2010
#152,628
National surname rank
Recorded bearers 107
First available Census row
Per 100,000 0.04
Very Rare Last name
Mularoni
An occupational surname referring to a muleteer or someone who worked with mules.
According to the 2020 US Census Bureau surname tables, roughly 125 Americans carry the last name Mularoni. That puts it at #150,205 in the national surname ranking, appearing at a frequency of 0.04 per 100,000 people (about 1 in 2,742,035 residents).
This page is the full Name Census profile for the Mularoni 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
125
1 in 2,742,035
Census rank
#150,205
2020 decennial data
Per 100,000
0.0
Frequency rate
Recorded bearers
109
very rare in the US
Popularity narrative
The Census Bureau recorded 109 bearers of the surname Mularoni in its 2020 decennial surname file. At a rate of 0.04 per 100,000 residents, it holds the 150205th position in the national surname ranking.
Among Census respondents with the surname Mularoni, the largest self-reported group is White at 81.7%. The next largest groups are Hispanic (9.2%) and Two or More Races (7.3%).
Origin
Meaning and origin of Mularoni
The surname Mularoni is of Italian origin, tracing its roots back to the regions of Tuscany and Emilia-Romagna during the medieval period. It is believed to be derived from the Italian word "mulino," meaning mill, suggesting that the name's earliest bearers were likely associated with the operation or ownership of a mill.
One of the earliest recorded instances of the name Mularoni can be found in the Codice Diplomatico Longobardo, a collection of historical documents from the Lombard period in Italy, dating back to the 8th century. The name appears in a land grant document, indicating that a certain Mularoni family held property in the region.
In the 13th century, records from the city of Bologna mention a prominent citizen by the name of Guido Mularoni, who held a position of influence in the city's government. This suggests that the Mularoni family had established itself as a respected lineage in the area by that time.
During the Renaissance period, the Mularoni name was associated with the arts and intellectual pursuits. Cesare Mularoni (1510-1588), a scholar and poet from Modena, gained recognition for his works on classical literature and philosophy.
In the 17th century, the name appeared in the annals of the Catholic Church, with Pietro Mularoni (1620-1692) serving as a distinguished bishop in the town of Reggio Emilia. His tenure was marked by his efforts to promote education and support for the underprivileged in his diocese.
The 19th century saw the emergence of notable figures bearing the Mularoni name in the fields of science and engineering. Giulio Mularoni (1812-1892), a pioneering civil engineer from Parma, was renowned for his innovative contributions to bridge construction and urban infrastructure development.
Throughout its history, the Mularoni name has also been associated with various place names and localities in Italy. For instance, the small village of Mularoni in the province of Piacenza is thought to have derived its name from the local Mularoni family who once resided there.
While the surname Mularoni is not among the most common Italian surnames, it has left an indelible mark on the country's history, spanning diverse fields and professions over the centuries. From its humble origins linked to mills to its later associations with intellectual and cultural pursuits, the Mularoni name continues to carry a rich legacy.
Demographics
Ancestry and ethnicity for Mularoni
Among Census respondents with the surname Mularoni, the largest self-reported group is White at 81.7%. The next largest groups are Hispanic (9.2%) and Two or More Races (7.3%).
The bar chart below shows how Mularoni 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 Mularoni surname at the time of the 2020 Census, not any inherent property of the name itself.
- White81.7% · 89
- Hispanic or Latino9.2% · 10
- Two or more races7.3% · 8
- Black or African American0.9% · 1
- Asian and Pacific Islander0.9% · 1
Timeline
Historical Census data for Mularoni
Mularoni 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
#150,205
National surname rank
Recorded bearers 109
+2 bearers (+1.9%)
Per 100,000 0.04
Rank movement Up 2,423 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2010 | #152,628 | 107 | 0.04 | First available Census row | First available Census row |
| 2020 | #150,205 | 109 | 0.04 | +2 bearers (+1.9%) | Up 2,423 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 Mularoni 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 | #152,628 | #150,205 | 1.6% |
| Count | 107 | 109 | 1.9% |
| Per 100K | 0.04 | 0.04 | -8.8% |
Between the 2010 and 2020 Census, the number of Mularoni bearers went from 107 to 109 (+1.9% change). The surname moved up 2,423 positions in the national ranking, going from #152,628 to #150,205.
FAQ
Mularoni surname: questions and answers
How many people in the U.S. have the surname Mularoni?
Name Census estimates that about 125 living Americans carry the surname Mularoni. Using the current population baseline, that works out to roughly 1 in 2,742,035 residents.
How common is Mularoni?
Mularoni ranks #150,205 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 109 people with the surname Mularoni. That is different from the site's living-bearer estimate (125), 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 Mularoni.
Has Mularoni become more or less common over time?
Between 2010 and 2020, the surname Mularoni went from 107 recorded bearers to 109. That is an increase of 2 (+1.9%). In the national ranking it rose from #152,628 to #150,205.
What does the Census say about the background of Mularoni?
Among Census respondents with the surname Mularoni, the largest self-reported group is White at 81.7%. The next largest groups are Hispanic (9.2%) and Two or More Races (7.3%). 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 Mularoni in the 2020 Census, accounting for 81.7% (89 people in the source table).
What is the full ancestry breakdown?
Mularoni appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are White (81.7%), Hispanic (9.2%), Two or More Races (7.3%). 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 Mularoni (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 Mularoni mean?
An occupational surname referring to a muleteer or someone who worked with mules. 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 Mularoni (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 Mularoni?
You can see how many Americans have the surname Mularoni on our sister site HowManyOfMe.org — same data roots, lighter UI.