2000
#150,436
National surname rank
Recorded bearers 100
First available Census row
Per 100,000 0.04
Very Rare Last name
Iossi
A surname derived from a personal name of Greek or Slavic origin.
According to the 2020 US Census Bureau surname tables, roughly 130 Americans carry the last name Iossi. That puts it at #147,221 in the national surname ranking, appearing at a frequency of 0.04 per 100,000 people (about 1 in 2,636,572 residents).
This page is the full Name Census profile for the Iossi 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
130
1 in 2,636,572
Census rank
#147,221
2020 decennial data
Per 100,000
0.0
Frequency rate
Recorded bearers
113
very rare in the US
Popularity narrative
The Census Bureau recorded 113 bearers of the surname Iossi in its 2020 decennial surname file. At a rate of 0.04 per 100,000 residents, it holds the 147221st position in the national surname ranking.
Among Census respondents with the surname Iossi, the largest self-reported group is White at 93.8%. The next largest groups are Hispanic (2.7%) and American Indian/Alaska Native (1.8%).
Origin
Meaning and origin of Iossi
The surname IOSSI has its origins in Italy, tracing back to the 13th century. Originally, it was a patronymic name derived from the personal name Iosso, which itself was a diminutive of the biblical name Joseph. The name was particularly prevalent in the regions of Tuscany and Lombardy.
One of the earliest documented occurrences of the surname can be found in the Florentine tax records of 1276, where a certain Iosso di Berto is mentioned. This suggests that the name had already become established as a hereditary surname by that time.
In the 14th century, the variant spelling Iossi appeared in the records of the city of Siena. A notable bearer of the name from this period was Gherardo Iossi, a prominent merchant and banker who was active in the early 1300s.
The IOSSI name can also be traced back to the town of Iossi, located in the province of Bergamo in Lombardy. It is likely that some branches of the family adopted the surname based on their place of origin or residence.
By the 16th century, the IOSSI name had spread to other parts of Italy. One notable figure was Giovanni Battista Iossi, a renowned painter from Verona who lived from 1545 to 1615. His works can still be found in various churches and galleries throughout Italy.
Another historical figure of note is Girolamo Iossi, a Venetian diplomat and writer who lived from 1628 to 1692. He is best known for his work "Istoria della Veneta Repubblica," a comprehensive history of the Republic of Venice.
In the 18th century, the IOSSI name gained prominence in the field of music. Antonio Iossi, a composer and violinist from Naples, lived from 1718 to 1788 and contributed to the development of the Neapolitan opera tradition.
The 19th century saw the rise of Vincenzo Iossi, an Italian patriot and revolutionary who played a significant role in the Risorgimento, the movement for Italian unification. He was born in 1825 and was active in the struggles against Austrian rule.
While the IOSSI surname has its roots firmly planted in Italy, it has since spread to other parts of the world through immigration and diaspora. However, its historical origins and significance remain deeply rooted in the Italian peninsula, where it has left an indelible mark over the centuries.
Demographics
Ancestry and ethnicity for Iossi
Among Census respondents with the surname Iossi, the largest self-reported group is White at 93.8%. The next largest groups are Hispanic (2.7%) and American Indian/Alaska Native (1.8%).
The bar chart below shows how Iossi 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 Iossi surname at the time of the 2020 Census, not any inherent property of the name itself.
- White93.8% · 106
- Hispanic or Latino2.7% · 3
- American Indian and Alaska Native1.8% · 2
- Black or African American0.9% · 1
- Two or more races0.9% · 1
Timeline
Historical Census data for Iossi
Iossi 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
#150,452
National surname rank
Recorded bearers 109
+9 bearers (+9.0%)
Per 100,000 0.04
Rank movement Down 16 places
2020
#147,221
National surname rank
Recorded bearers 113
+4 bearers (+3.7%)
Per 100,000 0.04
Rank movement Up 3,231 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2000 | #150,436 | 100 | 0.04 | First available Census row | First available Census row |
| 2010 | #150,452 | 109 | 0.04 | +9 bearers (+9.0%) | Down 16 places |
| 2020 | #147,221 | 113 | 0.04 | +4 bearers (+3.7%) | Up 3,231 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 Iossi 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 | #150,452 | #147,221 | 2.1% |
| Count | 109 | 113 | 3.7% |
| Per 100K | 0.04 | 0.04 | -5.5% |
Between the 2010 and 2020 Census, the number of Iossi bearers went from 109 to 113 (+3.7% change). The surname moved up 3,231 positions in the national ranking, going from #150,452 to #147,221.
FAQ
Iossi surname: questions and answers
How many people in the U.S. have the surname Iossi?
Name Census estimates that about 130 living Americans carry the surname Iossi. Using the current population baseline, that works out to roughly 1 in 2,636,572 residents.
How common is Iossi?
Iossi ranks #147,221 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 113 people with the surname Iossi. That is different from the site's living-bearer estimate (130), 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 Iossi.
Has Iossi become more or less common over time?
Between 2010 and 2020, the surname Iossi went from 109 recorded bearers to 113. That is an increase of 4 (+3.7%). In the national ranking it rose from #150,452 to #147,221.
What does the Census say about the background of Iossi?
Among Census respondents with the surname Iossi, the largest self-reported group is White at 93.8%. The next largest groups are Hispanic (2.7%) and American Indian/Alaska Native (1.8%). 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 Iossi in the 2020 Census, accounting for 93.8% (106 people in the source table).
What is the full ancestry breakdown?
Iossi appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are White (93.8%), Hispanic (2.7%), American Indian/Alaska Native (1.8%). 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 Iossi (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 Iossi mean?
A surname derived from a personal name of Greek or Slavic origin. 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 Iossi (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 people are called Iossi?
Find out how many people have the last name Iossi on our sister site HowManyOfMe.org — a quick modern estimate with the living-bearer count front and centre.