2000
#150,436
National surname rank
Recorded bearers 100
First available Census row
Per 100,000 0.04
Very Rare Last name
Petrasko
A surname of Slavic origin meaning "son of Peter".
According to the 2020 US Census Bureau surname tables, roughly 119 Americans carry the last name Petrasko. That puts it at #153,590 in the national surname ranking, appearing at a frequency of 0.03 per 100,000 people (about 1 in 2,880,289 residents).
This page is the full Name Census profile for the Petrasko 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
119
1 in 2,880,289
Census rank
#153,590
2020 decennial data
Per 100,000
0.0
Frequency rate
Recorded bearers
104
very rare in the US
Popularity narrative
The Census Bureau recorded 104 bearers of the surname Petrasko in its 2020 decennial surname file. At a rate of 0.03 per 100,000 residents, it holds the 153590th position in the national surname ranking.
Among Census respondents with the surname Petrasko, the largest self-reported group is White at 95.2%. The next largest groups are Black (3.8%) and Two or More Races (1.0%).
Origin
Meaning and origin of Petrasko
The surname Petrasko has its origins in the Slavic region, specifically in modern-day Slovakia and the surrounding areas. It is derived from the Greek name "Petros," meaning "rock" or "stone," which later evolved into the Slavic form "Petr" or "Petro." The suffix "-sko" indicates a patronymic, suggesting that the name originally referred to the son or descendant of someone named Petr or Petro.
The earliest recorded instances of the name Petrasko can be traced back to the 16th century in historical documents and records from the region. One notable example is the mention of a certain Ján Petrasko in a land registry from the town of Prešov, dated around 1580.
During the 17th and 18th centuries, the name Petrasko appears in various church records and municipal documents across eastern Slovakia and parts of neighboring Poland. One particularly interesting reference is found in a genealogical record from the village of Bardejov, which mentions a family named Petrasko who were landowners and prominent members of the local community.
In terms of notable individuals bearing the surname Petrasko, one figure worth mentioning is Michal Petrasko (1736-1811), a Slovak priest and scholar who was known for his contributions to the study of Slavic languages and literature. Another notable Petrasko was Ján Petrasko (1845-1920), a Slovak politician and activist who played a significant role in the national revival movement and advocated for the rights of Slovaks within the Austro-Hungarian Empire.
Other historical figures with the surname Petrasko include:
1. Andrej Petrasko (1795-1872), a Slovak Catholic priest and writer who authored several religious texts and poems.
2. Štefan Petrasko (1857-1932), a Slovak lawyer and judge who served in the Austro-Hungarian judicial system.
3. Mária Petrasko (1892-1968), a Slovak painter and artist known for her landscape and still-life paintings.
4. Pavol Petrasko (1911-1989), a Slovak architect who designed several notable buildings in Bratislava and other cities.
5. Ján Petrasko (1924-2001), a Slovak writer and journalist who documented the experiences of Slovaks during World War II and the communist era.
While the surname Petrasko is not among the most common in Slovakia today, it has a rich historical presence and is deeply rooted in the cultural and linguistic heritage of the region.
Demographics
Ancestry and ethnicity for Petrasko
Among Census respondents with the surname Petrasko, the largest self-reported group is White at 95.2%. The next largest groups are Black (3.8%) and Two or More Races (1.0%).
The bar chart below shows how Petrasko 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 Petrasko surname at the time of the 2020 Census, not any inherent property of the name itself.
- White95.2% · 99
- Black or African American3.8% · 4
- Two or more races1.0% · 1
Timeline
Historical Census data for Petrasko
Petrasko 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
#152,628
National surname rank
Recorded bearers 107
+7 bearers (+7.0%)
Per 100,000 0.04
Rank movement Down 2,192 places
2020
#153,590
National surname rank
Recorded bearers 104
-3 bearers (-2.8%)
Per 100,000 0.03
Rank movement Down 962 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2000 | #150,436 | 100 | 0.04 | First available Census row | First available Census row |
| 2010 | #152,628 | 107 | 0.04 | +7 bearers (+7.0%) | Down 2,192 places |
| 2020 | #153,590 | 104 | 0.03 | -3 bearers (-2.8%) | Down 962 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 Petrasko 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 | #152,628 | #153,590 | -0.6% |
| Count | 107 | 104 | -2.8% |
| Per 100K | 0.04 | 0.03 | -13.0% |
Between the 2010 and 2020 Census, the number of Petrasko bearers went from 107 to 104 (-2.8% change). The surname moved down 962 positions in the national ranking, going from #152,628 to #153,590.
FAQ
Petrasko surname: questions and answers
How many people in the U.S. have the surname Petrasko?
Name Census estimates that about 119 living Americans carry the surname Petrasko. Using the current population baseline, that works out to roughly 1 in 2,880,289 residents.
How common is Petrasko?
Petrasko ranks #153,590 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 104 people with the surname Petrasko. That is different from the site's living-bearer estimate (119), 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 Petrasko.
Has Petrasko become more or less common over time?
Between 2010 and 2020, the surname Petrasko went from 107 recorded bearers to 104. That is a decrease of 3 (-2.8%). In the national ranking it fell from #152,628 to #153,590.
What does the Census say about the background of Petrasko?
Among Census respondents with the surname Petrasko, the largest self-reported group is White at 95.2%. The next largest groups are Black (3.8%) and Two or More Races (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 Petrasko in the 2020 Census, accounting for 95.2% (99 people in the source table).
What is the full ancestry breakdown?
Petrasko appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are White (95.2%), Black (3.8%), Two or More Races (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 Petrasko (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 Petrasko mean?
A surname of Slavic origin meaning "son of Peter". 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 Petrasko (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 last name Petrasko?
Find out how many people have the last name Petrasko on our sister site HowManyOfMe.org — a quick modern estimate with the living-bearer count front and centre.