2000
#135,837
National surname rank
Recorded bearers 114
First available Census row
Per 100,000 0.04
Very Rare Last name
Mastroddi
An Italian surname meaning "master" or "teacher."
According to the 2020 US Census Bureau surname tables, roughly 112 Americans carry the last name Mastroddi. That puts it at #156,269 in the national surname ranking, appearing at a frequency of 0.03 per 100,000 people (about 1 in 3,060,307 residents).
This page is the full Name Census profile for the Mastroddi 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
112
1 in 3,060,307
Census rank
#156,269
2020 decennial data
Per 100,000
0.0
Frequency rate
Recorded bearers
98
very rare in the US
Popularity narrative
The Census Bureau recorded 98 bearers of the surname Mastroddi in its 2020 decennial surname file. At a rate of 0.03 per 100,000 residents, it holds the 156269th position in the national surname ranking.
Among Census respondents with the surname Mastroddi, the largest self-reported group is White at 89.8%. The next largest groups are Hispanic (8.2%) and Two or More Races (2.0%).
Origin
Meaning and origin of Mastroddi
The surname Mastroddi originates from Italy, specifically the region of Campania. It is believed to have emerged around the 14th century, during the Renaissance period. The name is derived from the Italian word "mastro," which means "master" or "skilled craftsman," and "oddi," a surname suffix indicating a family name.
The earliest recorded instances of the Mastroddi surname can be traced back to historical documents from the town of Avellino, located in the province of Avellino, Campania. These records suggest that the name was initially associated with families involved in skilled trades or artisanal professions.
One of the earliest known individuals bearing the Mastroddi surname was Giovanni Mastroddi, a renowned sculptor from Avellino who lived in the late 15th century. His works can still be admired in various churches and public buildings throughout the region.
In the 16th century, the Mastroddi family gained prominence in the town of Montella, also located in the province of Avellino. Historical records mention Niccolò Mastroddi, a respected landowner and local official who played a significant role in the town's governance during the mid-1500s.
During the 17th century, the Mastroddi surname spread to other parts of Italy, including the neighboring regions of Basilicata and Puglia. In Naples, the capital of Campania, a notable figure named Gian Battista Mastroddi was a renowned architect who contributed to the design and construction of several churches and palaces in the city.
In the 18th century, the Mastroddi family produced several notable scholars and intellectuals. Francesco Antonio Mastroddi, born in 1721 in Avellino, was a renowned philosopher and theologian who authored several influential works on metaphysics and ethics.
Another prominent individual with the Mastroddi surname was Gaetano Mastroddi, a lawyer and political activist who lived in the late 18th and early 19th centuries. He was a vocal supporter of the Italian unification movement and played a role in the Risorgimento, the struggle for Italian independence and unity.
Throughout its history, the Mastroddi surname has been associated with various professions, including skilled trades, architecture, academia, and law. While the name has its roots in the Campania region, it has since spread to other parts of Italy and beyond, carried by families who have made significant contributions to their respective fields.
Demographics
Ancestry and ethnicity for Mastroddi
Among Census respondents with the surname Mastroddi, the largest self-reported group is White at 89.8%. The next largest groups are Hispanic (8.2%) and Two or More Races (2.0%).
The bar chart below shows how Mastroddi 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 Mastroddi surname at the time of the 2020 Census, not any inherent property of the name itself.
- White89.8% · 88
- Hispanic or Latino8.2% · 8
- Two or more races2.0% · 2
Timeline
Historical Census data for Mastroddi
Mastroddi 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
#148,347
National surname rank
Recorded bearers 111
-3 bearers (-2.6%)
Per 100,000 0.04
Rank movement Down 12,510 places
2020
#156,269
National surname rank
Recorded bearers 98
-13 bearers (-11.7%)
Per 100,000 0.03
Rank movement Down 7,922 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2000 | #135,837 | 114 | 0.04 | First available Census row | First available Census row |
| 2010 | #148,347 | 111 | 0.04 | -3 bearers (-2.6%) | Down 12,510 places |
| 2020 | #156,269 | 98 | 0.03 | -13 bearers (-11.7%) | Down 7,922 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 Mastroddi 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 | #148,347 | #156,269 | -5.3% |
| Count | 111 | 98 | -11.7% |
| Per 100K | 0.04 | 0.03 | -18.0% |
Between the 2010 and 2020 Census, the number of Mastroddi bearers went from 111 to 98 (-11.7% change). The surname moved down 7,922 positions in the national ranking, going from #148,347 to #156,269.
FAQ
Mastroddi surname: questions and answers
How many people in the U.S. have the surname Mastroddi?
Name Census estimates that about 112 living Americans carry the surname Mastroddi. Using the current population baseline, that works out to roughly 1 in 3,060,307 residents.
How common is Mastroddi?
Mastroddi ranks #156,269 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 98 people with the surname Mastroddi. That is different from the site's living-bearer estimate (112), 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 Mastroddi.
Has Mastroddi become more or less common over time?
Between 2010 and 2020, the surname Mastroddi went from 111 recorded bearers to 98. That is a decrease of 13 (-11.7%). In the national ranking it fell from #148,347 to #156,269.
What does the Census say about the background of Mastroddi?
Among Census respondents with the surname Mastroddi, the largest self-reported group is White at 89.8%. The next largest groups are Hispanic (8.2%) and Two or More Races (2.0%). 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 Mastroddi in the 2020 Census, accounting for 89.8% (88 people in the source table).
What is the full ancestry breakdown?
Mastroddi appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are White (89.8%), Hispanic (8.2%), Two or More Races (2.0%). 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 Mastroddi (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 Mastroddi mean?
An Italian surname meaning "master" or "teacher." 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 Mastroddi (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 Mastroddi?
Our sister site HowManyOfMe.org answers how many people have the last name Mastroddi at a glance, with the living-bearer count up front.