2000
#135,837
National surname rank
Recorded bearers 114
First available Census row
Per 100,000 0.04
Very Rare Last name
Diciaccio
An Italian surname derived from dialectal terms meaning "evil" or "malicious".
According to the 2020 US Census Bureau surname tables, roughly 123 Americans carry the last name Diciaccio. That puts it at #151,639 in the national surname ranking, appearing at a frequency of 0.04 per 100,000 people (about 1 in 2,786,621 residents).
This page is the full Name Census profile for the Diciaccio 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
123
1 in 2,786,621
Census rank
#151,639
2020 decennial data
Per 100,000
0.0
Frequency rate
Recorded bearers
107
very rare in the US
Popularity narrative
The Census Bureau recorded 107 bearers of the surname Diciaccio in its 2020 decennial surname file. At a rate of 0.04 per 100,000 residents, it holds the 151639th position in the national surname ranking.
Among Census respondents with the surname Diciaccio, the largest self-reported group is White at 88.8%. The next largest groups are Hispanic (8.4%) and Black (1.9%).
Origin
Meaning and origin of Diciaccio
The surname DICIACCIO originated in Italy, with its earliest known roots dating back to the 14th century. The name is believed to have derived from the Italian phrase "di Ciaccio," which translates to "of Ciaccio," suggesting a connection to a specific location or family line.
The name's origins can be traced to the region of Campania, particularly in the province of Naples. Historical records indicate that the DICIACCIO surname was prevalent among noble families and landowners in this area during the Renaissance period. One of the earliest documented instances of the name appears in a manuscript from 1387, which mentions a nobleman named Guglielmo DICIACCIO.
In the 15th century, the DICIACCIO name gained prominence in the town of Sorrento, located along the Amalfi Coast. Several historical references mention a family of merchants and artisans bearing this surname who were influential in the local economy and cultural life. One notable figure from this period was Antonio DICIACCIO, a renowned painter and sculptor who lived from 1435 to 1503.
As the DICIACCIO family expanded their influence, the surname began to appear in various regions of Italy. In the 16th century, a branch of the family settled in the city of Florence, where they contributed to the flourishing of the Renaissance arts and literature. Domenico DICIACCIO (1492-1567) was a celebrated poet and humanist scholar who earned recognition for his poetic works and translations of classical texts.
The name DICIACCIO also found its way into the annals of Italian military history. During the 17th century, a notable figure was Girolamo DICIACCIO (1609-1678), a skilled military strategist and commander who served in the armies of several Italian states, including the Papal States and the Duchy of Milan.
In the 19th century, the DICIACCIO surname gained prominence in the field of law and politics. One prominent figure was Giuseppe DICIACCIO (1826-1897), a renowned lawyer and politician who served as a member of the Italian Parliament and played a significant role in the unification of Italy.
Throughout its long history, the DICIACCIO surname has been carried by individuals from various walks of life, including artists, scholars, military leaders, and politicians. While the name's origins can be traced back to the regions of Campania and Naples, its reach has extended across Italy and beyond, leaving an indelible mark on the country's rich cultural tapestry.
Demographics
Ancestry and ethnicity for Diciaccio
Among Census respondents with the surname Diciaccio, the largest self-reported group is White at 88.8%. The next largest groups are Hispanic (8.4%) and Black (1.9%).
The bar chart below shows how Diciaccio 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 Diciaccio surname at the time of the 2020 Census, not any inherent property of the name itself.
- White88.8% · 95
- Hispanic or Latino8.4% · 9
- Black or African American1.9% · 2
- Two or more races0.9% · 1
Timeline
Historical Census data for Diciaccio
Diciaccio 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
#152,628
National surname rank
Recorded bearers 107
-7 bearers (-6.1%)
Per 100,000 0.04
Rank movement Down 16,791 places
2020
#151,639
National surname rank
Recorded bearers 107
+0 bearers (+0.0%)
Per 100,000 0.04
Rank movement Up 989 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2000 | #135,837 | 114 | 0.04 | First available Census row | First available Census row |
| 2010 | #152,628 | 107 | 0.04 | -7 bearers (-6.1%) | Down 16,791 places |
| 2020 | #151,639 | 107 | 0.04 | +0 bearers (+0.0%) | Up 989 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 Diciaccio 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 | #152,628 | #151,639 | 0.6% |
| Count | 107 | 107 | 0.0% |
| Per 100K | 0.04 | 0.04 | -10.5% |
Between the 2010 and 2020 Census, the number of Diciaccio bearers went from 107 to 107 (+0.0% change). The surname moved up 989 positions in the national ranking, going from #152,628 to #151,639.
FAQ
Diciaccio surname: questions and answers
How many people in the U.S. have the surname Diciaccio?
Name Census estimates that about 123 living Americans carry the surname Diciaccio. Using the current population baseline, that works out to roughly 1 in 2,786,621 residents.
How common is Diciaccio?
Diciaccio ranks #151,639 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 107 people with the surname Diciaccio. That is different from the site's living-bearer estimate (123), 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 Diciaccio.
Has Diciaccio become more or less common over time?
Between 2010 and 2020, the surname Diciaccio went from 107 recorded bearers to 107. That is an increase of 0 (+0.0%). In the national ranking it rose from #152,628 to #151,639.
What does the Census say about the background of Diciaccio?
Among Census respondents with the surname Diciaccio, the largest self-reported group is White at 88.8%. The next largest groups are Hispanic (8.4%) and Black (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 Diciaccio in the 2020 Census, accounting for 88.8% (95 people in the source table).
What is the full ancestry breakdown?
Diciaccio appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are White (88.8%), Hispanic (8.4%), Black (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 Diciaccio (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 Diciaccio mean?
An Italian surname derived from dialectal terms meaning "evil" or "malicious". 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 Diciaccio (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 Diciaccio?
For a quick modern estimate, our sister site HowManyOfMe.org answers that in one glance, with the living-bearer count front and centre.