2000
#140,756
National surname rank
Recorded bearers 109
First available Census row
Per 100,000 0.04
Very Rare Last name
Giandonato
An Italian surname derived from the given name Giandomenico.
According to the 2020 US Census Bureau surname tables, roughly 132 Americans carry the last name Giandonato. That puts it at #145,757 in the national surname ranking, appearing at a frequency of 0.04 per 100,000 people (about 1 in 2,596,624 residents).
This page is the full Name Census profile for the Giandonato 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
132
1 in 2,596,624
Census rank
#145,757
2020 decennial data
Per 100,000
0.0
Frequency rate
Recorded bearers
115
very rare in the US
Popularity narrative
The Census Bureau recorded 115 bearers of the surname Giandonato in its 2020 decennial surname file. At a rate of 0.04 per 100,000 residents, it holds the 145757th position in the national surname ranking.
Among Census respondents with the surname Giandonato, the largest self-reported group is White at 96.5%. The next largest groups are Hispanic (3.5%).
Origin
Meaning and origin of Giandonato
The surname GIANDONATO is of Italian origin, specifically from the regions of Tuscany and Umbria, where it first appeared in historical records during the 13th century. It is believed to have derived from the medieval Italian name "Giandonato," which was a combination of the Italian names "Giovanni" (John) and "Donato" (Donated). This suggests that the name may have originated from a person who was named after these two saints or was given as a name at birth or baptism.
One of the earliest known records of the GIANDONATO surname can be found in a medieval manuscript from the city of Perugia, dated to around 1275. The document mentions a certain "Donato di Giandonato," who was a local landowner and merchant. This suggests that the surname had already been established by that time and was associated with a prominent family in the region.
Another notable historical figure with the GIANDONATO surname was Giandonato Giandonati (c. 1490-1559), a renowned Italian humanist and scholar from Siena. He was a professor of Greek and Latin at the University of Siena and authored several works on classical literature and philosophy. His writings and teachings influenced many of the intellectual and cultural movements of the Renaissance period.
In the 16th century, the GIANDONATO surname also appeared in various records from the Republic of Venice. One notable example is Giandonato Manini (c. 1535-1605), a Venetian merchant and diplomat who served as the ambassador of Venice to the Ottoman Empire. His accounts and writings provide valuable insights into the political and economic relations between Venice and the Ottoman Empire during that period.
During the 17th century, the GIANDONATO surname can be found in church records and historical documents from the Papal States, particularly in the regions of Umbria and Lazio. One notable figure from this time was Giandonato Massucci (1633-1700), a renowned Italian architect and sculptor who worked on several important projects in Rome, including the renovation of St. Peter's Basilica and the construction of the Palazzo Pamphilj.
Throughout the centuries, the GIANDONATO surname has also been associated with various place names and locations in Italy, such as the town of Giandonato in the province of Arezzo, Tuscany, and the village of Giandonato in the province of Perugia, Umbria. These place names likely derived from the surname itself or were named after individuals with the GIANDONATO name who were landowners or prominent figures in those areas.
Demographics
Ancestry and ethnicity for Giandonato
Among Census respondents with the surname Giandonato, the largest self-reported group is White at 96.5%. The next largest groups are Hispanic (3.5%).
The bar chart below shows how Giandonato 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 Giandonato surname at the time of the 2020 Census, not any inherent property of the name itself.
- White96.5% · 111
- Hispanic or Latino3.5% · 4
Timeline
Historical Census data for Giandonato
Giandonato 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
#135,593
National surname rank
Recorded bearers 124
+15 bearers (+13.8%)
Per 100,000 0.04
Rank movement Up 5,163 places
2020
#145,757
National surname rank
Recorded bearers 115
-9 bearers (-7.3%)
Per 100,000 0.04
Rank movement Down 10,164 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2000 | #140,756 | 109 | 0.04 | First available Census row | First available Census row |
| 2010 | #135,593 | 124 | 0.04 | +15 bearers (+13.8%) | Up 5,163 places |
| 2020 | #145,757 | 115 | 0.04 | -9 bearers (-7.3%) | Down 10,164 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 Giandonato 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 | #135,593 | #145,757 | -7.5% |
| Count | 124 | 115 | -7.3% |
| Per 100K | 0.04 | 0.04 | -3.8% |
Between the 2010 and 2020 Census, the number of Giandonato bearers went from 124 to 115 (-7.3% change). The surname moved down 10,164 positions in the national ranking, going from #135,593 to #145,757.
FAQ
Giandonato surname: questions and answers
How many people in the U.S. have the surname Giandonato?
Name Census estimates that about 132 living Americans carry the surname Giandonato. Using the current population baseline, that works out to roughly 1 in 2,596,624 residents.
How common is Giandonato?
Giandonato ranks #145,757 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 115 people with the surname Giandonato. That is different from the site's living-bearer estimate (132), 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 Giandonato.
Has Giandonato become more or less common over time?
Between 2010 and 2020, the surname Giandonato went from 124 recorded bearers to 115. That is a decrease of 9 (-7.3%). In the national ranking it fell from #135,593 to #145,757.
What does the Census say about the background of Giandonato?
Among Census respondents with the surname Giandonato, the largest self-reported group is White at 96.5%. The next largest groups are Hispanic (3.5%). 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 Giandonato in the 2020 Census, accounting for 96.5% (111 people in the source table).
What is the full ancestry breakdown?
Giandonato appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are White (96.5%), Hispanic (3.5%). 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 Giandonato (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 Giandonato mean?
An Italian surname derived from the given name Giandomenico. 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 Giandonato (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 Giandonato?
For a quick modern estimate, our sister site HowManyOfMe.org answers that in one glance, with the living-bearer count front and centre.