2010
#151,532
National surname rank
Recorded bearers 108
First available Census row
Per 100,000 0.04
Very Rare Last name
Dagnillo
A surname of Italian origin indicating one who lived near a small body of water.
According to the 2020 US Census Bureau surname tables, roughly 115 Americans carry the last name Dagnillo. That puts it at #155,682 in the national surname ranking, appearing at a frequency of 0.03 per 100,000 people (about 1 in 2,980,473 residents).
This page is the full Name Census profile for the Dagnillo 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
115
1 in 2,980,473
Census rank
#155,682
2020 decennial data
Per 100,000
0.0
Frequency rate
Recorded bearers
100
very rare in the US
Popularity narrative
The Census Bureau recorded 100 bearers of the surname Dagnillo in its 2020 decennial surname file. At a rate of 0.03 per 100,000 residents, it holds the 155682nd position in the national surname ranking.
Among Census respondents with the surname Dagnillo, the largest self-reported group is White at 87.0%. The next largest groups are Hispanic (9.0%) and Two or More Races (2.0%).
Origin
Meaning and origin of Dagnillo
The surname DAGNILLO is of Italian origin, originating in the northern regions of the country during the medieval period. It is believed to have derived from the Italian word "dagnino," which means "little dagger," suggesting that the name may have been an occupational surname or a nickname for someone who carried a small dagger or knife.
One of the earliest recorded instances of the name DAGNILLO can be found in the Florentine Codex, a 16th-century manuscript detailing the history and customs of the Aztec people. In this document, a Florentine friar named Bartolomeo DAGNILLO is mentioned as one of the translators and contributors to the work.
In the 14th century, a nobleman named Giovanni DAGNILLO was recorded as owning land in the Piedmont region of northern Italy. His descendants continued to use the surname and were involved in various political and military affairs throughout the Renaissance period.
During the 16th century, a renowned artist named Girolamo DAGNILLO gained recognition for his intricate woodcarvings and sculptures adorning churches and public buildings in cities like Venice and Padua. Some of his most notable works can still be admired today in the Basilica di San Marco and the Palazzo Ducale.
In the 18th century, a scholar and historian named Luca DAGNILLO authored several books on the history and culture of the Veneto region. His most celebrated work, "Storia della Repubblica di Venezia" (History of the Republic of Venice), published in 1756, is still regarded as an important reference for understanding the political and social dynamics of that era.
Another notable figure with the surname DAGNILLO was Francesca DAGNILLO, a pioneering educator and advocate for women's education in the 19th century. Born in 1824 in Milan, she founded one of the first schools for girls in the city and dedicated her life to promoting educational opportunities for women.
While the surname DAGNILLO is not as common today as it once was, it has left its mark on Italian history and culture, with various individuals bearing this name making significant contributions in various fields over the centuries.
Demographics
Ancestry and ethnicity for Dagnillo
Among Census respondents with the surname Dagnillo, the largest self-reported group is White at 87.0%. The next largest groups are Hispanic (9.0%) and Two or More Races (2.0%).
The bar chart below shows how Dagnillo 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 Dagnillo surname at the time of the 2020 Census, not any inherent property of the name itself.
- White87.0% · 87
- Hispanic or Latino9.0% · 9
- Two or more races2.0% · 2
- Black or African American1.0% · 1
- Asian and Pacific Islander1.0% · 1
Timeline
Historical Census data for Dagnillo
Dagnillo appears in 2 published Census surname files: 2010, 2020. The cards below show how the name's rank and bearer count changed across each release.
2020
#155,682
National surname rank
Recorded bearers 100
-8 bearers (-7.4%)
Per 100,000 0.03
Rank movement Down 4,150 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2010 | #151,532 | 108 | 0.04 | First available Census row | First available Census row |
| 2020 | #155,682 | 100 | 0.03 | -8 bearers (-7.4%) | Down 4,150 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 Dagnillo 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 | #151,532 | #155,682 | -2.7% |
| Count | 108 | 100 | -7.4% |
| Per 100K | 0.04 | 0.03 | -16.4% |
Between the 2010 and 2020 Census, the number of Dagnillo bearers went from 108 to 100 (-7.4% change). The surname moved down 4,150 positions in the national ranking, going from #151,532 to #155,682.
FAQ
Dagnillo surname: questions and answers
How many people in the U.S. have the surname Dagnillo?
Name Census estimates that about 115 living Americans carry the surname Dagnillo. Using the current population baseline, that works out to roughly 1 in 2,980,473 residents.
How common is Dagnillo?
Dagnillo ranks #155,682 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 100 people with the surname Dagnillo. That is different from the site's living-bearer estimate (115), 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 Dagnillo.
Has Dagnillo become more or less common over time?
Between 2010 and 2020, the surname Dagnillo went from 108 recorded bearers to 100. That is a decrease of 8 (-7.4%). In the national ranking it fell from #151,532 to #155,682.
What does the Census say about the background of Dagnillo?
Among Census respondents with the surname Dagnillo, the largest self-reported group is White at 87.0%. The next largest groups are Hispanic (9.0%) and Two or More Races (2.0%). 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 Dagnillo in the 2020 Census, accounting for 87.0% (87 people in the source table).
What is the full ancestry breakdown?
Dagnillo appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are White (87.0%), Hispanic (9.0%), Two or More Races (2.0%). 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 Dagnillo (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 Dagnillo mean?
A surname of Italian origin indicating one who lived near a small body of water. 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 Dagnillo (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 Americans have the surname Dagnillo?
For a faster, more casual read, check HowManyOfMe.org — our sister site built around that single question.