2000
#22,833
National surname rank
Recorded bearers 1,047
First available Census row
Per 100,000 0.39
Rare Last name
Interiano
A surname originating from Italy, referring to someone who lived near a boundary or border.
According to the 2020 US Census Bureau surname tables, roughly 2,585 Americans carry the last name Interiano. That puts it at #13,021 in the national surname ranking, appearing at a frequency of 0.75 per 100,000 people (about 1 in 132,594 residents).
This page is the full Name Census profile for the Interiano 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
2.6K
1 in 132,594
Census rank
#13,021
2020 decennial data
Per 100,000
0.8
Frequency rate
Recorded bearers
2.3K
rare in the US
Popularity narrative
The Census Bureau recorded 2,254 bearers of the surname Interiano in its 2020 decennial surname file. At a rate of 0.75 per 100,000 residents, it holds the 13021st position in the national surname ranking.
Among Census respondents with the surname Interiano, the largest self-reported group is Hispanic at 95.3%. The next largest groups are White (3.8%) and Black (0.6%).
Origin
Meaning and origin of Interiano
The surname Interiano originated in Italy, with its earliest known records dating back to the 13th century. It is believed to have derived from the Latin word "inter," meaning "between" or "among," possibly indicating that the original bearers of this name lived between two towns or villages.
One of the earliest recorded instances of the Interiano surname can be found in the historical archives of the city of Siena, where a certain Guglielmo Interiano is mentioned as a prominent merchant in the year 1278. This suggests that the name was already well-established in the Tuscan region during that time.
In the 14th century, the Interiano family gained prominence in the Republic of Florence, with several members holding influential positions within the city's government and guilds. Notably, Simone Interiano was a respected banker and diplomat who served as an ambassador to the court of Pope Clement VI in Avignon in 1342.
The name Interiano also appears in various medieval manuscripts and records from other parts of Italy, such as the Duchy of Milan and the Kingdom of Naples. One notable bearer was Francesco Interiano, a renowned jurist and legal scholar who served as a judge in the Neapolitan court during the 15th century.
In the 16th century, the Interiano family produced several accomplished artists and intellectuals. Pietro Interiano (1508-1578) was a celebrated painter and architect who worked extensively in Rome and other Italian cities, leaving behind a impressive body of work.
Another notable figure was Girolamo Interiano (1528-1609), a humanist scholar and philosopher who wrote extensively on topics ranging from rhetoric to moral philosophy. His treatise "La Vita dell'Huomo" (The Life of Man) was widely acclaimed and influential during the Renaissance period.
As the Interiano surname spread throughout Italy and beyond, it underwent various spelling variations, such as Interano, Interiani, and Interian. Some of these variations can be found in historical records from other European countries, possibly indicating the migration of individuals bearing this name.
In more recent times, the Interiano surname has been carried by individuals from various walks of life, including academics, artists, and professionals. However, the rich historical legacy of this name remains rooted in its Italian origins and the remarkable individuals who bore it throughout the centuries.
Demographics
Ancestry and ethnicity for Interiano
Among Census respondents with the surname Interiano, the largest self-reported group is Hispanic at 95.3%. The next largest groups are White (3.8%) and Black (0.6%).
The bar chart below shows how Interiano 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 Interiano surname at the time of the 2020 Census, not any inherent property of the name itself.
- Hispanic or Latino95.3% · 2,148
- White3.8% · 86
- Black or African American0.6% · 14
- Asian and Pacific Islander0.2% · 5
- Two or more races0.0% · 1
Timeline
Historical Census data for Interiano
Interiano 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
#15,434
National surname rank
Recorded bearers 1,898
+851 bearers (+81.3%)
Per 100,000 0.64
Rank movement Up 7,399 places
2020
#13,021
National surname rank
Recorded bearers 2,254
+356 bearers (+18.8%)
Per 100,000 0.75
Rank movement Up 2,413 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2000 | #22,833 | 1,047 | 0.39 | First available Census row | First available Census row |
| 2010 | #15,434 | 1,898 | 0.64 | +851 bearers (+81.3%) | Up 7,399 places |
| 2020 | #13,021 | 2,254 | 0.75 | +356 bearers (+18.8%) | Up 2,413 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 Interiano 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 | #15,434 | #13,021 | 15.6% |
| Count | 1,898 | 2,254 | 18.8% |
| Per 100K | 0.64 | 0.75 | 17.8% |
Between the 2010 and 2020 Census, the number of Interiano bearers went from 1,898 to 2,254 (+18.8% change). The surname moved up 2,413 positions in the national ranking, going from #15,434 to #13,021.
FAQ
Interiano surname: questions and answers
How many people in the U.S. have the surname Interiano?
Name Census estimates that about 2,585 living Americans carry the surname Interiano. Using the current population baseline, that works out to roughly 1 in 132,594 residents.
How common is Interiano?
Interiano ranks #13,021 in the 2020 Census surname tables and is classified on this site as "Rare." The Census recorded the name at a frequency of 0.75 per 100,000 residents, which is about 1 people out of every 100,000.
How many people with this surname were counted in the Census?
The raw 2020 Census file counted 2,254 people with the surname Interiano. That is different from the site's living-bearer estimate (2,585), which projects the surname's present-day count by applying the Census frequency rate to the current U.S. population.
What does 0.75 per 100,000 actually mean?
It is the Census Bureau's normalized frequency measure. A rate of 0.75 per 100,000 means that if you picked a random group of 100,000 U.S. residents, you would expect about 1 of them to have the surname Interiano.
Has Interiano become more or less common over time?
Between 2010 and 2020, the surname Interiano went from 1,898 recorded bearers to 2,254. That is an increase of 356 (+18.8%). In the national ranking it rose from #15,434 to #13,021.
What does the Census say about the background of Interiano?
Among Census respondents with the surname Interiano, the largest self-reported group is Hispanic at 95.3%. The next largest groups are White (3.8%) and Black (0.6%). 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?
Hispanic is the largest self-reported group for the surname Interiano in the 2020 Census, accounting for 95.3% (2,148 people in the source table).
What is the full ancestry breakdown?
Interiano appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are Hispanic (95.3%), White (3.8%), Black (0.6%). 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 Interiano (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 Interiano mean?
A surname originating from Italy, referring to someone who lived near a boundary or border. 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 Interiano (0.75 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 have the last name Interiano?
Find out how common the surname Interiano is on our sister site HowManyOfMe.org — a quick modern estimate with the living-bearer count front and centre.