2000
#88,825
National surname rank
Recorded bearers 194
First available Census row
Per 100,000 0.07
Very Rare Last name
Iacopelli
Italian surname derived from the personal name "Iacopo", meaning "supplanter".
According to the 2020 US Census Bureau surname tables, roughly 268 Americans carry the last name Iacopelli. That puts it at #85,854 in the national surname ranking, appearing at a frequency of 0.08 per 100,000 people (about 1 in 1,278,934 residents).
This page is the full Name Census profile for the Iacopelli 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
268
1 in 1,278,934
Census rank
#85,854
2020 decennial data
Per 100,000
0.1
Frequency rate
Recorded bearers
234
very rare in the US
Popularity narrative
The Census Bureau recorded 234 bearers of the surname Iacopelli in its 2020 decennial surname file. At a rate of 0.08 per 100,000 residents, it holds the 85854th position in the national surname ranking.
Among Census respondents with the surname Iacopelli, the largest self-reported group is White at 89.7%. The next largest groups are Hispanic (6.4%) and Two or More Races (2.1%).
Origin
Meaning and origin of Iacopelli
The surname Iacopelli originates from Italy, specifically from the regions of Tuscany and Lazio. It is believed to have derived from the Italian personal name Iacopo, which is the equivalent of the English name Jacob. The suffix "-elli" is a diminutive form, suggesting it was likely a nickname for someone small or young named Iacopo.
One of the earliest recorded instances of the name Iacopelli can be found in the Florentine Priorista, a historical record of the names of city officials in Florence, dating back to the 14th century. The name appears in an entry from 1372, referring to one Iacopo di Benedetto Iacopelli.
In the 15th century, the name Iacopelli was present in the town of Siena, where a family with this surname owned property and held positions of influence. A notable member of this family was Giacomo Iacopelli, born in 1438, who served as a magistrate in Siena during the late 1400s.
The surname Iacopelli can also be traced back to the village of Farnese in the province of Viterbo, Lazio. Here, the name was linked to the ancient castle of Farnese, with records indicating that a branch of the Iacopelli family resided within the castle walls in the 16th century.
One of the most prominent figures to bear the name Iacopelli was Giovanni Battista Iacopelli, an Italian painter and architect born in Rome in 1589. He is best known for his work on the Basilica of St. Peter's in the Vatican, where he contributed to the decorations and frescoes.
Another notable Iacopelli was Vincenzo Iacopelli, a 17th-century Baroque painter born in Naples in 1620. His works can be found in various churches and galleries throughout Italy, with his most famous painting being the "Adoration of the Magi" currently housed in the Museo Nazionale di Capodimonte in Naples.
In the 18th century, the Iacopelli name gained recognition in the field of literature through the works of Girolamo Iacopelli, a poet and playwright born in Ascoli Piceno in 1730. His most celebrated work was the tragic play "Artemisia," which was widely acclaimed during his lifetime.
Demographics
Ancestry and ethnicity for Iacopelli
Among Census respondents with the surname Iacopelli, the largest self-reported group is White at 89.7%. The next largest groups are Hispanic (6.4%) and Two or More Races (2.1%).
The bar chart below shows how Iacopelli 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 Iacopelli surname at the time of the 2020 Census, not any inherent property of the name itself.
- White89.7% · 210
- Hispanic or Latino6.4% · 15
- Two or more races2.1% · 5
- American Indian and Alaska Native0.9% · 2
- Black or African American0.4% · 1
- Asian and Pacific Islander0.4% · 1
Timeline
Historical Census data for Iacopelli
Iacopelli 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
#97,210
National surname rank
Recorded bearers 187
-7 bearers (-3.6%)
Per 100,000 0.06
Rank movement Down 8,385 places
2020
#85,854
National surname rank
Recorded bearers 234
+47 bearers (+25.1%)
Per 100,000 0.08
Rank movement Up 11,356 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2000 | #88,825 | 194 | 0.07 | First available Census row | First available Census row |
| 2010 | #97,210 | 187 | 0.06 | -7 bearers (-3.6%) | Down 8,385 places |
| 2020 | #85,854 | 234 | 0.08 | +47 bearers (+25.1%) | Up 11,356 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 Iacopelli 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 | #97,210 | #85,854 | 11.7% |
| Count | 187 | 234 | 25.1% |
| Per 100K | 0.06 | 0.08 | 30.5% |
Between the 2010 and 2020 Census, the number of Iacopelli bearers went from 187 to 234 (+25.1% change). The surname moved up 11,356 positions in the national ranking, going from #97,210 to #85,854.
FAQ
Iacopelli surname: questions and answers
How many people in the U.S. have the surname Iacopelli?
Name Census estimates that about 268 living Americans carry the surname Iacopelli. Using the current population baseline, that works out to roughly 1 in 1,278,934 residents.
How common is Iacopelli?
Iacopelli ranks #85,854 in the 2020 Census surname tables and is classified on this site as "Very Rare." The Census recorded the name at a frequency of 0.08 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 234 people with the surname Iacopelli. That is different from the site's living-bearer estimate (268), which projects the surname's present-day count by applying the Census frequency rate to the current U.S. population.
What does 0.08 per 100,000 actually mean?
It is the Census Bureau's normalized frequency measure. A rate of 0.08 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 Iacopelli.
Has Iacopelli become more or less common over time?
Between 2010 and 2020, the surname Iacopelli went from 187 recorded bearers to 234. That is an increase of 47 (+25.1%). In the national ranking it rose from #97,210 to #85,854.
What does the Census say about the background of Iacopelli?
Among Census respondents with the surname Iacopelli, the largest self-reported group is White at 89.7%. The next largest groups are Hispanic (6.4%) and Two or More Races (2.1%). 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 Iacopelli in the 2020 Census, accounting for 89.7% (210 people in the source table).
What is the full ancestry breakdown?
Iacopelli appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are White (89.7%), Hispanic (6.4%), Two or More Races (2.1%). 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 Iacopelli (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 Iacopelli mean?
Italian surname derived from the personal name "Iacopo", meaning "supplanter". 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 Iacopelli (0.08 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 have the surname Iacopelli?
For a faster, more casual read, check HowManyOfMe.org — our sister site built around that single question.