2010
#149,395
National surname rank
Recorded bearers 110
First available Census row
Per 100,000 0.04
Very Rare Last name
Rotondaro
An Italian surname meaning "round", "circular" or "rotund".
According to the 2020 US Census Bureau surname tables, roughly 125 Americans carry the last name Rotondaro. That puts it at #150,205 in the national surname ranking, appearing at a frequency of 0.04 per 100,000 people (about 1 in 2,742,035 residents).
This page is the full Name Census profile for the Rotondaro 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
125
1 in 2,742,035
Census rank
#150,205
2020 decennial data
Per 100,000
0.0
Frequency rate
Recorded bearers
109
very rare in the US
Popularity narrative
The Census Bureau recorded 109 bearers of the surname Rotondaro in its 2020 decennial surname file. At a rate of 0.04 per 100,000 residents, it holds the 150205th position in the national surname ranking.
Among Census respondents with the surname Rotondaro, the largest self-reported group is White at 78.9%. The next largest groups are Hispanic (12.8%) and Two or More Races (3.7%).
Origin
Meaning and origin of Rotondaro
The surname Rotondaro is of Italian origin, with its roots tracing back to the medieval period, specifically around the 12th to 15th centuries. The name is believed to have originated from the southern regions of Italy, particularly in areas such as Calabria, Sicily, and Campania.
Rotondaro is derived from the Italian word "rotondo," which means "round" or "circular." This suggests that the name may have been associated with individuals who lived in or near a circular or round-shaped geographical feature, such as a hill, a fort, or a settlement with a distinctive circular layout.
One of the earliest recorded instances of the surname Rotondaro can be found in the Catalogo dei Feudatari, a historical document from the 14th century that listed feudal landowners and their properties in the Kingdom of Naples. In this document, a certain "Matteo Rotondaro" was listed as a landowner in the region of Calabria.
During the Renaissance period, the Rotondaro name gained some prominence in the arts and literature. In the 16th century, a poet and scholar named Girolamo Rotondaro (1528-1592) gained recognition for his works, including a collection of poems titled "Rime Sacre" (Sacred Rhymes).
Another notable figure bearing the Rotondaro surname was Giulio Rotondaro (1605-1672), an Italian architect and engineer who is credited with the design and construction of several notable buildings and fortifications in Naples and other parts of Southern Italy during the 17th century.
In the 18th century, the Rotondaro family produced a prominent military figure named Giovanni Battista Rotondaro (1723-1789), who served as a general in the Neapolitan army and played a significant role in the defense of Naples during the Napoleonic Wars.
Moving forward to the 19th century, a lawyer and politician named Raffaele Rotondaro (1845-1912) made a name for himself as a member of the Italian parliament, representing the constituency of Catanzaro in Calabria.
Throughout history, the Rotondaro surname has also been associated with various place names and locations in Italy, such as the town of Rotondaro in the province of Matera, Basilicata, and the Rotondaro district in the city of Reggio Calabria.
Demographics
Ancestry and ethnicity for Rotondaro
Among Census respondents with the surname Rotondaro, the largest self-reported group is White at 78.9%. The next largest groups are Hispanic (12.8%) and Two or More Races (3.7%).
The bar chart below shows how Rotondaro 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 Rotondaro surname at the time of the 2020 Census, not any inherent property of the name itself.
- White78.9% · 86
- Hispanic or Latino12.8% · 14
- Two or more races3.7% · 4
- Asian and Pacific Islander1.8% · 2
- American Indian and Alaska Native1.8% · 2
- Black or African American0.9% · 1
Timeline
Historical Census data for Rotondaro
Rotondaro 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
#150,205
National surname rank
Recorded bearers 109
-1 bearers (-0.9%)
Per 100,000 0.04
Rank movement Down 810 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2010 | #149,395 | 110 | 0.04 | First available Census row | First available Census row |
| 2020 | #150,205 | 109 | 0.04 | -1 bearers (-0.9%) | Down 810 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 Rotondaro 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 | #150,205 | -0.5% |
| Count | 110 | 109 | -0.9% |
| Per 100K | 0.04 | 0.04 | -8.8% |
Between the 2010 and 2020 Census, the number of Rotondaro bearers went from 110 to 109 (-0.9% change). The surname moved down 810 positions in the national ranking, going from #149,395 to #150,205.
FAQ
Rotondaro surname: questions and answers
How many people in the U.S. have the surname Rotondaro?
Name Census estimates that about 125 living Americans carry the surname Rotondaro. Using the current population baseline, that works out to roughly 1 in 2,742,035 residents.
How common is Rotondaro?
Rotondaro ranks #150,205 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 109 people with the surname Rotondaro. That is different from the site's living-bearer estimate (125), 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 Rotondaro.
Has Rotondaro become more or less common over time?
Between 2010 and 2020, the surname Rotondaro went from 110 recorded bearers to 109. That is a decrease of 1 (-0.9%). In the national ranking it fell from #149,395 to #150,205.
What does the Census say about the background of Rotondaro?
Among Census respondents with the surname Rotondaro, the largest self-reported group is White at 78.9%. The next largest groups are Hispanic (12.8%) and Two or More Races (3.7%). 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 Rotondaro in the 2020 Census, accounting for 78.9% (86 people in the source table).
What is the full ancestry breakdown?
Rotondaro appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are White (78.9%), Hispanic (12.8%), Two or More Races (3.7%). 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 Rotondaro (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 Rotondaro mean?
An Italian surname meaning "round", "circular" or "rotund". 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 Rotondaro (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 share the surname Rotondaro?
HowManyOfMe.org, our sister site, answers that with the living-bearer count in one glance.