2000
#123,314
National surname rank
Recorded bearers 129
First available Census row
Per 100,000 0.05
Very Rare Last name
Mastropieri
An Italian occupational surname meaning "master builder" or "skilled craftsman".
According to the 2020 US Census Bureau surname tables, roughly 119 Americans carry the last name Mastropieri. 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 Mastropieri 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 Mastropieri 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 Mastropieri, the largest self-reported group is White at 96.2%. The next largest groups are Two or More Races (3.8%).
Origin
Meaning and origin of Mastropieri
The surname Mastropieri originated in Italy during the medieval period. It is believed to have derived from the Greek word "mastro," meaning master or teacher, and the Italian word "piero," meaning stone or rock. This suggests that the name was initially associated with skilled stonemasons or builders.
The earliest records of the Mastropieri surname can be traced back to the 13th century in the region of Campania, particularly in the city of Naples and its surrounding areas. The name was prominent among families involved in the construction and restoration of churches, monasteries, and other significant architectural projects.
During the Renaissance period, several notable individuals bearing the Mastropieri surname made significant contributions to the arts and architecture. One such figure was Giovanni Battista Mastropieri (1529-1592), a renowned sculptor and architect from Naples. He was responsible for designing and constructing several prominent buildings, including the Chiesa di Santa Maria delle Grazie in Naples.
Another prominent figure was Luca Mastropieri (1560-1631), an Italian painter and architect from the town of Sorrento. He is known for his beautiful frescoes adorning the walls of the Chiesa del Gesù Nuovo in Naples, as well as his architectural designs for several palaces and churches in the region.
In the 18th century, the Mastropieri family produced a notable scholar and historian, Francesco Mastropieri (1723-1792). He was a professor of rhetoric and Greek literature at the University of Naples and authored several influential works on the history and culture of the region.
During the 19th century, the Mastropieri surname gained recognition in the field of law and politics. Vincenzo Mastropieri (1812-1887) was a prominent lawyer and politician who served as a member of the Italian Parliament and played a crucial role in the unification of Italy.
Throughout history, the Mastropieri surname has been associated with skilled craftsmen, artists, scholars, and professionals, reflecting the diverse talents and contributions of those who bore this name. While the name originated in Italy, it has since spread to other parts of the world due to migration and diaspora.
Demographics
Ancestry and ethnicity for Mastropieri
Among Census respondents with the surname Mastropieri, the largest self-reported group is White at 96.2%. The next largest groups are Two or More Races (3.8%).
The bar chart below shows how Mastropieri 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 Mastropieri surname at the time of the 2020 Census, not any inherent property of the name itself.
- White96.2% · 100
- Two or more races3.8% · 4
Timeline
Historical Census data for Mastropieri
Mastropieri 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
#144,141
National surname rank
Recorded bearers 115
-14 bearers (-10.9%)
Per 100,000 0.04
Rank movement Down 20,827 places
2020
#153,590
National surname rank
Recorded bearers 104
-11 bearers (-9.6%)
Per 100,000 0.03
Rank movement Down 9,449 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2000 | #123,314 | 129 | 0.05 | First available Census row | First available Census row |
| 2010 | #144,141 | 115 | 0.04 | -14 bearers (-10.9%) | Down 20,827 places |
| 2020 | #153,590 | 104 | 0.03 | -11 bearers (-9.6%) | Down 9,449 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 Mastropieri 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 | #144,141 | #153,590 | -6.6% |
| Count | 115 | 104 | -9.6% |
| Per 100K | 0.04 | 0.03 | -13.0% |
Between the 2010 and 2020 Census, the number of Mastropieri bearers went from 115 to 104 (-9.6% change). The surname moved down 9,449 positions in the national ranking, going from #144,141 to #153,590.
FAQ
Mastropieri surname: questions and answers
How many people in the U.S. have the surname Mastropieri?
Name Census estimates that about 119 living Americans carry the surname Mastropieri. Using the current population baseline, that works out to roughly 1 in 2,880,289 residents.
How common is Mastropieri?
Mastropieri 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 Mastropieri. 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 Mastropieri.
Has Mastropieri become more or less common over time?
Between 2010 and 2020, the surname Mastropieri went from 115 recorded bearers to 104. That is a decrease of 11 (-9.6%). In the national ranking it fell from #144,141 to #153,590.
What does the Census say about the background of Mastropieri?
Among Census respondents with the surname Mastropieri, the largest self-reported group is White at 96.2%. The next largest groups are Two or More Races (3.8%). 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 Mastropieri in the 2020 Census, accounting for 96.2% (100 people in the source table).
What is the full ancestry breakdown?
Mastropieri appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are White (96.2%), Two or More Races (3.8%). 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 Mastropieri (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 Mastropieri mean?
An Italian occupational surname meaning "master builder" or "skilled craftsman". 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 Mastropieri (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 are called Mastropieri?
Find out how many people have the surname Mastropieri on our sister site HowManyOfMe.org — a quick modern estimate with the living-bearer count front and centre.