2000
#148,244
National surname rank
Recorded bearers 102
First available Census row
Per 100,000 0.04
Very Rare Last name
Mastrostefano
A surname derived from "mastro" (master) and "Stefano" (Stephen), indicating a connection to an artisan or skilled worker.
According to the 2020 US Census Bureau surname tables, roughly 125 Americans carry the last name Mastrostefano. 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 Mastrostefano 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 Mastrostefano 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 Mastrostefano, the largest self-reported group is White at 89.0%. The next largest groups are Two or More Races (9.2%) and Black (0.9%).
Origin
Meaning and origin of Mastrostefano
The surname Mastrostefano has its origins in Italy, specifically in the southern regions of Calabria and Sicily. It is believed to have emerged during the medieval period, around the 12th to 14th centuries.
The name Mastrostefano is a compound word derived from the Italian words "mastro," meaning master or skilled craftsman, and "Stefano," which is the Italian form of the name Stephen. This suggests that the surname may have initially been used to identify an individual who was a skilled craftsman or artisan, perhaps associated with a trade or guild dedicated to Saint Stephen.
One of the earliest recorded instances of the name Mastrostefano can be found in a document from the city of Reggio Calabria, dated around 1350. This document mentions a certain "Mastro Stefano di Calabria," which translates to "Master Stephen of Calabria."
During the Renaissance period, the name Mastrostefano appears in several historical records and manuscripts, particularly those related to the arts and crafts guilds in southern Italy. Notable individuals bearing this surname include Antonio Mastrostefano, a renowned sculptor from Calabria who lived in the late 15th century and contributed to the decoration of several churches and cathedrals in the region.
In the 17th century, a branch of the Mastrostefano family settled in the town of Noto, Sicily, where they became prominent landowners and merchants. One of the most notable figures from this branch was Giovanni Battista Mastrostefano (1637-1718), a successful merchant and philanthropist who funded the construction of a hospital and a church in Noto.
Another prominent individual with the surname Mastrostefano was Vincenzo Mastrostefano (1801-1879), a renowned architect from Reggio Calabria who designed several notable buildings in his hometown, including the Palazzo Comunale (City Hall) and the Teatro Comunale (Municipal Theater).
During the 19th century, the Mastrostefano name also appeared in historical records from the city of Naples, where members of the family were involved in various professions, including law, medicine, and the arts. One notable figure from this period was Raffaele Mastrostefano (1828-1904), a renowned painter and art teacher who taught at the Accademia di Belle Arti di Napoli (Academy of Fine Arts in Naples).
While the surname Mastrostefano is not as widespread as some other Italian surnames, it continues to be found primarily in the southern regions of Italy, particularly in Calabria and Sicily, where it has a rich historical legacy dating back to the medieval period.
Demographics
Ancestry and ethnicity for Mastrostefano
Among Census respondents with the surname Mastrostefano, the largest self-reported group is White at 89.0%. The next largest groups are Two or More Races (9.2%) and Black (0.9%).
The bar chart below shows how Mastrostefano 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 Mastrostefano surname at the time of the 2020 Census, not any inherent property of the name itself.
- White89.0% · 97
- Two or more races9.2% · 10
- Black or African American0.9% · 1
- Hispanic or Latino0.9% · 1
Timeline
Historical Census data for Mastrostefano
Mastrostefano 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
#141,140
National surname rank
Recorded bearers 118
+16 bearers (+15.7%)
Per 100,000 0.04
Rank movement Up 7,104 places
2020
#150,205
National surname rank
Recorded bearers 109
-9 bearers (-7.6%)
Per 100,000 0.04
Rank movement Down 9,065 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2000 | #148,244 | 102 | 0.04 | First available Census row | First available Census row |
| 2010 | #141,140 | 118 | 0.04 | +16 bearers (+15.7%) | Up 7,104 places |
| 2020 | #150,205 | 109 | 0.04 | -9 bearers (-7.6%) | Down 9,065 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 Mastrostefano 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 | #141,140 | #150,205 | -6.4% |
| Count | 118 | 109 | -7.6% |
| Per 100K | 0.04 | 0.04 | -8.8% |
Between the 2010 and 2020 Census, the number of Mastrostefano bearers went from 118 to 109 (-7.6% change). The surname moved down 9,065 positions in the national ranking, going from #141,140 to #150,205.
FAQ
Mastrostefano surname: questions and answers
How many people in the U.S. have the surname Mastrostefano?
Name Census estimates that about 125 living Americans carry the surname Mastrostefano. Using the current population baseline, that works out to roughly 1 in 2,742,035 residents.
How common is Mastrostefano?
Mastrostefano 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 Mastrostefano. 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 Mastrostefano.
Has Mastrostefano become more or less common over time?
Between 2010 and 2020, the surname Mastrostefano went from 118 recorded bearers to 109. That is a decrease of 9 (-7.6%). In the national ranking it fell from #141,140 to #150,205.
What does the Census say about the background of Mastrostefano?
Among Census respondents with the surname Mastrostefano, the largest self-reported group is White at 89.0%. The next largest groups are Two or More Races (9.2%) and Black (0.9%). 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 Mastrostefano in the 2020 Census, accounting for 89.0% (97 people in the source table).
What is the full ancestry breakdown?
Mastrostefano appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are White (89.0%), Two or More Races (9.2%), Black (0.9%). 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 Mastrostefano (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 Mastrostefano mean?
A surname derived from "mastro" (master) and "Stefano" (Stephen), indicating a connection to an artisan or skilled worker. 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 Mastrostefano (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 Americans have the surname Mastrostefano?
HowManyOfMe.org, our sister site, answers that with the living-bearer count in one glance.