2000
#115,489
National surname rank
Recorded bearers 140
First available Census row
Per 100,000 0.05
Very Rare Last name
Diponzio
An Italian surname derived from the Latin "de" and "Pontius," meaning from the city or town of Ponzo.
According to the 2020 US Census Bureau surname tables, roughly 134 Americans carry the last name Diponzio. That puts it at #144,270 in the national surname ranking, appearing at a frequency of 0.04 per 100,000 people (about 1 in 2,557,868 residents).
This page is the full Name Census profile for the Diponzio 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
134
1 in 2,557,868
Census rank
#144,270
2020 decennial data
Per 100,000
0.0
Frequency rate
Recorded bearers
117
very rare in the US
Popularity narrative
The Census Bureau recorded 117 bearers of the surname Diponzio in its 2020 decennial surname file. At a rate of 0.04 per 100,000 residents, it holds the 144270th position in the national surname ranking.
Among Census respondents with the surname Diponzio, the largest self-reported group is White at 98.3%. The next largest groups are Hispanic (1.7%).
Origin
Meaning and origin of Diponzio
The surname DIPONZIO has its origins in Italy, specifically in the southern regions of the country. It can be traced back to the late Middle Ages, around the 13th or 14th century. The name is believed to derive from the Italian phrase "di Ponzio," meaning "of Ponzio" or "son of Ponzio," with Ponzio being a personal name derived from the Latin name Pontius.
One of the earliest recorded instances of the surname DIPONZIO can be found in historical records from the region of Campania, particularly in the city of Naples and its surrounding areas. It is possible that the name was initially associated with a notable individual named Ponzio who lived in this region during the medieval period.
In the 15th century, the DIPONZIO name appeared in various legal documents and municipal records from the town of Sorrento, located in the province of Naples. These records suggest that the family may have had connections to this coastal town, which was known for its maritime activities and trade with other Mediterranean regions.
During the Renaissance period, the DIPONZIO surname gained prominence in the city of Naples itself. One notable individual was Giacomo DIPONZIO, a scholar and philosopher who lived in the late 16th century. He is known for his work on Aristotelian philosophy and his contributions to the intellectual circles of Naples during that time.
In the 17th century, the DIPONZIO family established itself in the town of Pozzuoli, located in the Campania region near Naples. Records from this period include mentions of Giuseppe DIPONZIO, a merchant and landowner who played a significant role in the local economy and civic affairs of Pozzuoli.
Another notable figure was Antonio DIPONZIO, a military officer who served in the Bourbon armies of the Kingdom of Naples during the 18th century. He participated in various campaigns and conflicts, earning recognition for his bravery and strategic abilities on the battlefield.
By the 19th century, members of the DIPONZIO family had spread to other parts of Italy, including the region of Lazio and the city of Rome. One individual of note was Raffaele DIPONZIO, a renowned artist and painter who lived in Rome during the latter half of the 19th century. His works were exhibited in prestigious galleries and gained widespread acclaim for their portrayal of Italian landscapes and historical scenes.
Throughout its history, the DIPONZIO surname has been associated with individuals from various walks of life, including scholars, merchants, military figures, and artists. While its origins can be traced back to the southern regions of Italy, particularly Naples and the surrounding areas, the name has since spread to other parts of the country and beyond, reflecting the migration patterns and historical movements of Italian families.
Demographics
Ancestry and ethnicity for Diponzio
Among Census respondents with the surname Diponzio, the largest self-reported group is White at 98.3%. The next largest groups are Hispanic (1.7%).
The bar chart below shows how Diponzio 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 Diponzio surname at the time of the 2020 Census, not any inherent property of the name itself.
- White98.3% · 115
- Hispanic or Latino1.7% · 2
Timeline
Historical Census data for Diponzio
Diponzio 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
#136,449
National surname rank
Recorded bearers 123
-17 bearers (-12.1%)
Per 100,000 0.04
Rank movement Down 20,960 places
2020
#144,270
National surname rank
Recorded bearers 117
-6 bearers (-4.9%)
Per 100,000 0.04
Rank movement Down 7,821 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2000 | #115,489 | 140 | 0.05 | First available Census row | First available Census row |
| 2010 | #136,449 | 123 | 0.04 | -17 bearers (-12.1%) | Down 20,960 places |
| 2020 | #144,270 | 117 | 0.04 | -6 bearers (-4.9%) | Down 7,821 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 Diponzio 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 | #136,449 | #144,270 | -5.7% |
| Count | 123 | 117 | -4.9% |
| Per 100K | 0.04 | 0.04 | -2.1% |
Between the 2010 and 2020 Census, the number of Diponzio bearers went from 123 to 117 (-4.9% change). The surname moved down 7,821 positions in the national ranking, going from #136,449 to #144,270.
FAQ
Diponzio surname: questions and answers
How many people in the U.S. have the surname Diponzio?
Name Census estimates that about 134 living Americans carry the surname Diponzio. Using the current population baseline, that works out to roughly 1 in 2,557,868 residents.
How common is Diponzio?
Diponzio ranks #144,270 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 117 people with the surname Diponzio. That is different from the site's living-bearer estimate (134), 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 Diponzio.
Has Diponzio become more or less common over time?
Between 2010 and 2020, the surname Diponzio went from 123 recorded bearers to 117. That is a decrease of 6 (-4.9%). In the national ranking it fell from #136,449 to #144,270.
What does the Census say about the background of Diponzio?
Among Census respondents with the surname Diponzio, the largest self-reported group is White at 98.3%. The next largest groups are Hispanic (1.7%). 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 Diponzio in the 2020 Census, accounting for 98.3% (115 people in the source table).
What is the full ancestry breakdown?
Diponzio appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are White (98.3%), Hispanic (1.7%). 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 Diponzio (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 Diponzio mean?
An Italian surname derived from the Latin "de" and "Pontius," meaning from the city or town of Ponzo. 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 Diponzio (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 surname Diponzio?
HowManyOfMe.org, our sister site, answers that with the living-bearer count in one glance.