2000
#150,436
National surname rank
Recorded bearers 100
First available Census row
Per 100,000 0.04
Very Rare Last name
Delgiacco
An Italian surname derived from a place name referring to someone from Delgiacco.
According to the 2020 US Census Bureau surname tables, roughly 112 Americans carry the last name Delgiacco. That puts it at #156,269 in the national surname ranking, appearing at a frequency of 0.03 per 100,000 people (about 1 in 3,060,307 residents).
This page is the full Name Census profile for the Delgiacco 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
112
1 in 3,060,307
Census rank
#156,269
2020 decennial data
Per 100,000
0.0
Frequency rate
Recorded bearers
98
very rare in the US
Popularity narrative
The Census Bureau recorded 98 bearers of the surname Delgiacco in its 2020 decennial surname file. At a rate of 0.03 per 100,000 residents, it holds the 156269th position in the national surname ranking.
Among Census respondents with the surname Delgiacco, the largest self-reported group is White at 96.9%. The next largest groups are American Indian/Alaska Native (2.0%) and Asian/Pacific Islander (1.0%).
Origin
Meaning and origin of Delgiacco
The surname DELGIACCO originated in Italy, tracing its roots back to the 14th century. It is believed to have originated in the northern regions of the country, particularly in the areas around Venice and the Veneto region.
The name DELGIACCO is thought to be derived from the Italian phrase "del giacco," which translates to "of the jacket" or "of the coat." This suggests that the name may have been initially bestowed upon an individual who was closely associated with the trade or production of jackets or coats, possibly a tailor or a merchant dealing in such garments.
In historical records, the earliest known reference to the name DELGIACCO can be found in a document from the year 1387, which mentions a certain Giovanni DELGIACCO, a merchant from the city of Venice. This document provides valuable insight into the early use and spelling of the surname.
During the Renaissance period, the DELGIACCO family gained notable prominence in the city of Venice. One notable figure was Andrea DELGIACCO, a renowned artist and fresco painter who lived between 1450 and 1522. His works can still be admired in various churches and palaces throughout the Venetian region.
Another significant individual bearing the surname DELGIACCO was Giacomo DELGIACCO, a prominent banker and financier who lived from 1520 to 1589. He played a crucial role in facilitating trade between Venice and other European cities, and his name is documented in numerous financial records and ledgers from that era.
In the 17th century, the DELGIACCO family expanded its influence beyond Venice, with members settling in other parts of Italy and even in neighboring countries. One such figure was Pietro DELGIACCO, a military commander who served in the army of the Duchy of Milan between 1635 and 1701. His exploits were chronicled in several historical accounts of the time.
Another notable figure was Maria DELGIACCO, a celebrated opera singer who graced the stages of major theaters across Europe in the late 18th century. Born in 1760 in Venice, her exceptional vocal talents earned her widespread acclaim and recognition among the nobility and aristocracy of the time.
As the centuries passed, the DELGIACCO surname continued to be carried by individuals from various walks of life, including scholars, artists, and professionals, contributing to the rich tapestry of Italian history and culture.
Demographics
Ancestry and ethnicity for Delgiacco
Among Census respondents with the surname Delgiacco, the largest self-reported group is White at 96.9%. The next largest groups are American Indian/Alaska Native (2.0%) and Asian/Pacific Islander (1.0%).
The bar chart below shows how Delgiacco 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 Delgiacco surname at the time of the 2020 Census, not any inherent property of the name itself.
- White96.9% · 95
- American Indian and Alaska Native2.0% · 2
- Asian and Pacific Islander1.0% · 1
Timeline
Historical Census data for Delgiacco
Delgiacco 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
#156,044
National surname rank
Recorded bearers 104
+4 bearers (+4.0%)
Per 100,000 0.04
Rank movement Down 5,608 places
2020
#156,269
National surname rank
Recorded bearers 98
-6 bearers (-5.8%)
Per 100,000 0.03
Rank movement Down 225 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2000 | #150,436 | 100 | 0.04 | First available Census row | First available Census row |
| 2010 | #156,044 | 104 | 0.04 | +4 bearers (+4.0%) | Down 5,608 places |
| 2020 | #156,269 | 98 | 0.03 | -6 bearers (-5.8%) | Down 225 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 Delgiacco 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 | #156,044 | #156,269 | -0.1% |
| Count | 104 | 98 | -5.8% |
| Per 100K | 0.04 | 0.03 | -18.0% |
Between the 2010 and 2020 Census, the number of Delgiacco bearers went from 104 to 98 (-5.8% change). The surname moved down 225 positions in the national ranking, going from #156,044 to #156,269.
FAQ
Delgiacco surname: questions and answers
How many people in the U.S. have the surname Delgiacco?
Name Census estimates that about 112 living Americans carry the surname Delgiacco. Using the current population baseline, that works out to roughly 1 in 3,060,307 residents.
How common is Delgiacco?
Delgiacco ranks #156,269 in the 2020 Census surname tables and is classified on this site as "Very Rare." The Census recorded the name at a frequency of 0.03 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 98 people with the surname Delgiacco. That is different from the site's living-bearer estimate (112), which projects the surname's present-day count by applying the Census frequency rate to the current U.S. population.
What does 0.03 per 100,000 actually mean?
It is the Census Bureau's normalized frequency measure. A rate of 0.03 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 Delgiacco.
Has Delgiacco become more or less common over time?
Between 2010 and 2020, the surname Delgiacco went from 104 recorded bearers to 98. That is a decrease of 6 (-5.8%). In the national ranking it fell from #156,044 to #156,269.
What does the Census say about the background of Delgiacco?
Among Census respondents with the surname Delgiacco, the largest self-reported group is White at 96.9%. The next largest groups are American Indian/Alaska Native (2.0%) and Asian/Pacific Islander (1.0%). 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 Delgiacco in the 2020 Census, accounting for 96.9% (95 people in the source table).
What is the full ancestry breakdown?
Delgiacco appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are White (96.9%), American Indian/Alaska Native (2.0%), Asian/Pacific Islander (1.0%). 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 Delgiacco (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 Delgiacco mean?
An Italian surname derived from a place name referring to someone from Delgiacco. 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 Delgiacco (0.03 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 are called Delgiacco?
Our sister site HowManyOfMe.org answers how common the surname Delgiacco is at a glance, with the living-bearer count up front.