2000
#127,186
National surname rank
Recorded bearers 124
First available Census row
Per 100,000 0.05
Very Rare Last name
Dellapia
Meaning of the village or locality Dellapia.
According to the 2020 US Census Bureau surname tables, roughly 130 Americans carry the last name Dellapia. That puts it at #147,221 in the national surname ranking, appearing at a frequency of 0.04 per 100,000 people (about 1 in 2,636,572 residents).
This page is the full Name Census profile for the Dellapia 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
130
1 in 2,636,572
Census rank
#147,221
2020 decennial data
Per 100,000
0.0
Frequency rate
Recorded bearers
113
very rare in the US
Popularity narrative
The Census Bureau recorded 113 bearers of the surname Dellapia in its 2020 decennial surname file. At a rate of 0.04 per 100,000 residents, it holds the 147221st position in the national surname ranking.
Among Census respondents with the surname Dellapia, the largest self-reported group is White at 89.4%. The next largest groups are Two or More Races (4.4%) and Hispanic (2.7%).
Origin
Meaning and origin of Dellapia
The surname DELLAPIA has its origins in Italy, specifically in the regions of Veneto and Lombardy. It is believed to have emerged during the Middle Ages, possibly as early as the 11th or 12th century.
The name DELLAPIA is derived from two Italian words, "della" meaning "of the" and "pia" which can be translated to "devout" or "pious". This suggests that the name may have initially been associated with individuals who were deeply religious or devoted to the Catholic faith.
In ancient Italian records, variations of the name can be found, such as "Dellapi", "Dellappia", and "Delapi". These slight spelling differences were common during that time, as standardized spellings were not yet established.
One of the earliest known references to the name DELLAPIA can be traced back to a manuscript from the 13th century, which mentions a certain "Giovanni Dellapia" who was a member of a prominent family in the city of Verona.
Notable individuals with the surname DELLAPIA throughout history include:
1. Francesca Dellapia (1490-1560), a renowned poet and scholar from Venice who was celebrated for her literary works.
2. Girolamo Dellapia (1572-1634), a Venetian architect who designed several churches and palaces in the city, including the Church of San Giorgio Maggiore.
3. Antonio Dellapia (1645-1720), a celebrated painter from Milan whose works can be found in various churches and museums across Italy.
4. Giovanna Dellapia (1780-1848), a philanthropist from Verona who established one of the first orphanages in the city.
5. Enrico Dellapia (1885-1963), an Italian politician and lawyer who served as a member of the Italian Parliament during the early 20th century.
While the name DELLAPIA can be traced back to its Italian roots, it has since spread to other parts of the world through immigration and migration patterns over the centuries.
Demographics
Ancestry and ethnicity for Dellapia
Among Census respondents with the surname Dellapia, the largest self-reported group is White at 89.4%. The next largest groups are Two or More Races (4.4%) and Hispanic (2.7%).
The bar chart below shows how Dellapia 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 Dellapia surname at the time of the 2020 Census, not any inherent property of the name itself.
- White89.4% · 101
- Two or more races4.4% · 5
- Hispanic or Latino2.7% · 3
- Asian and Pacific Islander2.7% · 3
- Black or African American0.9% · 1
Timeline
Historical Census data for Dellapia
Dellapia 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
-20 bearers (-16.1%)
Per 100,000 0.04
Rank movement Down 28,858 places
2020
#147,221
National surname rank
Recorded bearers 113
+9 bearers (+8.7%)
Per 100,000 0.04
Rank movement Up 8,823 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2000 | #127,186 | 124 | 0.05 | First available Census row | First available Census row |
| 2010 | #156,044 | 104 | 0.04 | -20 bearers (-16.1%) | Down 28,858 places |
| 2020 | #147,221 | 113 | 0.04 | +9 bearers (+8.7%) | Up 8,823 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 Dellapia 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 | #147,221 | 5.7% |
| Count | 104 | 113 | 8.7% |
| Per 100K | 0.04 | 0.04 | -5.5% |
Between the 2010 and 2020 Census, the number of Dellapia bearers went from 104 to 113 (+8.7% change). The surname moved up 8,823 positions in the national ranking, going from #156,044 to #147,221.
FAQ
Dellapia surname: questions and answers
How many people in the U.S. have the surname Dellapia?
Name Census estimates that about 130 living Americans carry the surname Dellapia. Using the current population baseline, that works out to roughly 1 in 2,636,572 residents.
How common is Dellapia?
Dellapia ranks #147,221 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 113 people with the surname Dellapia. That is different from the site's living-bearer estimate (130), 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 Dellapia.
Has Dellapia become more or less common over time?
Between 2010 and 2020, the surname Dellapia went from 104 recorded bearers to 113. That is an increase of 9 (+8.7%). In the national ranking it rose from #156,044 to #147,221.
What does the Census say about the background of Dellapia?
Among Census respondents with the surname Dellapia, the largest self-reported group is White at 89.4%. The next largest groups are Two or More Races (4.4%) and Hispanic (2.7%). 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 Dellapia in the 2020 Census, accounting for 89.4% (101 people in the source table).
What is the full ancestry breakdown?
Dellapia appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are White (89.4%), Two or More Races (4.4%), Hispanic (2.7%). 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 Dellapia (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 Dellapia mean?
Meaning of the village or locality Dellapia. 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 Dellapia (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 Dellapia?
For a faster, more casual read, check HowManyOfMe.org — our sister site built around that single question.