2000
#134,037
National surname rank
Recorded bearers 116
First available Census row
Per 100,000 0.04
Very Rare Last name
Colagrossi
An Italian surname referring to someone from the town of Colle Grosso.
According to the 2020 US Census Bureau surname tables, roughly 133 Americans carry the last name Colagrossi. That puts it at #145,028 in the national surname ranking, appearing at a frequency of 0.04 per 100,000 people (about 1 in 2,577,100 residents).
This page is the full Name Census profile for the Colagrossi 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
133
1 in 2,577,100
Census rank
#145,028
2020 decennial data
Per 100,000
0.0
Frequency rate
Recorded bearers
116
very rare in the US
Popularity narrative
The Census Bureau recorded 116 bearers of the surname Colagrossi in its 2020 decennial surname file. At a rate of 0.04 per 100,000 residents, it holds the 145028th position in the national surname ranking.
Among Census respondents with the surname Colagrossi, the largest self-reported group is White at 82.8%. The next largest groups are Two or More Races (10.3%) and Hispanic (3.4%).
Origin
Meaning and origin of Colagrossi
The surname Colagrossi is of Italian origin, believed to have originated in the regions of Lazio and Abruzzo during the late medieval period. It is derived from the Italian words "colla" meaning "hill" and "grosso" meaning "big" or "large," suggesting the name was initially given to someone who lived or worked on a large hill.
The earliest known record of the name Colagrossi dates back to the 13th century, appearing in historical documents from the town of Frascati, located in the Alban Hills near Rome. In these records, the name is spelled "Collagrossi," which is likely an earlier variation of the modern spelling.
One notable historical figure bearing the Colagrossi surname was Pietro Colagrossi (1470-1548), a Roman Catholic cardinal and diplomat who served under Pope Clement VII. He played a significant role in the negotiations during the Sack of Rome in 1527 and was later appointed as the Bishop of Palestrina.
Another prominent individual was Filippo Colagrossi (1620-1688), an Italian painter and architect who worked in Rome during the Baroque period. He is best known for his architectural designs, including the Church of San Nicola da Tolentino in Rome.
In the 18th century, the Colagrossi family gained prominence in the wine-making industry in the Lazio region. Vincenzo Colagrossi (1735-1812) was a renowned winemaker whose vineyards produced some of the finest wines in the area.
Moving into the 19th century, Giuseppe Colagrossi (1810-1886) was a distinguished Italian lawyer and politician who served as a deputy in the Parliaments of the Kingdom of Italy and the Kingdom of Sardinia.
Another notable figure was Emilio Colagrossi (1878-1942), an Italian military officer who played a significant role in the Italian colonial campaigns in Libya and East Africa during the early 20th century.
While the Colagrossi surname is predominantly found in Italy, particularly in the regions of Lazio and Abruzzo, it has also spread to other parts of the world through immigration. However, the name's roots can be traced back to the Italian peninsula, where it has a rich historical legacy spanning several centuries.
Demographics
Ancestry and ethnicity for Colagrossi
Among Census respondents with the surname Colagrossi, the largest self-reported group is White at 82.8%. The next largest groups are Two or More Races (10.3%) and Hispanic (3.4%).
The bar chart below shows how Colagrossi 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 Colagrossi surname at the time of the 2020 Census, not any inherent property of the name itself.
- White82.8% · 96
- Two or more races10.3% · 12
- Hispanic or Latino3.4% · 4
- Asian and Pacific Islander1.7% · 2
- Black or African American0.9% · 1
- American Indian and Alaska Native0.9% · 1
Timeline
Historical Census data for Colagrossi
Colagrossi 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
#133,863
National surname rank
Recorded bearers 126
+10 bearers (+8.6%)
Per 100,000 0.04
Rank movement Up 174 places
2020
#145,028
National surname rank
Recorded bearers 116
-10 bearers (-7.9%)
Per 100,000 0.04
Rank movement Down 11,165 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2000 | #134,037 | 116 | 0.04 | First available Census row | First available Census row |
| 2010 | #133,863 | 126 | 0.04 | +10 bearers (+8.6%) | Up 174 places |
| 2020 | #145,028 | 116 | 0.04 | -10 bearers (-7.9%) | Down 11,165 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 Colagrossi 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 | #133,863 | #145,028 | -8.3% |
| Count | 126 | 116 | -7.9% |
| Per 100K | 0.04 | 0.04 | -3.0% |
Between the 2010 and 2020 Census, the number of Colagrossi bearers went from 126 to 116 (-7.9% change). The surname moved down 11,165 positions in the national ranking, going from #133,863 to #145,028.
FAQ
Colagrossi surname: questions and answers
How many people in the U.S. have the surname Colagrossi?
Name Census estimates that about 133 living Americans carry the surname Colagrossi. Using the current population baseline, that works out to roughly 1 in 2,577,100 residents.
How common is Colagrossi?
Colagrossi ranks #145,028 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 116 people with the surname Colagrossi. That is different from the site's living-bearer estimate (133), 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 Colagrossi.
Has Colagrossi become more or less common over time?
Between 2010 and 2020, the surname Colagrossi went from 126 recorded bearers to 116. That is a decrease of 10 (-7.9%). In the national ranking it fell from #133,863 to #145,028.
What does the Census say about the background of Colagrossi?
Among Census respondents with the surname Colagrossi, the largest self-reported group is White at 82.8%. The next largest groups are Two or More Races (10.3%) and Hispanic (3.4%). 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 Colagrossi in the 2020 Census, accounting for 82.8% (96 people in the source table).
What is the full ancestry breakdown?
Colagrossi appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are White (82.8%), Two or More Races (10.3%), Hispanic (3.4%). 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 Colagrossi (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 Colagrossi mean?
An Italian surname referring to someone from the town of Colle Grosso. 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 Colagrossi (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 Colagrossi?
For a quick modern estimate, our sister site HowManyOfMe.org answers that in one glance, with the living-bearer count front and centre.