2000
#136,783
National surname rank
Recorded bearers 113
First available Census row
Per 100,000 0.04
Very Rare Last name
Gradnigo
A habitational surname likely of Italian origin referring to someone from Gradnigo.
According to the 2020 US Census Bureau surname tables, roughly 153 Americans carry the last name Gradnigo. That puts it at #132,523 in the national surname ranking, appearing at a frequency of 0.04 per 100,000 people (about 1 in 2,240,224 residents).
This page is the full Name Census profile for the Gradnigo 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
153
1 in 2,240,224
Census rank
#132,523
2020 decennial data
Per 100,000
0.0
Frequency rate
Recorded bearers
133
very rare in the US
Popularity narrative
The Census Bureau recorded 133 bearers of the surname Gradnigo in its 2020 decennial surname file. At a rate of 0.04 per 100,000 residents, it holds the 132523rd position in the national surname ranking.
Among Census respondents with the surname Gradnigo, the largest self-reported group is Black at 86.5%. The next largest groups are Hispanic (4.5%) and Two or More Races (4.5%).
Origin
Meaning and origin of Gradnigo
The surname Gradnigo originates from Italy, with roots dating back to the 12th century. It is believed to have originated in the Veneto region, particularly in the city of Venice. The name is derived from the Italian word "grando," which means "large" or "grand," suggesting a connection to a prominent family or individual of significant stature.
One of the earliest recorded references to the Gradnigo surname can be found in the "Cronaca Veneziana" (Venetian Chronicle), a historical manuscript dating back to the 13th century. This document mentions several members of the Gradnigo family who held influential positions within the Republic of Venice.
During the Renaissance period, the Gradnigo family gained prominence in the artistic and cultural spheres of Venice. Notably, Pietro Gradnigo (1501-1572) was a renowned Venetian painter and architect who contributed to the design and decoration of several churches and palaces in the city.
In the 17th century, Girolamo Gradnigo (1619-1684) was a respected Venetian diplomat and statesman. He served as the ambassador of the Republic of Venice to various European courts and played a crucial role in negotiating treaties and maintaining diplomatic relations.
Another notable figure from the Gradnigo family was Antonio Gradnigo (1741-1818), a Venetian nobleman and military leader. He fought in several campaigns during the Napoleonic Wars and was awarded the prestigious title of "Count" for his bravery and service to the Venetian Republic.
The surname Gradnigo has also been associated with several place names in the Veneto region, such as the village of Gradnico and the nearby castle called "Castello di Gradnigo," which was once owned by a branch of the family.
Throughout history, the Gradnigo name has been recorded with various spellings, including Grandigo, Gragnico, and Gragdnigo, reflecting the linguistic evolution and regional variations of the Italian language.
Demographics
Ancestry and ethnicity for Gradnigo
Among Census respondents with the surname Gradnigo, the largest self-reported group is Black at 86.5%. The next largest groups are Hispanic (4.5%) and Two or More Races (4.5%).
The bar chart below shows how Gradnigo 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 Gradnigo surname at the time of the 2020 Census, not any inherent property of the name itself.
- Black or African American86.5% · 115
- Hispanic or Latino4.5% · 6
- Two or more races4.5% · 6
- White3.8% · 5
- American Indian and Alaska Native0.8% · 1
Timeline
Historical Census data for Gradnigo
Gradnigo 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
#127,494
National surname rank
Recorded bearers 134
+21 bearers (+18.6%)
Per 100,000 0.05
Rank movement Up 9,289 places
2020
#132,523
National surname rank
Recorded bearers 133
-1 bearers (-0.7%)
Per 100,000 0.04
Rank movement Down 5,029 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2000 | #136,783 | 113 | 0.04 | First available Census row | First available Census row |
| 2010 | #127,494 | 134 | 0.05 | +21 bearers (+18.6%) | Up 9,289 places |
| 2020 | #132,523 | 133 | 0.04 | -1 bearers (-0.7%) | Down 5,029 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 Gradnigo 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 | #127,494 | #132,523 | -3.9% |
| Count | 134 | 133 | -0.7% |
| Per 100K | 0.05 | 0.04 | -11.0% |
Between the 2010 and 2020 Census, the number of Gradnigo bearers went from 134 to 133 (-0.7% change). The surname moved down 5,029 positions in the national ranking, going from #127,494 to #132,523.
FAQ
Gradnigo surname: questions and answers
How many people in the U.S. have the surname Gradnigo?
Name Census estimates that about 153 living Americans carry the surname Gradnigo. Using the current population baseline, that works out to roughly 1 in 2,240,224 residents.
How common is Gradnigo?
Gradnigo ranks #132,523 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 133 people with the surname Gradnigo. That is different from the site's living-bearer estimate (153), 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 Gradnigo.
Has Gradnigo become more or less common over time?
Between 2010 and 2020, the surname Gradnigo went from 134 recorded bearers to 133. That is a decrease of 1 (-0.7%). In the national ranking it fell from #127,494 to #132,523.
What does the Census say about the background of Gradnigo?
Among Census respondents with the surname Gradnigo, the largest self-reported group is Black at 86.5%. The next largest groups are Hispanic (4.5%) and Two or More Races (4.5%). 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?
Black is the largest self-reported group for the surname Gradnigo in the 2020 Census, accounting for 86.5% (115 people in the source table).
What is the full ancestry breakdown?
Gradnigo appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are Black (86.5%), Hispanic (4.5%), Two or More Races (4.5%). 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 Gradnigo (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 Gradnigo mean?
A habitational surname likely of Italian origin referring to someone from Gradnigo. 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 Gradnigo (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 Gradnigo?
For a quick modern take, check how many Americans have the surname Gradnigo on our sister site HowManyOfMe.org.