2010
#135,593
National surname rank
Recorded bearers 124
First available Census row
Per 100,000 0.04
Very Rare Last name
Deperno
Italian surname possibly referring to a pear tree or pear orchard.
According to the 2020 US Census Bureau surname tables, roughly 124 Americans carry the last name Deperno. That puts it at #150,935 in the national surname ranking, appearing at a frequency of 0.04 per 100,000 people (about 1 in 2,764,148 residents).
This page is the full Name Census profile for the Deperno 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
124
1 in 2,764,148
Census rank
#150,935
2020 decennial data
Per 100,000
0.0
Frequency rate
Recorded bearers
108
very rare in the US
Popularity narrative
The Census Bureau recorded 108 bearers of the surname Deperno in its 2020 decennial surname file. At a rate of 0.04 per 100,000 residents, it holds the 150935th position in the national surname ranking.
Among Census respondents with the surname Deperno, the largest self-reported group is White at 94.4%. The next largest groups are Two or More Races (2.8%) and Asian/Pacific Islander (1.9%).
Origin
Meaning and origin of Deperno
The surname DEPERNO has its origins in Italy, specifically in the region of Emilia-Romagna. It is believed to have emerged during the medieval period, around the 12th or 13th century. The name is derived from the Italian word "perno," which means "hinge" or "pivot." It is possible that the name was originally used as a descriptive term for someone who worked as a hinge-maker or had a connection to this trade.
One of the earliest recorded instances of the name DEPERNO can be found in a collection of municipal records from the city of Bologna, dated to the late 13th century. These records mention a certain Guido DEPERNO, who was a skilled artisan and likely involved in the production of hinges or related metalwork.
In the 15th century, there are references to a family by the name of DEPERNO residing in the town of Modena. This family owned a small estate and was involved in agricultural activities, suggesting that the name had spread beyond its initial association with the metalworking trade.
During the Renaissance period, the DEPERNO name gained some prominence in the city of Ferrara. One notable figure was Antonio DEPERNO (1490-1562), a respected scholar and humanist who authored several works on philosophy and classical literature.
In the 17th century, a branch of the DEPERNO family migrated to the Venetian Republic, where they established themselves as successful merchants. One prominent member was Marco DEPERNO (1624-1690), a wealthy trader who played a significant role in the city's economic affairs.
Another individual of note was Giovanna DEPERNO (1715-1788), a celebrated artist from Parma who was renowned for her intricate still-life paintings and portraits. Her works can be found in several prestigious galleries and museums across Italy.
While the DEPERNO surname has its roots in Italy, it has since spread to other parts of the world due to immigration. However, the historical records suggest that its origins can be traced back to the northern Italian regions and its early association with metalworking and artisanal trades.
Demographics
Ancestry and ethnicity for Deperno
Among Census respondents with the surname Deperno, the largest self-reported group is White at 94.4%. The next largest groups are Two or More Races (2.8%) and Asian/Pacific Islander (1.9%).
The bar chart below shows how Deperno 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 Deperno surname at the time of the 2020 Census, not any inherent property of the name itself.
- White94.4% · 102
- Two or more races2.8% · 3
- Asian and Pacific Islander1.9% · 2
- Black or African American0.9% · 1
Timeline
Historical Census data for Deperno
Deperno 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
#150,935
National surname rank
Recorded bearers 108
-16 bearers (-12.9%)
Per 100,000 0.04
Rank movement Down 15,342 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2010 | #135,593 | 124 | 0.04 | First available Census row | First available Census row |
| 2020 | #150,935 | 108 | 0.04 | -16 bearers (-12.9%) | Down 15,342 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 Deperno 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 | #135,593 | #150,935 | -11.3% |
| Count | 124 | 108 | -12.9% |
| Per 100K | 0.04 | 0.04 | -9.7% |
Between the 2010 and 2020 Census, the number of Deperno bearers went from 124 to 108 (-12.9% change). The surname moved down 15,342 positions in the national ranking, going from #135,593 to #150,935.
FAQ
Deperno surname: questions and answers
How many people in the U.S. have the surname Deperno?
Name Census estimates that about 124 living Americans carry the surname Deperno. Using the current population baseline, that works out to roughly 1 in 2,764,148 residents.
How common is Deperno?
Deperno ranks #150,935 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 108 people with the surname Deperno. That is different from the site's living-bearer estimate (124), 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 Deperno.
Has Deperno become more or less common over time?
Between 2010 and 2020, the surname Deperno went from 124 recorded bearers to 108. That is a decrease of 16 (-12.9%). In the national ranking it fell from #135,593 to #150,935.
What does the Census say about the background of Deperno?
Among Census respondents with the surname Deperno, the largest self-reported group is White at 94.4%. The next largest groups are Two or More Races (2.8%) and Asian/Pacific Islander (1.9%). 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 Deperno in the 2020 Census, accounting for 94.4% (102 people in the source table).
What is the full ancestry breakdown?
Deperno appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are White (94.4%), Two or More Races (2.8%), Asian/Pacific Islander (1.9%). 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 Deperno (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 Deperno mean?
Italian surname possibly referring to a pear tree or pear orchard. 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 Deperno (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 common is the surname Deperno?
Find out how many people have the surname Deperno on our sister site HowManyOfMe.org — a quick modern estimate with the living-bearer count front and centre.