2010
#150,452
National surname rank
Recorded bearers 109
First available Census row
Per 100,000 0.04
Very Rare Last name
Bertonazzi
An Italian surname derived from a diminutive form of a first name.
According to the 2020 US Census Bureau surname tables, roughly 130 Americans carry the last name Bertonazzi. That puts it at #147,221 in the national surname ranking, appearing at a frequency of 0.04 per 100,000 people (about 1 in 2,636,572 residents).
This page is the full Name Census profile for the Bertonazzi 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
130
1 in 2,636,572
Census rank
#147,221
2020 decennial data
Per 100,000
0.0
Frequency rate
Recorded bearers
113
very rare in the US
Popularity narrative
The Census Bureau recorded 113 bearers of the surname Bertonazzi in its 2020 decennial surname file. At a rate of 0.04 per 100,000 residents, it holds the 147221st position in the national surname ranking.
Among Census respondents with the surname Bertonazzi, the largest self-reported group is White at 100.0%.
Origin
Meaning and origin of Bertonazzi
The surname Bertonazzi originated in Italy during the medieval period. It is derived from the Italian word "bertone," which means "a person of large stature." The name is thought to have originated in the northern regions of Italy, particularly in Lombardy and Veneto.
One of the earliest recorded instances of the name Bertonazzi can be found in the "Codice Diplomatico Longobardo," a collection of documents from the Lombard Kingdom, which ruled large parts of Italy from the 6th to the 8th centuries. The name appears in a document dated 752 AD, referring to a landowner named Bertone di Azzano.
In the 11th century, the name Bertonazzi appeared in the "Chronicon Veronense," a historical chronicle of the city of Verona. The chronicle mentions a nobleman named Guglielmo Bertonazzi, who was a prominent figure in the local government during that period.
During the Renaissance, the Bertonazzi family was known for their artistic contributions. One notable figure was Antonio Bertonazzi (1475-1542), a painter and sculptor from Milan. His works can still be found in various churches and museums across Italy.
In the 17th century, the name Bertonazzi gained prominence in the field of medicine. Giovanni Battista Bertonazzi (1612-1672) was a renowned physician from Padua who made significant contributions to the understanding of anatomy and physiology.
Another notable figure was Giacomo Bertonazzi (1734-1804), a military officer from Verona who served in the Napoleonic Wars. He rose to the rank of general and was awarded several honors for his service.
Throughout history, the name Bertonazzi has been associated with various locations in northern Italy, including the towns of Azzano, Verona, Milan, and Padua. While the spelling has remained relatively consistent, some variations, such as Bertonnazi and Bertonazzi, have been observed in historical records.
Demographics
Ancestry and ethnicity for Bertonazzi
Among Census respondents with the surname Bertonazzi, the largest self-reported group is White at 100.0%.
The bar chart below shows how Bertonazzi 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 Bertonazzi surname at the time of the 2020 Census, not any inherent property of the name itself.
- White100.0% · 113
Timeline
Historical Census data for Bertonazzi
Bertonazzi 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
#147,221
National surname rank
Recorded bearers 113
+4 bearers (+3.7%)
Per 100,000 0.04
Rank movement Up 3,231 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2010 | #150,452 | 109 | 0.04 | First available Census row | First available Census row |
| 2020 | #147,221 | 113 | 0.04 | +4 bearers (+3.7%) | Up 3,231 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 Bertonazzi 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 | #150,452 | #147,221 | 2.1% |
| Count | 109 | 113 | 3.7% |
| Per 100K | 0.04 | 0.04 | -5.5% |
Between the 2010 and 2020 Census, the number of Bertonazzi bearers went from 109 to 113 (+3.7% change). The surname moved up 3,231 positions in the national ranking, going from #150,452 to #147,221.
FAQ
Bertonazzi surname: questions and answers
How many people in the U.S. have the surname Bertonazzi?
Name Census estimates that about 130 living Americans carry the surname Bertonazzi. Using the current population baseline, that works out to roughly 1 in 2,636,572 residents.
How common is Bertonazzi?
Bertonazzi ranks #147,221 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 113 people with the surname Bertonazzi. That is different from the site's living-bearer estimate (130), 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 Bertonazzi.
Has Bertonazzi become more or less common over time?
Between 2010 and 2020, the surname Bertonazzi went from 109 recorded bearers to 113. That is an increase of 4 (+3.7%). In the national ranking it rose from #150,452 to #147,221.
What does the Census say about the background of Bertonazzi?
Among Census respondents with the surname Bertonazzi, 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 Bertonazzi in the 2020 Census, accounting for 100.0% (113 people in the source table).
What is the full ancestry breakdown?
Bertonazzi 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 Bertonazzi (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 Bertonazzi mean?
An Italian surname derived from a diminutive form of a first name. 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 Bertonazzi (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 Americans have the surname Bertonazzi?
For a quick modern estimate, our sister site HowManyOfMe.org answers that in one glance, with the living-bearer count front and centre.