2000
#118,954
National surname rank
Recorded bearers 135
First available Census row
Per 100,000 0.05
Very Rare Last name
Daddezio
Italian surname derived from the male given name "Dadduzio" or "Dadduzza", diminutive forms of "Dado".
According to the 2020 US Census Bureau surname tables, roughly 131 Americans carry the last name Daddezio. That puts it at #146,495 in the national surname ranking, appearing at a frequency of 0.04 per 100,000 people (about 1 in 2,616,445 residents).
This page is the full Name Census profile for the Daddezio 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
131
1 in 2,616,445
Census rank
#146,495
2020 decennial data
Per 100,000
0.0
Frequency rate
Recorded bearers
114
very rare in the US
Popularity narrative
The Census Bureau recorded 114 bearers of the surname Daddezio in its 2020 decennial surname file. At a rate of 0.04 per 100,000 residents, it holds the 146495th position in the national surname ranking.
Among Census respondents with the surname Daddezio, the largest self-reported group is White at 91.2%. The next largest groups are Hispanic (3.5%) and Asian/Pacific Islander (2.6%).
Origin
Meaning and origin of Daddezio
The surname Daddezio originated in Italy, specifically in the southern regions of the country. It is believed to have its roots in the Italian word "dada," which means "toy" or "plaything." The name may have been derived from a nickname given to a light-hearted or playful individual, or someone who worked in the toy-making trade.
The earliest known record of the Daddezio surname dates back to the 16th century in the town of Salerno, located in the Campania region of Italy. In a document from 1587, a man named Giovanni Daddezio was listed as a resident of the town, working as a carpenter.
In the 17th century, the name Daddezio appeared in several historical records from the nearby town of Avellino. One notable mention was in a church register from 1643, which recorded the baptism of a child named Maria Daddezio.
As the centuries passed, the Daddezio family spread across various regions of southern Italy, including Calabria, Basilicata, and Puglia. One noteworthy individual was Francesco Daddezio, born in 1725 in the town of Matera, Basilicata. He was a renowned sculptor who created several works for local churches and noble families.
In the late 19th century, many Italians, including those with the surname Daddezio, began immigrating to the United States in search of better opportunities. One of the earliest recorded arrivals was Antonio Daddezio, who was born in 1861 in the town of Potenza, Basilicata. He settled in New York City and worked as a shoemaker.
Another notable figure was Giuseppe Daddezio, born in 1892 in the town of Bari, Puglia. He was a celebrated artist and painter who gained recognition for his vibrant landscapes and portraiture. His works were exhibited in several galleries throughout Italy and the United States.
During the 20th century, the Daddezio surname continued to spread across various parts of the world, with families establishing roots in countries like Argentina, Canada, and Australia. One prominent individual was Mario Daddezio, born in 1920 in Buenos Aires, Argentina, to Italian immigrant parents. He was a successful businessman and philanthropist who contributed significantly to local charities and educational institutions.
Demographics
Ancestry and ethnicity for Daddezio
Among Census respondents with the surname Daddezio, the largest self-reported group is White at 91.2%. The next largest groups are Hispanic (3.5%) and Asian/Pacific Islander (2.6%).
The bar chart below shows how Daddezio 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 Daddezio surname at the time of the 2020 Census, not any inherent property of the name itself.
- White91.2% · 104
- Hispanic or Latino3.5% · 4
- Asian and Pacific Islander2.6% · 3
- Two or more races2.6% · 3
Timeline
Historical Census data for Daddezio
Daddezio 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
#138,304
National surname rank
Recorded bearers 121
-14 bearers (-10.4%)
Per 100,000 0.04
Rank movement Down 19,350 places
2020
#146,495
National surname rank
Recorded bearers 114
-7 bearers (-5.8%)
Per 100,000 0.04
Rank movement Down 8,191 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2000 | #118,954 | 135 | 0.05 | First available Census row | First available Census row |
| 2010 | #138,304 | 121 | 0.04 | -14 bearers (-10.4%) | Down 19,350 places |
| 2020 | #146,495 | 114 | 0.04 | -7 bearers (-5.8%) | Down 8,191 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 Daddezio 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 | #138,304 | #146,495 | -5.9% |
| Count | 121 | 114 | -5.8% |
| Per 100K | 0.04 | 0.04 | -4.6% |
Between the 2010 and 2020 Census, the number of Daddezio bearers went from 121 to 114 (-5.8% change). The surname moved down 8,191 positions in the national ranking, going from #138,304 to #146,495.
FAQ
Daddezio surname: questions and answers
How many people in the U.S. have the surname Daddezio?
Name Census estimates that about 131 living Americans carry the surname Daddezio. Using the current population baseline, that works out to roughly 1 in 2,616,445 residents.
How common is Daddezio?
Daddezio ranks #146,495 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 114 people with the surname Daddezio. That is different from the site's living-bearer estimate (131), 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 Daddezio.
Has Daddezio become more or less common over time?
Between 2010 and 2020, the surname Daddezio went from 121 recorded bearers to 114. That is a decrease of 7 (-5.8%). In the national ranking it fell from #138,304 to #146,495.
What does the Census say about the background of Daddezio?
Among Census respondents with the surname Daddezio, the largest self-reported group is White at 91.2%. The next largest groups are Hispanic (3.5%) and Asian/Pacific Islander (2.6%). 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 Daddezio in the 2020 Census, accounting for 91.2% (104 people in the source table).
What is the full ancestry breakdown?
Daddezio appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are White (91.2%), Hispanic (3.5%), Asian/Pacific Islander (2.6%). 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 Daddezio (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 Daddezio mean?
Italian surname derived from the male given name "Dadduzio" or "Dadduzza", diminutive forms of "Dado". 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 Daddezio (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 Daddezio?
For a faster, more casual read, check HowManyOfMe.org — our sister site built around that single question.