2010
#158,432
National surname rank
Recorded bearers 102
First available Census row
Per 100,000 0.03
Very Rare Last name
Iannetti
An Italian surname derived from a diminutive form of Ianuarius.
According to the 2020 US Census Bureau surname tables, roughly 118 Americans carry the last name Iannetti. That puts it at #154,182 in the national surname ranking, appearing at a frequency of 0.03 per 100,000 people (about 1 in 2,904,698 residents).
This page is the full Name Census profile for the Iannetti 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
118
1 in 2,904,698
Census rank
#154,182
2020 decennial data
Per 100,000
0.0
Frequency rate
Recorded bearers
103
very rare in the US
Popularity narrative
The Census Bureau recorded 103 bearers of the surname Iannetti in its 2020 decennial surname file. At a rate of 0.03 per 100,000 residents, it holds the 154182nd position in the national surname ranking.
Among Census respondents with the surname Iannetti, the largest self-reported group is White at 92.2%. The next largest groups are Two or More Races (3.9%) and Hispanic (1.9%).
Origin
Meaning and origin of Iannetti
The surname Iannetti originated in Italy, with records dating back to the 13th century. It is believed to have derived from the Italian personal name Ianno, which was a diminutive form of the name Giovanni, the Italian version of John. The suffix "-etti" was a common patronymic ending used to indicate "son of" or "little."
Iannetti is particularly prevalent in central and southern Italy, with early records showing the name concentrated in regions like Lazio, Abruzzo, and Campania. One of the earliest documented instances of the name can be found in a 1275 record from the town of Sulmona, in the province of L'Aquila, Abruzzo.
The Iannetti name has been associated with several notable figures throughout history. In the 16th century, Girolamo Iannetti (1522-1592) was a prominent Italian historian and philosopher from Siena. His works included a history of the city of Siena and a treatise on the nature of virtue.
Another Iannetti of note was Nicola Iannetti (1676-1753), a Neapolitan architect and engineer who designed several churches and palaces in Naples and its surrounding areas. His most famous work is the Chiesa di Santa Maria della Colonna, a Baroque-style church in Naples.
In the 19th century, Vincenzo Iannetti (1811-1892) was an Italian politician and lawyer who served as a deputy in the Parliament of the Kingdom of Italy. He was also a vocal advocate for the unification of Italy during the Risorgimento movement.
The name Iannetti also has connections to the arts. Giuseppe Iannetti (1836-1915) was an Italian painter and sculptor who worked primarily in Rome. His works included religious scenes and portraits, and he was known for his use of terracotta as a medium.
In more recent history, Ettore Iannetti (1909-1992) was an Italian film director and screenwriter active in the mid-20th century. He directed several notable films, including "Il Cammino della Speranza" (The Path of Hope) in 1950 and "La Strada Lunga un Anno" (The Long Road of a Year) in 1958.
Demographics
Ancestry and ethnicity for Iannetti
Among Census respondents with the surname Iannetti, the largest self-reported group is White at 92.2%. The next largest groups are Two or More Races (3.9%) and Hispanic (1.9%).
The bar chart below shows how Iannetti 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 Iannetti surname at the time of the 2020 Census, not any inherent property of the name itself.
- White92.2% · 95
- Two or more races3.9% · 4
- Hispanic or Latino1.9% · 2
- Asian and Pacific Islander1.9% · 2
Timeline
Historical Census data for Iannetti
Iannetti appears in 2 published Census surname files: 2010, 2020. The cards below show how the name's rank and bearer count changed across each release.
2020
#154,182
National surname rank
Recorded bearers 103
+1 bearers (+1.0%)
Per 100,000 0.03
Rank movement Up 4,250 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2010 | #158,432 | 102 | 0.03 | First available Census row | First available Census row |
| 2020 | #154,182 | 103 | 0.03 | +1 bearers (+1.0%) | Up 4,250 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 Iannetti 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 | #158,432 | #154,182 | 2.7% |
| Count | 102 | 103 | 1.0% |
| Per 100K | 0.03 | 0.03 | 14.9% |
Between the 2010 and 2020 Census, the number of Iannetti bearers went from 102 to 103 (+1.0% change). The surname moved up 4,250 positions in the national ranking, going from #158,432 to #154,182.
FAQ
Iannetti surname: questions and answers
How many people in the U.S. have the surname Iannetti?
Name Census estimates that about 118 living Americans carry the surname Iannetti. Using the current population baseline, that works out to roughly 1 in 2,904,698 residents.
How common is Iannetti?
Iannetti ranks #154,182 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 103 people with the surname Iannetti. That is different from the site's living-bearer estimate (118), 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 Iannetti.
Has Iannetti become more or less common over time?
Between 2010 and 2020, the surname Iannetti went from 102 recorded bearers to 103. That is an increase of 1 (+1.0%). In the national ranking it rose from #158,432 to #154,182.
What does the Census say about the background of Iannetti?
Among Census respondents with the surname Iannetti, the largest self-reported group is White at 92.2%. The next largest groups are Two or More Races (3.9%) and Hispanic (1.9%). 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 Iannetti in the 2020 Census, accounting for 92.2% (95 people in the source table).
What is the full ancestry breakdown?
Iannetti appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are White (92.2%), Two or More Races (3.9%), Hispanic (1.9%). 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 Iannetti (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 Iannetti mean?
An Italian surname derived from a diminutive form of Ianuarius. 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 Iannetti (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 share the surname Iannetti?
For a quick modern estimate, our sister site HowManyOfMe.org answers that in one glance, with the living-bearer count front and centre.