2010
#153,769
National surname rank
Recorded bearers 106
First available Census row
Per 100,000 0.04
Very Rare Last name
Castagnetti
An occupational surname derived from the Italian word for "chestnut" likely denoting a gatherer or seller of chestnuts.
According to the 2020 US Census Bureau surname tables, roughly 114 Americans carry the last name Castagnetti. That puts it at #156,005 in the national surname ranking, appearing at a frequency of 0.03 per 100,000 people (about 1 in 3,006,617 residents).
This page is the full Name Census profile for the Castagnetti 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
114
1 in 3,006,617
Census rank
#156,005
2020 decennial data
Per 100,000
0.0
Frequency rate
Recorded bearers
99
very rare in the US
Popularity narrative
The Census Bureau recorded 99 bearers of the surname Castagnetti in its 2020 decennial surname file. At a rate of 0.03 per 100,000 residents, it holds the 156005th position in the national surname ranking.
Among Census respondents with the surname Castagnetti, the largest self-reported group is White at 84.8%. The next largest groups are Two or More Races (8.1%) and Hispanic (6.1%).
Origin
Meaning and origin of Castagnetti
The surname Castagnetti originated in Italy. It is derived from the Italian word 'castagna', meaning chestnut tree. This points to the name having occupational origins, likely referring to someone who worked with chestnut trees or the chestnuts themselves, such as a gatherer, seller, or cultivator.
The earliest recorded instances of the name can be traced back to the 13th century in the Emilia-Romagna region of northern Italy. Historical records show variations in spelling, including Castagnetti, Castagnetti, and Castagnetto, indicating it was a well-established surname by this time.
In the 14th century, the name appeared in the tax records of the Republic of Venice, suggesting members of the Castagnetti family had migrated to this influential maritime city-state. This could have been due to trade opportunities or the spread of the family's chestnut-related business.
One notable early bearer of the name was Giovanni Castagnetti, a renowned painter from Mantua who lived in the late 15th century. His works can still be found in various churches and galleries across northern Italy.
In the 17th century, the Castagnetti name gained prominence in the world of music. Antonio Castagnetti (1592-1668) was a respected composer and organist who served at the Basilica di San Marco in Venice.
Moving into the 19th century, the name Castagnetti is associated with the Italian Risorgimento movement. Carlo Castagnetti (1810-1867) was a patriot and military leader who fought for the unification of Italy under the House of Savoy.
Another notable figure was the Italian mathematician and physicist Francesco Castagnetti (1862-1923), who made important contributions to the field of elasticity theory.
In more recent times, Gianni Castagnetti (1938-2021) was a prominent Italian football player and manager, most notably leading the Italian national team in the 1970s.
Throughout its history, the surname Castagnetti has remained predominantly concentrated in the northern regions of Italy, particularly Emilia-Romagna, Veneto, and Lombardy, reflecting its origins in this area.
Demographics
Ancestry and ethnicity for Castagnetti
Among Census respondents with the surname Castagnetti, the largest self-reported group is White at 84.8%. The next largest groups are Two or More Races (8.1%) and Hispanic (6.1%).
The bar chart below shows how Castagnetti 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 Castagnetti surname at the time of the 2020 Census, not any inherent property of the name itself.
- White84.8% · 84
- Two or more races8.1% · 8
- Hispanic or Latino6.1% · 6
- Asian and Pacific Islander1.0% · 1
Timeline
Historical Census data for Castagnetti
Castagnetti appears in 2 published Census surname files: 2010, 2020. The cards below show how the name's rank and bearer count changed across each release.
2020
#156,005
National surname rank
Recorded bearers 99
-7 bearers (-6.6%)
Per 100,000 0.03
Rank movement Down 2,236 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2010 | #153,769 | 106 | 0.04 | First available Census row | First available Census row |
| 2020 | #156,005 | 99 | 0.03 | -7 bearers (-6.6%) | Down 2,236 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 Castagnetti 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 | #153,769 | #156,005 | -1.5% |
| Count | 106 | 99 | -6.6% |
| Per 100K | 0.04 | 0.03 | -17.2% |
Between the 2010 and 2020 Census, the number of Castagnetti bearers went from 106 to 99 (-6.6% change). The surname moved down 2,236 positions in the national ranking, going from #153,769 to #156,005.
FAQ
Castagnetti surname: questions and answers
How many people in the U.S. have the surname Castagnetti?
Name Census estimates that about 114 living Americans carry the surname Castagnetti. Using the current population baseline, that works out to roughly 1 in 3,006,617 residents.
How common is Castagnetti?
Castagnetti ranks #156,005 in the 2020 Census surname tables and is classified on this site as "Very Rare." The Census recorded the name at a frequency of 0.03 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 99 people with the surname Castagnetti. That is different from the site's living-bearer estimate (114), which projects the surname's present-day count by applying the Census frequency rate to the current U.S. population.
What does 0.03 per 100,000 actually mean?
It is the Census Bureau's normalized frequency measure. A rate of 0.03 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 Castagnetti.
Has Castagnetti become more or less common over time?
Between 2010 and 2020, the surname Castagnetti went from 106 recorded bearers to 99. That is a decrease of 7 (-6.6%). In the national ranking it fell from #153,769 to #156,005.
What does the Census say about the background of Castagnetti?
Among Census respondents with the surname Castagnetti, the largest self-reported group is White at 84.8%. The next largest groups are Two or More Races (8.1%) and Hispanic (6.1%). 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 Castagnetti in the 2020 Census, accounting for 84.8% (84 people in the source table).
What is the full ancestry breakdown?
Castagnetti appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are White (84.8%), Two or More Races (8.1%), Hispanic (6.1%). 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 Castagnetti (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 Castagnetti mean?
An occupational surname derived from the Italian word for "chestnut" likely denoting a gatherer or seller of chestnuts. 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 Castagnetti (0.03 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 Castagnetti?
Want to know how many people have the last name Castagnetti? HowManyOfMe.org, our sister site, puts the living-bearer count front and centre.