2000
#107,565
National surname rank
Recorded bearers 153
First available Census row
Per 100,000 0.06
Very Rare Last name
Ermilio
An Italian surname derived from the given name Ermilio, a variant of Ermilio or Ermillio.
According to the 2020 US Census Bureau surname tables, roughly 210 Americans carry the last name Ermilio. That puts it at #104,276 in the national surname ranking, appearing at a frequency of 0.06 per 100,000 people (about 1 in 1,632,164 residents).
This page is the full Name Census profile for the Ermilio 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
210
1 in 1,632,164
Census rank
#104,276
2020 decennial data
Per 100,000
0.1
Frequency rate
Recorded bearers
183
very rare in the US
Popularity narrative
The Census Bureau recorded 183 bearers of the surname Ermilio in its 2020 decennial surname file. At a rate of 0.06 per 100,000 residents, it holds the 104276th position in the national surname ranking.
Among Census respondents with the surname Ermilio, the largest self-reported group is White at 88.5%. The next largest groups are Hispanic (6.6%) and Two or More Races (3.3%).
Origin
Meaning and origin of Ermilio
The surname "ERMILIO" is of Italian origin and dates back to the medieval period. It is believed to have originated in the regions of Tuscany and Umbria, where it was derived from the Italian name "Ermilio," which itself is a variant of the Latin name "Aemilius."
One of the earliest known references to the surname can be found in a 13th-century document from the city of Perugia, where a certain "Ermilio de Montepulciano" was mentioned. This suggests that the name may have been associated with the town of Montepulciano in Tuscany.
In the 14th century, records show that a family bearing the name Ermilio was prominent in the city of Siena. A notable member of this family was Matteo Ermilio, a renowned poet and scholar who lived from 1325 to 1388. His works were widely celebrated during the Renaissance period.
The name also appears in several historical documents from the 15th and 16th centuries, including records from the Vatican archives, where it is mentioned in connection with various ecclesiastical appointments and transactions. One such record from 1492 refers to a Franciscan friar named Giovanni Ermilio, who was appointed as a papal envoy to the court of King Ferdinand II of Aragon.
Another notable figure with the surname Ermilio was Girolamo Ermilio, a humanist scholar and professor of rhetoric who lived from 1486 to 1563. He taught at several prestigious universities in Italy, including the University of Padua and the Sapienza University of Rome.
In the 17th century, the name Ermilio was associated with a prominent family of bankers and merchants based in Naples. One of the most famous members of this family was Tommaso Ermilio, a wealthy financier who lived from 1620 to 1698 and was known for his philanthropic endeavors, including the founding of a hospice for orphaned children.
While the surname Ermilio is not among the most common in Italy today, it has a rich historical legacy and has been borne by several notable figures over the centuries, reflecting the cultural and intellectual contributions of those who carried this name.
Demographics
Ancestry and ethnicity for Ermilio
Among Census respondents with the surname Ermilio, the largest self-reported group is White at 88.5%. The next largest groups are Hispanic (6.6%) and Two or More Races (3.3%).
The bar chart below shows how Ermilio 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 Ermilio surname at the time of the 2020 Census, not any inherent property of the name itself.
- White88.5% · 162
- Hispanic or Latino6.6% · 12
- Two or more races3.3% · 6
- Asian and Pacific Islander1.1% · 2
- Black or African American0.5% · 1
Timeline
Historical Census data for Ermilio
Ermilio 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
#107,669
National surname rank
Recorded bearers 165
+12 bearers (+7.8%)
Per 100,000 0.06
Rank movement Down 104 places
2020
#104,276
National surname rank
Recorded bearers 183
+18 bearers (+10.9%)
Per 100,000 0.06
Rank movement Up 3,393 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2000 | #107,565 | 153 | 0.06 | First available Census row | First available Census row |
| 2010 | #107,669 | 165 | 0.06 | +12 bearers (+7.8%) | Down 104 places |
| 2020 | #104,276 | 183 | 0.06 | +18 bearers (+10.9%) | Up 3,393 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 Ermilio 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 | #107,669 | #104,276 | 3.2% |
| Count | 165 | 183 | 10.9% |
| Per 100K | 0.06 | 0.06 | 2.0% |
Between the 2010 and 2020 Census, the number of Ermilio bearers went from 165 to 183 (+10.9% change). The surname moved up 3,393 positions in the national ranking, going from #107,669 to #104,276.
FAQ
Ermilio surname: questions and answers
How many people in the U.S. have the surname Ermilio?
Name Census estimates that about 210 living Americans carry the surname Ermilio. Using the current population baseline, that works out to roughly 1 in 1,632,164 residents.
How common is Ermilio?
Ermilio ranks #104,276 in the 2020 Census surname tables and is classified on this site as "Very Rare." The Census recorded the name at a frequency of 0.06 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 183 people with the surname Ermilio. That is different from the site's living-bearer estimate (210), which projects the surname's present-day count by applying the Census frequency rate to the current U.S. population.
What does 0.06 per 100,000 actually mean?
It is the Census Bureau's normalized frequency measure. A rate of 0.06 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 Ermilio.
Has Ermilio become more or less common over time?
Between 2010 and 2020, the surname Ermilio went from 165 recorded bearers to 183. That is an increase of 18 (+10.9%). In the national ranking it rose from #107,669 to #104,276.
What does the Census say about the background of Ermilio?
Among Census respondents with the surname Ermilio, the largest self-reported group is White at 88.5%. The next largest groups are Hispanic (6.6%) and Two or More Races (3.3%). 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 Ermilio in the 2020 Census, accounting for 88.5% (162 people in the source table).
What is the full ancestry breakdown?
Ermilio appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are White (88.5%), Hispanic (6.6%), Two or More Races (3.3%). 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 Ermilio (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 Ermilio mean?
An Italian surname derived from the given name Ermilio, a variant of Ermilio or Ermillio. 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 Ermilio (0.06 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 Ermilio?
Our sister site HowManyOfMe.org answers how many Americans have the surname Ermilio at a glance, with the living-bearer count up front.