2000
#38,992
National surname rank
Recorded bearers 532
First available Census row
Per 100,000 0.20
Very Rare Last name
Ianniello
An Italian surname derived from the given name Ianni, a diminutive of Giovanni.
According to the 2020 US Census Bureau surname tables, roughly 594 Americans carry the last name Ianniello. That puts it at #44,611 in the national surname ranking, appearing at a frequency of 0.17 per 100,000 people (about 1 in 577,028 residents).
This page is the full Name Census profile for the Ianniello 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
594
1 in 577,028
Census rank
#44,611
2020 decennial data
Per 100,000
0.2
Frequency rate
Recorded bearers
518
very rare in the US
Popularity narrative
The Census Bureau recorded 518 bearers of the surname Ianniello in its 2020 decennial surname file. At a rate of 0.17 per 100,000 residents, it holds the 44611th position in the national surname ranking.
Among Census respondents with the surname Ianniello, the largest self-reported group is White at 92.5%. The next largest groups are Hispanic (5.2%) and Two or More Races (1.7%).
Origin
Meaning and origin of Ianniello
The surname Ianniello has its origins in Italy, specifically in the southern regions of the country. It is believed to have emerged during the Middle Ages, around the 12th or 13th century. The name is derived from the Italian male given name Gianniello, which itself is a diminutive form of the name Giovanni, the Italian equivalent of John.
Ianniello is a patronymic surname, meaning it was originally formed by adding a suffix to the given name of the father or ancestor. In this case, the suffix "-ello" was added to Gianni, a shortened version of Giovanni, creating Ianniello. This naming convention was common practice in many parts of Italy during the medieval period.
One of the earliest recorded instances of the surname Ianniello can be found in the medieval Codex Diplomaticus Cavensis, a collection of documents related to the Benedictine monastery of Cava de' Tirreni in the Campania region of southern Italy. The name appears in a document dated 1253, referring to a certain Ianniello di Sorrento.
In the 14th century, there are records of a family named Ianniello residing in the town of Amalfi, also located in the Campania region. One notable member of this family was Giacomo Ianniello, a merchant and ship owner who lived around 1380.
Another early bearer of the surname was Pietro Ianniello, a scholar and professor of law who lived in Naples during the 15th century. He is mentioned in several historical documents from that era, including the chronicles of the Aragonese rulers of Naples.
During the Renaissance period, the name Ianniello gained prominence in the arts. One of the most famous individuals with this surname was Michelangelo Ianniello, a painter and sculptor who was active in Naples in the late 16th and early 17th centuries. His works can be found in several churches and museums in the city.
In the 18th century, there was a prominent Neapolitan family named Ianniello who played a significant role in the city's cultural and political life. One of its members, Gennaro Ianniello (1700-1778), was a respected jurist and served as a magistrate in the Neapolitan court system.
As the centuries passed, the surname Ianniello spread beyond its original southern Italian homeland and can now be found in various regions of the country, as well as in communities of Italian diaspora around the world.
Demographics
Ancestry and ethnicity for Ianniello
Among Census respondents with the surname Ianniello, the largest self-reported group is White at 92.5%. The next largest groups are Hispanic (5.2%) and Two or More Races (1.7%).
The bar chart below shows how Ianniello 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 Ianniello surname at the time of the 2020 Census, not any inherent property of the name itself.
- White92.5% · 479
- Hispanic or Latino5.2% · 27
- Two or more races1.7% · 9
- Black or African American0.4% · 2
- Asian and Pacific Islander0.2% · 1
Timeline
Historical Census data for Ianniello
Ianniello 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
#38,582
National surname rank
Recorded bearers 573
+41 bearers (+7.7%)
Per 100,000 0.19
Rank movement Up 410 places
2020
#44,611
National surname rank
Recorded bearers 518
-55 bearers (-9.6%)
Per 100,000 0.17
Rank movement Down 6,029 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2000 | #38,992 | 532 | 0.20 | First available Census row | First available Census row |
| 2010 | #38,582 | 573 | 0.19 | +41 bearers (+7.7%) | Up 410 places |
| 2020 | #44,611 | 518 | 0.17 | -55 bearers (-9.6%) | Down 6,029 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 Ianniello 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 | #38,582 | #44,611 | -15.6% |
| Count | 573 | 518 | -9.6% |
| Per 100K | 0.19 | 0.17 | -8.8% |
Between the 2010 and 2020 Census, the number of Ianniello bearers went from 573 to 518 (-9.6% change). The surname moved down 6,029 positions in the national ranking, going from #38,582 to #44,611.
FAQ
Ianniello surname: questions and answers
How many people in the U.S. have the surname Ianniello?
Name Census estimates that about 594 living Americans carry the surname Ianniello. Using the current population baseline, that works out to roughly 1 in 577,028 residents.
How common is Ianniello?
Ianniello ranks #44,611 in the 2020 Census surname tables and is classified on this site as "Very Rare." The Census recorded the name at a frequency of 0.17 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 518 people with the surname Ianniello. That is different from the site's living-bearer estimate (594), which projects the surname's present-day count by applying the Census frequency rate to the current U.S. population.
What does 0.17 per 100,000 actually mean?
It is the Census Bureau's normalized frequency measure. A rate of 0.17 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 Ianniello.
Has Ianniello become more or less common over time?
Between 2010 and 2020, the surname Ianniello went from 573 recorded bearers to 518. That is a decrease of 55 (-9.6%). In the national ranking it fell from #38,582 to #44,611.
What does the Census say about the background of Ianniello?
Among Census respondents with the surname Ianniello, the largest self-reported group is White at 92.5%. The next largest groups are Hispanic (5.2%) and Two or More Races (1.7%). 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 Ianniello in the 2020 Census, accounting for 92.5% (479 people in the source table).
What is the full ancestry breakdown?
Ianniello appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are White (92.5%), Hispanic (5.2%), Two or More Races (1.7%). 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 Ianniello (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 Ianniello mean?
An Italian surname derived from the given name Ianni, a diminutive of Giovanni. 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 Ianniello (0.17 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 Ianniello?
See how many Americans have the surname Ianniello on HowManyOfMe.org, our sister site built around that single question.