2000
#143,847
National surname rank
Recorded bearers 106
First available Census row
Per 100,000 0.04
Very Rare Last name
Tondi
A surname of Italian origin meaning "round" or "rotund".
According to the 2020 US Census Bureau surname tables, roughly 131 Americans carry the last name Tondi. That puts it at #146,495 in the national surname ranking, appearing at a frequency of 0.04 per 100,000 people (about 1 in 2,616,445 residents).
This page is the full Name Census profile for the Tondi 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
131
1 in 2,616,445
Census rank
#146,495
2020 decennial data
Per 100,000
0.0
Frequency rate
Recorded bearers
114
very rare in the US
Popularity narrative
The Census Bureau recorded 114 bearers of the surname Tondi in its 2020 decennial surname file. At a rate of 0.04 per 100,000 residents, it holds the 146495th position in the national surname ranking.
Among Census respondents with the surname Tondi, the largest self-reported group is White at 94.7%. The next largest groups are Black (5.3%).
Origin
Meaning and origin of Tondi
The surname Tondi originated in Italy, believed to have derived from an Italian word meaning "round" or "plump." It was likely a nickname given to someone with a rotund physical appearance in the Middle Ages.
Tondi is a locational surname, meaning it originated from a specific town or village. It is thought to have originated in the Lazio region of central Italy, particularly around the city of Rome. Some genealogists suggest the name may have roots in the ancient Roman family name Tondius or Tondus.
One of the earliest recorded instances of the name Tondi can be found in a 14th-century document from the town of Viterbo, near Rome, which mentions a "Giovanni Tondi." Additionally, a 15th-century record from the Vatican Archives lists a "Niccolò Tondi" from the city of Rome.
In the 16th century, a notable figure named Matteo Tondi (1505-1595) was a renowned Italian painter and architect from the town of Treviso. He is best known for his frescoes in the Basilica of San Marco in Venice.
Another prominent individual with the surname Tondi was Ruggiero Tondi (1570-1632), an Italian composer and organist from Naples. He served as the chapel master at the Basilica of Santa Maria Maggiore in Rome.
In the 17th century, Giulio Tondi (1620-1688) was a respected Italian jurist and legal scholar from the city of Bologna. He published several influential works on Roman law and civil procedure.
During the 18th century, Giovanni Battista Tondi (1735-1811) was a celebrated Italian sculptor from the town of Carrara. His works can be found in various churches and museums throughout Italy.
In the 19th century, Vincenzo Tondi (1825-1898) was an Italian politician and statesman from the Abruzzo region. He served as a member of the Italian Parliament and was involved in the Risorgimento movement for Italian unification.
The surname Tondi has been present in various regions of Italy for centuries, with some variations in spelling, such as Tondini, Tondino, and Tondelli. While its exact origins may be uncertain, the name has a long and rich history within Italian culture and heritage.
Demographics
Ancestry and ethnicity for Tondi
Among Census respondents with the surname Tondi, the largest self-reported group is White at 94.7%. The next largest groups are Black (5.3%).
The bar chart below shows how Tondi 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 Tondi surname at the time of the 2020 Census, not any inherent property of the name itself.
- White94.7% · 108
- Black or African American5.3% · 6
Timeline
Historical Census data for Tondi
Tondi 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
#150,452
National surname rank
Recorded bearers 109
+3 bearers (+2.8%)
Per 100,000 0.04
Rank movement Down 6,605 places
2020
#146,495
National surname rank
Recorded bearers 114
+5 bearers (+4.6%)
Per 100,000 0.04
Rank movement Up 3,957 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2000 | #143,847 | 106 | 0.04 | First available Census row | First available Census row |
| 2010 | #150,452 | 109 | 0.04 | +3 bearers (+2.8%) | Down 6,605 places |
| 2020 | #146,495 | 114 | 0.04 | +5 bearers (+4.6%) | Up 3,957 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 Tondi 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 | #150,452 | #146,495 | 2.6% |
| Count | 109 | 114 | 4.6% |
| Per 100K | 0.04 | 0.04 | -4.6% |
Between the 2010 and 2020 Census, the number of Tondi bearers went from 109 to 114 (+4.6% change). The surname moved up 3,957 positions in the national ranking, going from #150,452 to #146,495.
FAQ
Tondi surname: questions and answers
How many people in the U.S. have the surname Tondi?
Name Census estimates that about 131 living Americans carry the surname Tondi. Using the current population baseline, that works out to roughly 1 in 2,616,445 residents.
How common is Tondi?
Tondi ranks #146,495 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 114 people with the surname Tondi. That is different from the site's living-bearer estimate (131), 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 Tondi.
Has Tondi become more or less common over time?
Between 2010 and 2020, the surname Tondi went from 109 recorded bearers to 114. That is an increase of 5 (+4.6%). In the national ranking it rose from #150,452 to #146,495.
What does the Census say about the background of Tondi?
Among Census respondents with the surname Tondi, the largest self-reported group is White at 94.7%. The next largest groups are Black (5.3%). 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 Tondi in the 2020 Census, accounting for 94.7% (108 people in the source table).
What is the full ancestry breakdown?
Tondi appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are White (94.7%), Black (5.3%). 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 Tondi (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 Tondi mean?
A surname of Italian origin meaning "round" or "rotund". 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 Tondi (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 Tondi?
For a quick modern estimate, our sister site HowManyOfMe.org answers that in one glance, with the living-bearer count front and centre.