2000
#150,436
National surname rank
Recorded bearers 100
First available Census row
Per 100,000 0.04
Very Rare Last name
Trello
An Italian surname potentially derived from Latin roots meaning "three" or "threefold."
According to the 2020 US Census Bureau surname tables, roughly 123 Americans carry the last name Trello. That puts it at #151,639 in the national surname ranking, appearing at a frequency of 0.04 per 100,000 people (about 1 in 2,786,621 residents).
This page is the full Name Census profile for the Trello 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
123
1 in 2,786,621
Census rank
#151,639
2020 decennial data
Per 100,000
0.0
Frequency rate
Recorded bearers
107
very rare in the US
Popularity narrative
The Census Bureau recorded 107 bearers of the surname Trello in its 2020 decennial surname file. At a rate of 0.04 per 100,000 residents, it holds the 151639th position in the national surname ranking.
Among Census respondents with the surname Trello, the largest self-reported group is White at 83.2%. The next largest groups are Hispanic (8.4%) and Two or More Races (5.6%).
Origin
Meaning and origin of Trello
The surname Trello is believed to have originated in Italy, specifically in the northern regions of the country. Its roots can be traced back to the 14th century, and it is thought to be derived from the Italian word "trello," which means a type of embroidery or decorative trim.
One of the earliest recorded instances of the name Trello can be found in a document from the city of Genoa, dated 1387, where a merchant named Giovanni Trello is mentioned. This suggests that the name was already in use among the affluent merchant class of the time.
During the 15th century, the Trello family had established itself as a prominent presence in the city of Milan. In 1472, a nobleman named Giacomo Trello was recorded as owning vast tracts of land and vineyards in the surrounding areas.
As the Renaissance period unfolded, the name Trello gained further recognition. In 1518, a renowned artist named Lucrezia Trello received commissions from prominent families in Florence to create intricate frescoes and paintings for their grand residences.
The Trello name also found its way into the annals of literature. In 1612, a poet named Antonio Trello published a collection of sonnets and verse that garnered critical acclaim among literary circles in Venice.
Another notable figure bearing the Trello surname was Giovanni Battista Trello, a skilled architect who lived in Rome during the 17th century. He was responsible for designing several churches and palaces that still stand as architectural marvels today.
In the 18th century, the Trello family expanded its influence beyond Italy. In 1756, a French nobleman named Francois Trello was appointed as an ambassador to the court of King Louis XV, representing the interests of the Italian city-states.
As the centuries passed, the Trello name continued to be associated with various fields, including the arts, sciences, and politics. In the 19th century, a scholar named Emilia Trello made significant contributions to the study of ancient Roman literature and archaeology.
Throughout its long and diverse history, the surname Trello has maintained its connection to its Italian roots, while also establishing a global presence through the accomplishments of its numerous bearers.
Demographics
Ancestry and ethnicity for Trello
Among Census respondents with the surname Trello, the largest self-reported group is White at 83.2%. The next largest groups are Hispanic (8.4%) and Two or More Races (5.6%).
The bar chart below shows how Trello 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 Trello surname at the time of the 2020 Census, not any inherent property of the name itself.
- White83.2% · 89
- Hispanic or Latino8.4% · 9
- Two or more races5.6% · 6
- American Indian and Alaska Native2.8% · 3
Timeline
Historical Census data for Trello
Trello 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
+12 bearers (+12.0%)
Per 100,000 0.04
Rank movement Up 3,183 places
2020
#151,639
National surname rank
Recorded bearers 107
-5 bearers (-4.5%)
Per 100,000 0.04
Rank movement Down 4,386 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2000 | #150,436 | 100 | 0.04 | First available Census row | First available Census row |
| 2010 | #147,253 | 112 | 0.04 | +12 bearers (+12.0%) | Up 3,183 places |
| 2020 | #151,639 | 107 | 0.04 | -5 bearers (-4.5%) | Down 4,386 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 Trello 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 | #151,639 | -3.0% |
| Count | 112 | 107 | -4.5% |
| Per 100K | 0.04 | 0.04 | -10.5% |
Between the 2010 and 2020 Census, the number of Trello bearers went from 112 to 107 (-4.5% change). The surname moved down 4,386 positions in the national ranking, going from #147,253 to #151,639.
FAQ
Trello surname: questions and answers
How many people in the U.S. have the surname Trello?
Name Census estimates that about 123 living Americans carry the surname Trello. Using the current population baseline, that works out to roughly 1 in 2,786,621 residents.
How common is Trello?
Trello ranks #151,639 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 107 people with the surname Trello. That is different from the site's living-bearer estimate (123), 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 Trello.
Has Trello become more or less common over time?
Between 2010 and 2020, the surname Trello went from 112 recorded bearers to 107. That is a decrease of 5 (-4.5%). In the national ranking it fell from #147,253 to #151,639.
What does the Census say about the background of Trello?
Among Census respondents with the surname Trello, the largest self-reported group is White at 83.2%. The next largest groups are Hispanic (8.4%) and Two or More Races (5.6%). 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 Trello in the 2020 Census, accounting for 83.2% (89 people in the source table).
What is the full ancestry breakdown?
Trello appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are White (83.2%), Hispanic (8.4%), Two or More Races (5.6%). 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 Trello (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 Trello mean?
An Italian surname potentially derived from Latin roots meaning "three" or "threefold." 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 Trello (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 Americans have the surname Trello?
For a quick modern estimate, our sister site HowManyOfMe.org answers that in one glance, with the living-bearer count front and centre.