2010
#157,234
National surname rank
Recorded bearers 103
First available Census row
Per 100,000 0.03
Very Rare Last name
Betonio
A surname of Spanish origin meaning someone from the town of Betono.
According to the 2020 US Census Bureau surname tables, roughly 134 Americans carry the last name Betonio. That puts it at #144,270 in the national surname ranking, appearing at a frequency of 0.04 per 100,000 people (about 1 in 2,557,868 residents).
This page is the full Name Census profile for the Betonio 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
134
1 in 2,557,868
Census rank
#144,270
2020 decennial data
Per 100,000
0.0
Frequency rate
Recorded bearers
117
very rare in the US
Popularity narrative
The Census Bureau recorded 117 bearers of the surname Betonio in its 2020 decennial surname file. At a rate of 0.04 per 100,000 residents, it holds the 144270th position in the national surname ranking.
Among Census respondents with the surname Betonio, the largest self-reported group is Asian/Pacific Islander at 68.4%. The next largest groups are Hispanic (15.4%) and Two or More Races (8.5%).
Origin
Meaning and origin of Betonio
The surname Betonio has its origins in Italy, where it first emerged in the early 14th century. It is believed to be derived from the Latin word "bitumen," which refers to a type of asphalt or tar-like substance found in certain regions of Italy. The name likely originated as a descriptive term for individuals who lived near or worked with this natural resource.
In the medieval period, the name Betonio appeared in various historical records and documents, particularly in the regions of Tuscany and Umbria. One of the earliest known references to the name can be found in the "Liber Censuum," a 14th-century manuscript compiled by the Apostolic Chamber, which recorded the names of landowners and taxpayers in the Papal States.
The first recorded bearer of the surname Betonio was Giovanni Betonio, a merchant from Siena who was mentioned in a trade agreement with the city of Florence in 1327. Another notable figure was Piero Betonio, a renowned architect from Perugia who designed several churches and palaces in the region during the 15th century.
In the 16th century, the Betonio family gained prominence in the city of Orvieto, where they were involved in the local government and held influential positions. One member, Girolamo Betonio (1522-1587), served as the podestà (chief magistrate) of Orvieto and was also a respected scholar and author.
During the Renaissance period, the name Betonio was also associated with the arts. Francesco Betonio (1480-1535) was a celebrated painter from Terni, known for his religious works commissioned by various churches and noble families in Umbria.
Another notable figure was Cesare Betonio (1565-1629), a Jesuit priest and mathematician from Bologna who authored several treatises on mathematics and astronomy. His works were widely studied and cited by scholars of the time.
As the Betonio family spread throughout Italy over the centuries, the name underwent various spelling variations, such as Bettoni, Bettonio, and Bettunio. These variations were often influenced by regional dialects and local pronunciations.
While the surname Betonio is not as common today as it once was, it remains a part of Italy's rich cultural and historical tapestry, reflecting the diverse origins and contributions of its people throughout the centuries.
Demographics
Ancestry and ethnicity for Betonio
Among Census respondents with the surname Betonio, the largest self-reported group is Asian/Pacific Islander at 68.4%. The next largest groups are Hispanic (15.4%) and Two or More Races (8.5%).
The bar chart below shows how Betonio 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 Betonio surname at the time of the 2020 Census, not any inherent property of the name itself.
- Asian and Pacific Islander68.4% · 80
- Hispanic or Latino15.4% · 18
- Two or more races8.5% · 10
- White6.8% · 8
- American Indian and Alaska Native0.9% · 1
Timeline
Historical Census data for Betonio
Betonio 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
#144,270
National surname rank
Recorded bearers 117
+14 bearers (+13.6%)
Per 100,000 0.04
Rank movement Up 12,964 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2010 | #157,234 | 103 | 0.03 | First available Census row | First available Census row |
| 2020 | #144,270 | 117 | 0.04 | +14 bearers (+13.6%) | Up 12,964 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 Betonio 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 | #157,234 | #144,270 | 8.2% |
| Count | 103 | 117 | 13.6% |
| Per 100K | 0.03 | 0.04 | 30.5% |
Between the 2010 and 2020 Census, the number of Betonio bearers went from 103 to 117 (+13.6% change). The surname moved up 12,964 positions in the national ranking, going from #157,234 to #144,270.
FAQ
Betonio surname: questions and answers
How many people in the U.S. have the surname Betonio?
Name Census estimates that about 134 living Americans carry the surname Betonio. Using the current population baseline, that works out to roughly 1 in 2,557,868 residents.
How common is Betonio?
Betonio ranks #144,270 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 117 people with the surname Betonio. That is different from the site's living-bearer estimate (134), 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 Betonio.
Has Betonio become more or less common over time?
Between 2010 and 2020, the surname Betonio went from 103 recorded bearers to 117. That is an increase of 14 (+13.6%). In the national ranking it rose from #157,234 to #144,270.
What does the Census say about the background of Betonio?
Among Census respondents with the surname Betonio, the largest self-reported group is Asian/Pacific Islander at 68.4%. The next largest groups are Hispanic (15.4%) and Two or More Races (8.5%). 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?
Asian/Pacific Islander is the largest self-reported group for the surname Betonio in the 2020 Census, accounting for 68.4% (80 people in the source table).
What is the full ancestry breakdown?
Betonio appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are Asian/Pacific Islander (68.4%), Hispanic (15.4%), Two or More Races (8.5%). 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 Betonio (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 Betonio mean?
A surname of Spanish origin meaning someone from the town of Betono. 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 Betonio (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 share the surname Betonio?
For a quick modern estimate, our sister site HowManyOfMe.org answers that in one glance, with the living-bearer count front and centre.