2000
#119,644
National surname rank
Recorded bearers 134
First available Census row
Per 100,000 0.05
Very Rare Last name
Aquadro
A surname denoting someone who lived near a water source.
According to the 2020 US Census Bureau surname tables, roughly 138 Americans carry the last name Aquadro. That puts it at #142,049 in the national surname ranking, appearing at a frequency of 0.04 per 100,000 people (about 1 in 2,483,727 residents).
This page is the full Name Census profile for the Aquadro 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
138
1 in 2,483,727
Census rank
#142,049
2020 decennial data
Per 100,000
0.0
Frequency rate
Recorded bearers
120
very rare in the US
Popularity narrative
The Census Bureau recorded 120 bearers of the surname Aquadro in its 2020 decennial surname file. At a rate of 0.04 per 100,000 residents, it holds the 142049th position in the national surname ranking.
Among Census respondents with the surname Aquadro, the largest self-reported group is White at 98.3%. The next largest groups are Hispanic (1.7%).
Origin
Meaning and origin of Aquadro
The surname Aquadro originated in Italy during the late medieval period, with roots tracing back to the northern regions of the country. It is believed to be derived from the Italian word "acqua," meaning water, and potentially linked to geographical features or occupations associated with bodies of water, such as rivers or canals.
One of the earliest known references to the Aquadro name can be found in historical documents from the 14th century in the city of Milan. Records from this period indicate that members of the Aquadro family held prominent positions within the local nobility and played influential roles in the city's affairs.
As time progressed, the Aquadro surname spread to other parts of Italy, with notable individuals emerging in various fields. In the 16th century, Giovanni Aquadro (1490-1572) was a renowned Italian architect and engineer who contributed to the design and construction of several notable buildings and infrastructure projects in the city of Rome.
During the Renaissance period, the Aquadro family also produced several accomplished artists and scholars. Luca Aquadro (1521-1597), a painter from Milan, gained recognition for his religious-themed works and frescoes adorning churches and cathedrals throughout northern Italy.
In the 18th century, the Aquadro surname gained prominence in the realm of academia and literature. Antonio Aquadro (1720-1798), a distinguished philosopher and writer from Venice, authored numerous works on ethics, political theory, and the role of reason in human affairs.
Another notable figure bearing the Aquadro name was Giulia Aquadro (1845-1920), a pioneering Italian educator and advocate for women's rights. She established several schools and educational programs aimed at empowering women and promoting their access to higher education.
While the Aquadro surname may have originated in Italy, it eventually spread to other parts of the world through migration and cultural exchange. However, its roots remain firmly tied to the rich history and traditions of the Italian peninsula, where the name first gained recognition and significance.
Demographics
Ancestry and ethnicity for Aquadro
Among Census respondents with the surname Aquadro, the largest self-reported group is White at 98.3%. The next largest groups are Hispanic (1.7%).
The bar chart below shows how Aquadro 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 Aquadro surname at the time of the 2020 Census, not any inherent property of the name itself.
- White98.3% · 118
- Hispanic or Latino1.7% · 2
Timeline
Historical Census data for Aquadro
Aquadro 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
#140,157
National surname rank
Recorded bearers 119
-15 bearers (-11.2%)
Per 100,000 0.04
Rank movement Down 20,513 places
2020
#142,049
National surname rank
Recorded bearers 120
+1 bearers (+0.8%)
Per 100,000 0.04
Rank movement Down 1,892 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2000 | #119,644 | 134 | 0.05 | First available Census row | First available Census row |
| 2010 | #140,157 | 119 | 0.04 | -15 bearers (-11.2%) | Down 20,513 places |
| 2020 | #142,049 | 120 | 0.04 | +1 bearers (+0.8%) | Down 1,892 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 Aquadro 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 | #140,157 | #142,049 | -1.3% |
| Count | 119 | 120 | 0.8% |
| Per 100K | 0.04 | 0.04 | 0.4% |
Between the 2010 and 2020 Census, the number of Aquadro bearers went from 119 to 120 (+0.8% change). The surname moved down 1,892 positions in the national ranking, going from #140,157 to #142,049.
FAQ
Aquadro surname: questions and answers
How many people in the U.S. have the surname Aquadro?
Name Census estimates that about 138 living Americans carry the surname Aquadro. Using the current population baseline, that works out to roughly 1 in 2,483,727 residents.
How common is Aquadro?
Aquadro ranks #142,049 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 120 people with the surname Aquadro. That is different from the site's living-bearer estimate (138), 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 Aquadro.
Has Aquadro become more or less common over time?
Between 2010 and 2020, the surname Aquadro went from 119 recorded bearers to 120. That is an increase of 1 (+0.8%). In the national ranking it fell from #140,157 to #142,049.
What does the Census say about the background of Aquadro?
Among Census respondents with the surname Aquadro, the largest self-reported group is White at 98.3%. The next largest groups are Hispanic (1.7%). 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 Aquadro in the 2020 Census, accounting for 98.3% (118 people in the source table).
What is the full ancestry breakdown?
Aquadro appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are White (98.3%), Hispanic (1.7%). 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 Aquadro (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 Aquadro mean?
A surname denoting someone who lived near a water source. 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 Aquadro (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 Aquadro?
If you just want to know how many Americans have the surname Aquadro, HowManyOfMe.org gives you the headline number in one glance.