people in the source table).
What is the full ancestry breakdown?
Ostrosky appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are White (95.0%), Hispanic (2.5%), Asian/Pacific Islander (1.1%). 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 Ostrosky (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 Ostrosky mean?
A surname derived from a location name associated with the Ukranian word "ostriv" meaning island. 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 Ostrosky (0.15 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 Ostrosky?
HowManyOfMe.org, our sister site, answers that with the living-bearer count in one glance.