2000
#147,095
National surname rank
Recorded bearers 103
First available Census row
Per 100,000 0.04
Very Rare Last name
Roncaglione
A surname originating from the Italian word "roncaglia", referring to a small uncultivated field or woodland area.
According to the 2020 US Census Bureau surname tables, roughly 120 Americans carry the last name Roncaglione. That puts it at #152,989 in the national surname ranking, appearing at a frequency of 0.04 per 100,000 people (about 1 in 2,856,286 residents).
This page is the full Name Census profile for the Roncaglione 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
120
1 in 2,856,286
Census rank
#152,989
2020 decennial data
Per 100,000
0.0
Frequency rate
Recorded bearers
105
very rare in the US
Popularity narrative
The Census Bureau recorded 105 bearers of the surname Roncaglione in its 2020 decennial surname file. At a rate of 0.04 per 100,000 residents, it holds the 152989th position in the national surname ranking.
Among Census respondents with the surname Roncaglione, the largest self-reported group is White at 94.3%. The next largest groups are Hispanic (1.9%) and Black (1.0%).
Origin
Meaning and origin of Roncaglione
The surname Roncaglione has its origins in Italy, specifically in the northern region of Lombardy. It is believed to have emerged around the 13th century, deriving from the Italian word "ronca," which refers to a type of hoe or mattock used for cultivating land.
The name is thought to have originated as a descriptive surname, indicating an individual's occupation or association with agriculture and land cultivation. It may have been initially given to someone who worked with a ronca or was involved in clearing and tilling land.
One of the earliest recorded instances of the name Roncaglione can be found in the archives of the city of Milan, where a document dated 1297 mentions a certain "Petrus Roncaglione" as a landowner in the surrounding area.
In the 14th century, the Roncaglione family gained prominence in the town of Monza, situated near Milan. Historical records from that period mention a Francesco Roncaglione, who served as a local magistrate and played a significant role in the town's governance.
During the Renaissance, the Roncaglione name appeared in various literary works and documents. A notable figure from this era was the poet and scholar Girolamo Roncaglione (1470-1536), who was renowned for his contributions to Italian literature and his scholarly works on ancient Roman history.
In the 17th century, the Roncaglione family had established itself in the city of Bergamo, where they were involved in the silk trade and textile industry. One prominent member of the family during this time was Bartolomeo Roncaglione (1612-1681), a successful merchant and patron of the arts.
Another notable figure with the surname Roncaglione was the architect and engineer Giovanni Battista Roncaglione (1723-1798), who was responsible for designing several notable buildings and infrastructure projects in the cities of Milan and Pavia.
Throughout its history, the Roncaglione surname has also been associated with various religious figures. One such individual was Father Antonio Roncaglione (1790-1865), a Catholic priest and theologian who served as a professor at the University of Pavia and authored several influential works on Catholic doctrine.
While the surname Roncaglione has its roots in northern Italy, over the centuries, individuals bearing this name have spread to other parts of the country and beyond, contributing to various fields and leaving their mark on history.
Demographics
Ancestry and ethnicity for Roncaglione
Among Census respondents with the surname Roncaglione, the largest self-reported group is White at 94.3%. The next largest groups are Hispanic (1.9%) and Black (1.0%).
The bar chart below shows how Roncaglione 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 Roncaglione surname at the time of the 2020 Census, not any inherent property of the name itself.
- White94.3% · 99
- Hispanic or Latino1.9% · 2
- Black or African American1.0% · 1
- Asian and Pacific Islander1.0% · 1
- American Indian and Alaska Native1.0% · 1
- Two or more races1.0% · 1
Timeline
Historical Census data for Roncaglione
Roncaglione 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
#147,253
National surname rank
Recorded bearers 112
+9 bearers (+8.7%)
Per 100,000 0.04
Rank movement Down 158 places
2020
#152,989
National surname rank
Recorded bearers 105
-7 bearers (-6.3%)
Per 100,000 0.04
Rank movement Down 5,736 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2000 | #147,095 | 103 | 0.04 | First available Census row | First available Census row |
| 2010 | #147,253 | 112 | 0.04 | +9 bearers (+8.7%) | Down 158 places |
| 2020 | #152,989 | 105 | 0.04 | -7 bearers (-6.3%) | Down 5,736 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 Roncaglione 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 | #147,253 | #152,989 | -3.9% |
| Count | 112 | 105 | -6.3% |
| Per 100K | 0.04 | 0.04 | -12.2% |
Between the 2010 and 2020 Census, the number of Roncaglione bearers went from 112 to 105 (-6.3% change). The surname moved down 5,736 positions in the national ranking, going from #147,253 to #152,989.
FAQ
Roncaglione surname: questions and answers
How many people in the U.S. have the surname Roncaglione?
Name Census estimates that about 120 living Americans carry the surname Roncaglione. Using the current population baseline, that works out to roughly 1 in 2,856,286 residents.
How common is Roncaglione?
Roncaglione ranks #152,989 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 105 people with the surname Roncaglione. That is different from the site's living-bearer estimate (120), 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 Roncaglione.
Has Roncaglione become more or less common over time?
Between 2010 and 2020, the surname Roncaglione went from 112 recorded bearers to 105. That is a decrease of 7 (-6.3%). In the national ranking it fell from #147,253 to #152,989.
What does the Census say about the background of Roncaglione?
Among Census respondents with the surname Roncaglione, the largest self-reported group is White at 94.3%. The next largest groups are Hispanic (1.9%) and Black (1.0%). 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 Roncaglione in the 2020 Census, accounting for 94.3% (99 people in the source table).
What is the full ancestry breakdown?
Roncaglione appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are White (94.3%), Hispanic (1.9%), Black (1.0%). 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 Roncaglione (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 Roncaglione mean?
A surname originating from the Italian word "roncaglia", referring to a small uncultivated field or woodland area. 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 Roncaglione (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 people have the last name Roncaglione?
Find out how common the surname Roncaglione is on our sister site HowManyOfMe.org — a quick modern estimate with the living-bearer count front and centre.