2000
#133,114
National surname rank
Recorded bearers 117
First available Census row
Per 100,000 0.04
Very Rare Last name
Diprimo
An Italian surname derived from the phrase "di primo" meaning "first" or "primary".
According to the 2020 US Census Bureau surname tables, roughly 132 Americans carry the last name Diprimo. That puts it at #145,757 in the national surname ranking, appearing at a frequency of 0.04 per 100,000 people (about 1 in 2,596,624 residents).
This page is the full Name Census profile for the Diprimo 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
132
1 in 2,596,624
Census rank
#145,757
2020 decennial data
Per 100,000
0.0
Frequency rate
Recorded bearers
115
very rare in the US
Popularity narrative
The Census Bureau recorded 115 bearers of the surname Diprimo in its 2020 decennial surname file. At a rate of 0.04 per 100,000 residents, it holds the 145757th position in the national surname ranking.
Among Census respondents with the surname Diprimo, the largest self-reported group is White at 88.7%. The next largest groups are Hispanic (7.0%) and Asian/Pacific Islander (1.7%).
Origin
Meaning and origin of Diprimo
The surname DiPrimo originated in Italy, specifically in the regions of Campania and Lazio. It dates back to the 15th century and is believed to have derived from the Italian word "primo," meaning "first" or "foremost." This suggests that the name may have been initially given to the firstborn child or the eldest son in a family.
One of the earliest recorded instances of the surname DiPrimo can be found in the archives of the city of Naples, where a certain Giovanni DiPrimo was mentioned in a document dated 1487. This document was a record of land ownership and transactions, indicating that the DiPrimo family held some prominence and property during that time.
In the 16th century, the DiPrimo surname appeared in several ecclesiastical records in the town of Fondi, located in the province of Latina, Lazio. These records included baptismal and marriage certificates, suggesting that the family had established roots in this region as well.
A notable figure bearing the DiPrimo surname was Antonio DiPrimo, a renowned artist born in Naples in 1671. He was known for his exquisite sculptures and architectural works, many of which can still be admired in churches and palaces throughout Naples and the surrounding areas.
Another prominent individual was Giulio DiPrimo, a military leader who fought in the Napoleonic Wars. Born in 1785 in the town of Gaeta, he rose through the ranks and became a respected general in the Italian army, participating in several crucial battles against the French forces.
In the late 19th century, a man named Vincenzo DiPrimo made a significant contribution to the field of medicine. Born in 1856 in the town of Caserta, he was a pioneering physician who developed innovative treatments for various illnesses and published numerous scientific papers on his research.
The DiPrimo surname was also associated with the town of Pozzuoli, located in the province of Naples. Historical records from the 17th and 18th centuries mention several members of the DiPrimo family who held influential positions in the local government and church authorities of Pozzuoli.
As Italian immigrants began to settle in other parts of the world, particularly in the Americas, the DiPrimo surname spread to different countries. However, its origins can be traced back to the regions of Campania and Lazio, where it has a rich historical significance.
Demographics
Ancestry and ethnicity for Diprimo
Among Census respondents with the surname Diprimo, the largest self-reported group is White at 88.7%. The next largest groups are Hispanic (7.0%) and Asian/Pacific Islander (1.7%).
The bar chart below shows how Diprimo 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 Diprimo surname at the time of the 2020 Census, not any inherent property of the name itself.
- White88.7% · 102
- Hispanic or Latino7.0% · 8
- Asian and Pacific Islander1.7% · 2
- Two or more races1.7% · 2
- American Indian and Alaska Native0.9% · 1
Timeline
Historical Census data for Diprimo
Diprimo 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
#140,157
National surname rank
Recorded bearers 119
+2 bearers (+1.7%)
Per 100,000 0.04
Rank movement Down 7,043 places
2020
#145,757
National surname rank
Recorded bearers 115
-4 bearers (-3.4%)
Per 100,000 0.04
Rank movement Down 5,600 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2000 | #133,114 | 117 | 0.04 | First available Census row | First available Census row |
| 2010 | #140,157 | 119 | 0.04 | +2 bearers (+1.7%) | Down 7,043 places |
| 2020 | #145,757 | 115 | 0.04 | -4 bearers (-3.4%) | Down 5,600 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 Diprimo 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 | #140,157 | #145,757 | -4.0% |
| Count | 119 | 115 | -3.4% |
| Per 100K | 0.04 | 0.04 | -3.8% |
Between the 2010 and 2020 Census, the number of Diprimo bearers went from 119 to 115 (-3.4% change). The surname moved down 5,600 positions in the national ranking, going from #140,157 to #145,757.
FAQ
Diprimo surname: questions and answers
How many people in the U.S. have the surname Diprimo?
Name Census estimates that about 132 living Americans carry the surname Diprimo. Using the current population baseline, that works out to roughly 1 in 2,596,624 residents.
How common is Diprimo?
Diprimo ranks #145,757 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 115 people with the surname Diprimo. That is different from the site's living-bearer estimate (132), 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 Diprimo.
Has Diprimo become more or less common over time?
Between 2010 and 2020, the surname Diprimo went from 119 recorded bearers to 115. That is a decrease of 4 (-3.4%). In the national ranking it fell from #140,157 to #145,757.
What does the Census say about the background of Diprimo?
Among Census respondents with the surname Diprimo, the largest self-reported group is White at 88.7%. The next largest groups are Hispanic (7.0%) and Asian/Pacific Islander (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 Diprimo in the 2020 Census, accounting for 88.7% (102 people in the source table).
What is the full ancestry breakdown?
Diprimo appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are White (88.7%), Hispanic (7.0%), Asian/Pacific Islander (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 Diprimo (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 Diprimo mean?
An Italian surname derived from the phrase "di primo" meaning "first" or "primary". 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 Diprimo (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 Diprimo?
HowManyOfMe.org, our sister site, answers that with the living-bearer count in one glance.