2000
#143,847
National surname rank
Recorded bearers 106
First available Census row
Per 100,000 0.04
Very Rare Last name
Pietrasz
A Polish surname derived from the given name Peter.
According to the 2020 US Census Bureau surname tables, roughly 125 Americans carry the last name Pietrasz. That puts it at #150,205 in the national surname ranking, appearing at a frequency of 0.04 per 100,000 people (about 1 in 2,742,035 residents).
This page is the full Name Census profile for the Pietrasz 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
125
1 in 2,742,035
Census rank
#150,205
2020 decennial data
Per 100,000
0.0
Frequency rate
Recorded bearers
109
very rare in the US
Popularity narrative
The Census Bureau recorded 109 bearers of the surname Pietrasz in its 2020 decennial surname file. At a rate of 0.04 per 100,000 residents, it holds the 150205th position in the national surname ranking.
Among Census respondents with the surname Pietrasz, the largest self-reported group is White at 92.7%. The next largest groups are Asian/Pacific Islander (2.8%) and Two or More Races (2.8%).
Origin
Meaning and origin of Pietrasz
The surname PIETRASZ has its origins in Poland and is derived from the Polish personal name Piotr, which is a form of the name Peter. This name has its roots in the Greek word 'Petros', meaning 'rock' or 'stone'.
PIETRASZ is a patronymic surname, meaning it was originally formed by adding a possessive suffix to the personal name Piotr. This practice of creating surnames from personal names was common in many cultures and served to distinguish individuals and families from one another.
The earliest recorded instances of the surname PIETRASZ can be traced back to the 15th and 16th centuries in various historical records and documents from the Polish region. It is believed that the surname first emerged in the areas around the cities of Krakow and Warsaw, where it was commonly used.
One of the earliest known bearers of the PIETRASZ surname was Jan PIETRASZ, a merchant and landowner who lived in the city of Krakow in the late 15th century. He was involved in trade with other parts of Europe and his name appears in several business records from that time.
Another notable figure with this surname was Tomasz PIETRASZ, a Polish nobleman and military commander who fought in the Polish-Lithuanian wars against the Teutonic Knights in the early 16th century. He was honored for his bravery and leadership on the battlefield.
In the 17th century, the PIETRASZ family became known for their involvement in the Polish Reformation movement. Jerzy PIETRASZ, a Protestant minister and writer, was a prominent figure in the spread of Calvinism in Poland during this period.
As the Polish population dispersed throughout the world, the PIETRASZ surname spread to other countries as well. In the late 19th century, Pawel PIETRASZ, a Polish immigrant to the United States, established a successful farming community in the state of Wisconsin, where many of his descendants still reside today.
Another notable bearer of the PIETRASZ surname was Maria PIETRASZ, a Polish actress and theater director who was active in the early 20th century. She was renowned for her performances in Shakespearean plays and helped to promote Polish culture through her art.
Demographics
Ancestry and ethnicity for Pietrasz
Among Census respondents with the surname Pietrasz, the largest self-reported group is White at 92.7%. The next largest groups are Asian/Pacific Islander (2.8%) and Two or More Races (2.8%).
The bar chart below shows how Pietrasz 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 Pietrasz surname at the time of the 2020 Census, not any inherent property of the name itself.
- White92.7% · 101
- Asian and Pacific Islander2.8% · 3
- Two or more races2.8% · 3
- Black or African American0.9% · 1
- Hispanic or Latino0.9% · 1
Timeline
Historical Census data for Pietrasz
Pietrasz 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
#154,907
National surname rank
Recorded bearers 105
-1 bearers (-0.9%)
Per 100,000 0.04
Rank movement Down 11,060 places
2020
#150,205
National surname rank
Recorded bearers 109
+4 bearers (+3.8%)
Per 100,000 0.04
Rank movement Up 4,702 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2000 | #143,847 | 106 | 0.04 | First available Census row | First available Census row |
| 2010 | #154,907 | 105 | 0.04 | -1 bearers (-0.9%) | Down 11,060 places |
| 2020 | #150,205 | 109 | 0.04 | +4 bearers (+3.8%) | Up 4,702 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 Pietrasz 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 | #154,907 | #150,205 | 3.0% |
| Count | 105 | 109 | 3.8% |
| Per 100K | 0.04 | 0.04 | -8.8% |
Between the 2010 and 2020 Census, the number of Pietrasz bearers went from 105 to 109 (+3.8% change). The surname moved up 4,702 positions in the national ranking, going from #154,907 to #150,205.
FAQ
Pietrasz surname: questions and answers
How many people in the U.S. have the surname Pietrasz?
Name Census estimates that about 125 living Americans carry the surname Pietrasz. Using the current population baseline, that works out to roughly 1 in 2,742,035 residents.
How common is Pietrasz?
Pietrasz ranks #150,205 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 109 people with the surname Pietrasz. That is different from the site's living-bearer estimate (125), 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 Pietrasz.
Has Pietrasz become more or less common over time?
Between 2010 and 2020, the surname Pietrasz went from 105 recorded bearers to 109. That is an increase of 4 (+3.8%). In the national ranking it rose from #154,907 to #150,205.
What does the Census say about the background of Pietrasz?
Among Census respondents with the surname Pietrasz, the largest self-reported group is White at 92.7%. The next largest groups are Asian/Pacific Islander (2.8%) and Two or More Races (2.8%). 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 Pietrasz in the 2020 Census, accounting for 92.7% (101 people in the source table).
What is the full ancestry breakdown?
Pietrasz appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are White (92.7%), Asian/Pacific Islander (2.8%), Two or More Races (2.8%). 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 Pietrasz (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 Pietrasz mean?
A Polish surname derived from the given name 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 Pietrasz (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 have the surname Pietrasz?
HowManyOfMe.org, our sister site, answers that with the living-bearer count in one glance.