2000
#121,058
National surname rank
Recorded bearers 132
First available Census row
Per 100,000 0.05
Very Rare Last name
Greggo
An Italian surname derived from the given name Gregorio.
According to the 2020 US Census Bureau surname tables, roughly 138 Americans carry the last name Greggo. 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 Greggo 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 Greggo 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 Greggo, the largest self-reported group is White at 100.0%.
Origin
Meaning and origin of Greggo
The surname GREGGO is believed to have originated in Italy, specifically in the region of Tuscany. It is thought to be derived from the Italian word "grego," which means "Greek" or "from Greece." This suggests that the surname may have been initially given to individuals who had Greek ancestry or who migrated from Greece to Italy during the Middle Ages.
One of the earliest recorded instances of the surname GREGGO can be found in the Florentine Codex, a 16th-century manuscript that documented the history and culture of the Aztec people in Mexico. The document mentions a Tuscan merchant named Lorenzo GREGGO, who traveled to the Americas in the 1520s and is believed to have been among the first Europeans to establish trade relations with the Aztec Empire.
In the 14th century, a notable figure named Matteo GREGGO was a renowned artist and architect from Siena, Italy. He is credited with designing several churches and public buildings in the city, including the Palazzo Pubblico, which still stands today as a testament to his architectural prowess.
During the Renaissance period, a family of scholars and writers bearing the surname GREGGO gained prominence in Venice. One of the most famous members was Antonio GREGGO (1490-1568), who authored several influential works on philosophy and theology. His writings were widely circulated throughout Europe and helped shape the intellectual discourse of the time.
In the 18th century, a prominent figure named Giovanni GREGGO (1712-1789) served as a diplomat for the Republic of Venice. He represented the city-state's interests in various European courts and played a crucial role in negotiating several important treaties and alliances.
Another notable individual with the surname GREGGO was Maria GREGGO (1856-1932), an Italian physician and feminist activist. She was one of the first women in Italy to earn a medical degree and dedicated her life to advocating for women's rights and improving healthcare access for underprivileged communities.
While the surname GREGGO is not as common today as it once was in Italy, it continues to hold a place in the country's rich cultural heritage, with its origins tracing back to the Middle Ages and the migration of Greek settlers to the region.
Demographics
Ancestry and ethnicity for Greggo
Among Census respondents with the surname Greggo, the largest self-reported group is White at 100.0%.
The bar chart below shows how Greggo 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 Greggo surname at the time of the 2020 Census, not any inherent property of the name itself.
- White100.0% · 120
Timeline
Historical Census data for Greggo
Greggo 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
#160,975
National surname rank
Recorded bearers 100
-32 bearers (-24.2%)
Per 100,000 0.03
Rank movement Down 39,917 places
2020
#142,049
National surname rank
Recorded bearers 120
+20 bearers (+20.0%)
Per 100,000 0.04
Rank movement Up 18,926 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2000 | #121,058 | 132 | 0.05 | First available Census row | First available Census row |
| 2010 | #160,975 | 100 | 0.03 | -32 bearers (-24.2%) | Down 39,917 places |
| 2020 | #142,049 | 120 | 0.04 | +20 bearers (+20.0%) | Up 18,926 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 Greggo 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 | #160,975 | #142,049 | 11.8% |
| Count | 100 | 120 | 20.0% |
| Per 100K | 0.03 | 0.04 | 33.8% |
Between the 2010 and 2020 Census, the number of Greggo bearers went from 100 to 120 (+20.0% change). The surname moved up 18,926 positions in the national ranking, going from #160,975 to #142,049.
FAQ
Greggo surname: questions and answers
How many people in the U.S. have the surname Greggo?
Name Census estimates that about 138 living Americans carry the surname Greggo. Using the current population baseline, that works out to roughly 1 in 2,483,727 residents.
How common is Greggo?
Greggo 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 Greggo. 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 Greggo.
Has Greggo become more or less common over time?
Between 2010 and 2020, the surname Greggo went from 100 recorded bearers to 120. That is an increase of 20 (+20.0%). In the national ranking it rose from #160,975 to #142,049.
What does the Census say about the background of Greggo?
Among Census respondents with the surname Greggo, the largest self-reported group is White at 100.0%. 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 Greggo in the 2020 Census, accounting for 100.0% (120 people in the source table).
What is the full ancestry breakdown?
Greggo appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are White (100.0%). 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 Greggo (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 Greggo mean?
An Italian surname derived from the given name Gregorio. 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 Greggo (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 have the last name Greggo?
Want to know how many people have the last name Greggo? HowManyOfMe.org, our sister site, puts the living-bearer count front and centre.