2000
#56,826
National surname rank
Recorded bearers 336
First available Census row
Per 100,000 0.12
Very Rare Last name
Mazzio
An Italian surname derived from the Medieval personal name "Mattio", meaning gift of God.
According to the 2020 US Census Bureau surname tables, roughly 373 Americans carry the last name Mazzio. That puts it at #65,853 in the national surname ranking, appearing at a frequency of 0.11 per 100,000 people (about 1 in 918,912 residents).
This page is the full Name Census profile for the Mazzio 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
373
1 in 918,912
Census rank
#65,853
2020 decennial data
Per 100,000
0.1
Frequency rate
Recorded bearers
325
very rare in the US
Popularity narrative
The Census Bureau recorded 325 bearers of the surname Mazzio in its 2020 decennial surname file. At a rate of 0.11 per 100,000 residents, it holds the 65853rd position in the national surname ranking.
Among Census respondents with the surname Mazzio, the largest self-reported group is White at 90.8%. The next largest groups are Hispanic (4.6%) and Black (2.8%).
Origin
Meaning and origin of Mazzio
The surname Mazzio is of Italian origin, derived from the personal name Matteo or Mattia, which were Italian forms of the name Matthew. The name is believed to have originated in the central and southern regions of Italy, particularly around Rome and Naples, during the late Middle Ages.
One of the earliest recorded instances of the surname Mazzio dates back to the 14th century, when it appeared in historical records from the city of Naples. During this time, the name was often spelled as Mazzeo or Mazzio, reflecting the regional dialect and pronunciation.
In the 15th century, the surname Mazzio was found in various Italian manuscripts and documents, such as land ownership records and tax registers. It was particularly prevalent in the areas around Rome and the Lazio region, suggesting that the name had spread from its original southern roots.
The Mazzio surname has been associated with several notable individuals throughout history. One such person was Francesco Mazzio, a renowned painter from Naples who lived in the 16th century and was known for his religious artworks adorning churches in the city.
In the 17th century, the Mazzio family produced a prominent military figure, Girolamo Mazzio, who served as a captain in the Papal army and played a role in the defense of Rome during the Thirty Years' War.
Another historical figure bearing the Mazzio surname was Domenico Mazzio, a scholar and linguist born in Rome in the late 18th century. He made significant contributions to the study of ancient Greek and Latin texts and was a respected professor at the University of Rome.
During the 19th century, the Mazzio surname gained prominence in the field of architecture. Antonio Mazzio, born in 1822 in Naples, was a celebrated architect who designed several notable buildings in his native city, including the Church of San Francesco di Paola.
While the surname Mazzio has its roots in Italy, over time it has spread to other parts of the world, particularly to countries with significant Italian immigrant communities, such as the United States, Canada, and Argentina.
Demographics
Ancestry and ethnicity for Mazzio
Among Census respondents with the surname Mazzio, the largest self-reported group is White at 90.8%. The next largest groups are Hispanic (4.6%) and Black (2.8%).
The bar chart below shows how Mazzio 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 Mazzio surname at the time of the 2020 Census, not any inherent property of the name itself.
- White90.8% · 295
- Hispanic or Latino4.6% · 15
- Black or African American2.8% · 9
- Two or more races1.2% · 4
- Asian and Pacific Islander0.3% · 1
- American Indian and Alaska Native0.3% · 1
Timeline
Historical Census data for Mazzio
Mazzio 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
#56,836
National surname rank
Recorded bearers 359
+23 bearers (+6.8%)
Per 100,000 0.12
Rank movement Down 10 places
2020
#65,853
National surname rank
Recorded bearers 325
-34 bearers (-9.5%)
Per 100,000 0.11
Rank movement Down 9,017 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2000 | #56,826 | 336 | 0.12 | First available Census row | First available Census row |
| 2010 | #56,836 | 359 | 0.12 | +23 bearers (+6.8%) | Down 10 places |
| 2020 | #65,853 | 325 | 0.11 | -34 bearers (-9.5%) | Down 9,017 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 Mazzio 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 | #56,836 | #65,853 | -15.9% |
| Count | 359 | 325 | -9.5% |
| Per 100K | 0.12 | 0.11 | -9.4% |
Between the 2010 and 2020 Census, the number of Mazzio bearers went from 359 to 325 (-9.5% change). The surname moved down 9,017 positions in the national ranking, going from #56,836 to #65,853.
FAQ
Mazzio surname: questions and answers
How many people in the U.S. have the surname Mazzio?
Name Census estimates that about 373 living Americans carry the surname Mazzio. Using the current population baseline, that works out to roughly 1 in 918,912 residents.
How common is Mazzio?
Mazzio ranks #65,853 in the 2020 Census surname tables and is classified on this site as "Very Rare." The Census recorded the name at a frequency of 0.11 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 325 people with the surname Mazzio. That is different from the site's living-bearer estimate (373), which projects the surname's present-day count by applying the Census frequency rate to the current U.S. population.
What does 0.11 per 100,000 actually mean?
It is the Census Bureau's normalized frequency measure. A rate of 0.11 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 Mazzio.
Has Mazzio become more or less common over time?
Between 2010 and 2020, the surname Mazzio went from 359 recorded bearers to 325. That is a decrease of 34 (-9.5%). In the national ranking it fell from #56,836 to #65,853.
What does the Census say about the background of Mazzio?
Among Census respondents with the surname Mazzio, the largest self-reported group is White at 90.8%. The next largest groups are Hispanic (4.6%) and Black (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 Mazzio in the 2020 Census, accounting for 90.8% (295 people in the source table).
What is the full ancestry breakdown?
Mazzio appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are White (90.8%), Hispanic (4.6%), Black (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 Mazzio (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 Mazzio mean?
An Italian surname derived from the Medieval personal name "Mattio", meaning gift of God. 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 Mazzio (0.11 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 Mazzio?
For a quick modern estimate, our sister site HowManyOfMe.org answers that in one glance, with the living-bearer count front and centre.