2000
#150,436
National surname rank
Recorded bearers 100
First available Census row
Per 100,000 0.04
Very Rare Last name
Ciamillo
An Italian surname derived from the Latin word "camillus" meaning a servant or attendant.
According to the 2020 US Census Bureau surname tables, roughly 118 Americans carry the last name Ciamillo. 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 Ciamillo 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 Ciamillo 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 Ciamillo, the largest self-reported group is White at 98.1%. The next largest groups are Hispanic (1.9%).
Origin
Meaning and origin of Ciamillo
The surname Ciamillo originates from Italy, traced back to the late 13th century. It is believed to have roots in the Sicilian dialect, potentially derived from the Italian word "ciamiḍḍu," meaning a small room or closet. This suggests the name may have been associated with a person who lived or worked in such a space.
One of the earliest recorded instances of the name Ciamillo can be found in a historical document from the city of Palermo, dated 1287. This document mentions a "Nicolo Ciamillo," indicating the presence of the surname in Sicily during that period.
In the 15th century, the Ciamillo name was also documented in various records from the regions of Campania and Calabria in southern Italy. These records include mentions of individuals such as "Giovanni Ciamillo" (born around 1420) and "Tommaso Ciamillo" (born around 1460), suggesting the surname had spread to other parts of the Italian peninsula.
The name Ciamillo has been connected to several notable individuals throughout history. One such figure was Francesco Ciamillo, a renowned artist and architect from Naples who lived in the late 16th century. His works, including the Church of Santa Maria della Consolazione in Capua, have left a lasting impact on Italian architecture.
Another noteworthy bearer of the surname was Girolamo Ciamillo, a prominent Italian jurist and legal scholar from the 17th century. He authored several influential works on civil law and served as a judge in the Kingdom of Naples.
In the 18th century, the Ciamillo name gained further recognition with the achievements of Antonio Ciamillo, a celebrated painter and fresco artist from Calabria. His works adorned numerous churches and palaces throughout southern Italy, showcasing his exceptional talent and artistic mastery.
The 19th century saw the rise of Vincenzo Ciamillo, a distinguished philosopher and educator from Naples. He made significant contributions to the field of ethics and moral philosophy, leaving a lasting legacy through his writings and teachings.
While the surname Ciamillo has its roots in Italy, it has since spread to other parts of the world, carried by individuals and families who have migrated over the centuries. However, its origins and historical significance remain deeply rooted in the Italian peninsula, particularly in the southern regions where it first emerged and flourished.
Demographics
Ancestry and ethnicity for Ciamillo
Among Census respondents with the surname Ciamillo, the largest self-reported group is White at 98.1%. The next largest groups are Hispanic (1.9%).
The bar chart below shows how Ciamillo 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 Ciamillo surname at the time of the 2020 Census, not any inherent property of the name itself.
- White98.1% · 101
- Hispanic or Latino1.9% · 2
Timeline
Historical Census data for Ciamillo
Ciamillo 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
#149,395
National surname rank
Recorded bearers 110
+10 bearers (+10.0%)
Per 100,000 0.04
Rank movement Up 1,041 places
2020
#154,182
National surname rank
Recorded bearers 103
-7 bearers (-6.4%)
Per 100,000 0.03
Rank movement Down 4,787 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 | #149,395 | 110 | 0.04 | +10 bearers (+10.0%) | Up 1,041 places |
| 2020 | #154,182 | 103 | 0.03 | -7 bearers (-6.4%) | Down 4,787 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 Ciamillo 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 | #149,395 | #154,182 | -3.2% |
| Count | 110 | 103 | -6.4% |
| Per 100K | 0.04 | 0.03 | -13.9% |
Between the 2010 and 2020 Census, the number of Ciamillo bearers went from 110 to 103 (-6.4% change). The surname moved down 4,787 positions in the national ranking, going from #149,395 to #154,182.
FAQ
Ciamillo surname: questions and answers
How many people in the U.S. have the surname Ciamillo?
Name Census estimates that about 118 living Americans carry the surname Ciamillo. Using the current population baseline, that works out to roughly 1 in 2,904,698 residents.
How common is Ciamillo?
Ciamillo 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 Ciamillo. 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 Ciamillo.
Has Ciamillo become more or less common over time?
Between 2010 and 2020, the surname Ciamillo went from 110 recorded bearers to 103. That is a decrease of 7 (-6.4%). In the national ranking it fell from #149,395 to #154,182.
What does the Census say about the background of Ciamillo?
Among Census respondents with the surname Ciamillo, the largest self-reported group is White at 98.1%. The next largest groups are 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 Ciamillo in the 2020 Census, accounting for 98.1% (101 people in the source table).
What is the full ancestry breakdown?
Ciamillo appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are White (98.1%), 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 Ciamillo (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 Ciamillo mean?
An Italian surname derived from the Latin word "camillus" meaning a servant or attendant. 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 Ciamillo (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 Ciamillo?
For a quick modern estimate, our sister site HowManyOfMe.org answers that in one glance, with the living-bearer count front and centre.