2010
#142,108
National surname rank
Recorded bearers 117
First available Census row
Per 100,000 0.04
Very Rare Last name
Iaciofano
Italian occupational surname meaning "a maker of sieves or strainers."
According to the 2020 US Census Bureau surname tables, roughly 133 Americans carry the last name Iaciofano. That puts it at #145,028 in the national surname ranking, appearing at a frequency of 0.04 per 100,000 people (about 1 in 2,577,100 residents).
This page is the full Name Census profile for the Iaciofano 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
133
1 in 2,577,100
Census rank
#145,028
2020 decennial data
Per 100,000
0.0
Frequency rate
Recorded bearers
116
very rare in the US
Popularity narrative
The Census Bureau recorded 116 bearers of the surname Iaciofano in its 2020 decennial surname file. At a rate of 0.04 per 100,000 residents, it holds the 145028th position in the national surname ranking.
Among Census respondents with the surname Iaciofano, the largest self-reported group is White at 90.5%. The next largest groups are Hispanic (5.2%) and Asian/Pacific Islander (2.6%).
Origin
Meaning and origin of Iaciofano
The surname Iaciofano has its roots in Italy, originating in the region of Tuscany during the Middle Ages. It is believed to have derived from the Italian word "iacio," meaning "I lie down," and the suffix "-fano," which suggests a place of origin or residence. This combination points to the name's connection with a particular location where the original bearers may have lived or worked.
One of the earliest recorded instances of the name Iaciofano can be traced back to the 13th century, appearing in various municipal records and documents from the city of Florence. During this period, surnames were becoming more prevalent as a way to distinguish individuals within growing communities.
In the 14th century, a notable figure bearing the name Iaciofano was Iaciofano di Guido, a Florentine merchant and banker who played a significant role in the city's thriving textile trade. His business dealings and influence within the powerful guilds of Florence solidified the Iaciofano name's association with commerce and economic prosperity.
The Iaciofano family's prominence continued into the Renaissance era, with several members holding positions of influence in the arts and politics. Niccolò Iaciofano, born in 1475, was a renowned sculptor and architect who contributed to the construction of notable buildings in Florence, including the Basilica of San Lorenzo.
Another distinguished individual was Bernardo Iaciofano, a 16th-century humanist and philosopher born in Siena. His works on ethics and moral philosophy garnered widespread recognition among scholars of the time, solidifying the Iaciofano name in the realm of intellectual discourse.
In the 17th century, the Iaciofano surname gained further prominence with the birth of Taddeo Iaciofano, a celebrated painter and fresco artist. His masterpieces adorned the walls of numerous churches and palaces throughout Italy, cementing his legacy as a master of the Baroque style.
As the centuries progressed, the Iaciofano name spread beyond the borders of Tuscany, with branches of the family establishing themselves in other regions of Italy and even abroad. However, the name's origins and deep-rooted ties to the Tuscan region remained an integral part of its historical identity.
Demographics
Ancestry and ethnicity for Iaciofano
Among Census respondents with the surname Iaciofano, the largest self-reported group is White at 90.5%. The next largest groups are Hispanic (5.2%) and Asian/Pacific Islander (2.6%).
The bar chart below shows how Iaciofano 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 Iaciofano surname at the time of the 2020 Census, not any inherent property of the name itself.
- White90.5% · 105
- Hispanic or Latino5.2% · 6
- Asian and Pacific Islander2.6% · 3
- Two or more races1.7% · 2
Timeline
Historical Census data for Iaciofano
Iaciofano 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
#145,028
National surname rank
Recorded bearers 116
-1 bearers (-0.9%)
Per 100,000 0.04
Rank movement Down 2,920 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2010 | #142,108 | 117 | 0.04 | First available Census row | First available Census row |
| 2020 | #145,028 | 116 | 0.04 | -1 bearers (-0.9%) | Down 2,920 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 Iaciofano 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 | #142,108 | #145,028 | -2.1% |
| Count | 117 | 116 | -0.9% |
| Per 100K | 0.04 | 0.04 | -3.0% |
Between the 2010 and 2020 Census, the number of Iaciofano bearers went from 117 to 116 (-0.9% change). The surname moved down 2,920 positions in the national ranking, going from #142,108 to #145,028.
FAQ
Iaciofano surname: questions and answers
How many people in the U.S. have the surname Iaciofano?
Name Census estimates that about 133 living Americans carry the surname Iaciofano. Using the current population baseline, that works out to roughly 1 in 2,577,100 residents.
How common is Iaciofano?
Iaciofano ranks #145,028 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 116 people with the surname Iaciofano. That is different from the site's living-bearer estimate (133), 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 Iaciofano.
Has Iaciofano become more or less common over time?
Between 2010 and 2020, the surname Iaciofano went from 117 recorded bearers to 116. That is a decrease of 1 (-0.9%). In the national ranking it fell from #142,108 to #145,028.
What does the Census say about the background of Iaciofano?
Among Census respondents with the surname Iaciofano, the largest self-reported group is White at 90.5%. The next largest groups are Hispanic (5.2%) 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 Iaciofano in the 2020 Census, accounting for 90.5% (105 people in the source table).
What is the full ancestry breakdown?
Iaciofano appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are White (90.5%), Hispanic (5.2%), 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 Iaciofano (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 Iaciofano mean?
Italian occupational surname meaning "a maker of sieves or strainers." 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 Iaciofano (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 common is the surname Iaciofano?
See how many people are called Iaciofano on HowManyOfMe.org, our sister site built around that single question.