2000
#118,236
National surname rank
Recorded bearers 136
First available Census row
Per 100,000 0.05
Very Rare Last name
Rello
A surname of Italian origin, possibly derived from a nickname related to physical appearance.
According to the 2020 US Census Bureau surname tables, roughly 135 Americans carry the last name Rello. That puts it at #143,511 in the national surname ranking, appearing at a frequency of 0.04 per 100,000 people (about 1 in 2,538,921 residents).
This page is the full Name Census profile for the Rello 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
135
1 in 2,538,921
Census rank
#143,511
2020 decennial data
Per 100,000
0.0
Frequency rate
Recorded bearers
118
very rare in the US
Popularity narrative
The Census Bureau recorded 118 bearers of the surname Rello in its 2020 decennial surname file. At a rate of 0.04 per 100,000 residents, it holds the 143511th position in the national surname ranking.
Among Census respondents with the surname Rello, the largest self-reported group is White at 75.4%. The next largest groups are Hispanic (24.6%).
Origin
Meaning and origin of Rello
The surname RELLO is of Spanish origin and can be traced back to the 12th century. It is believed to have originated from the region of Aragon, which was an independent kingdom at that time. The name is thought to be derived from the Aragonese word 'rello', meaning 'small' or 'little'.
One of the earliest recorded instances of the surname RELLO appeared in the Libro de la Cadena, a historical document from the town of Jaca, Aragon, dated around 1270. This document mentioned a certain Pedro RELLO, who was a prominent landowner in the area.
In the 14th century, the surname RELLO gained prominence with the rise of the noble Aragonese family of the same name. The most notable member of this family was Juan RELLO, who served as the Governor of Aragon during the reign of King Alfonso V of Aragon in the early 15th century.
Another notable figure bearing the surname RELLO was Jerónimo RELLO, a Spanish explorer and navigator who accompanied Christopher Columbus on his second voyage to the Americas in 1493. RELLO was one of the first Europeans to set foot on the island of Puerto Rico.
In the 16th century, the surname RELLO was found in various parts of Spain, particularly in the regions of Aragon, Catalonia, and Valencia. One prominent individual was Gaspar RELLO, a renowned architect who was responsible for designing several notable buildings in Barcelona, including the Monastery of Pedralbes.
During the colonial era, the surname RELLO was carried across the Atlantic to the Spanish territories in the Americas. One of the earliest recorded instances of this was Juan RELLO, who was born in Seville, Spain, in 1595 and later became a prominent landowner in the Spanish colonies of Mexico.
As the centuries passed, the surname RELLO continued to be found in various parts of the Spanish-speaking world, including Latin America and the Philippines, which were once under Spanish rule. However, its roots can be traced back to the medieval Kingdom of Aragon and the small town of Jaca, where the name first gained prominence.
Demographics
Ancestry and ethnicity for Rello
Among Census respondents with the surname Rello, the largest self-reported group is White at 75.4%. The next largest groups are Hispanic (24.6%).
The bar chart below shows how Rello 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 Rello surname at the time of the 2020 Census, not any inherent property of the name itself.
- White75.4% · 89
- Hispanic or Latino24.6% · 29
Timeline
Historical Census data for Rello
Rello 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
#118,185
National surname rank
Recorded bearers 147
+11 bearers (+8.1%)
Per 100,000 0.05
Rank movement Up 51 places
2020
#143,511
National surname rank
Recorded bearers 118
-29 bearers (-19.7%)
Per 100,000 0.04
Rank movement Down 25,326 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2000 | #118,236 | 136 | 0.05 | First available Census row | First available Census row |
| 2010 | #118,185 | 147 | 0.05 | +11 bearers (+8.1%) | Up 51 places |
| 2020 | #143,511 | 118 | 0.04 | -29 bearers (-19.7%) | Down 25,326 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 Rello 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 | #118,185 | #143,511 | -21.4% |
| Count | 147 | 118 | -19.7% |
| Per 100K | 0.05 | 0.04 | -21.0% |
Between the 2010 and 2020 Census, the number of Rello bearers went from 147 to 118 (-19.7% change). The surname moved down 25,326 positions in the national ranking, going from #118,185 to #143,511.
FAQ
Rello surname: questions and answers
How many people in the U.S. have the surname Rello?
Name Census estimates that about 135 living Americans carry the surname Rello. Using the current population baseline, that works out to roughly 1 in 2,538,921 residents.
How common is Rello?
Rello ranks #143,511 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 118 people with the surname Rello. That is different from the site's living-bearer estimate (135), 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 Rello.
Has Rello become more or less common over time?
Between 2010 and 2020, the surname Rello went from 147 recorded bearers to 118. That is a decrease of 29 (-19.7%). In the national ranking it fell from #118,185 to #143,511.
What does the Census say about the background of Rello?
Among Census respondents with the surname Rello, the largest self-reported group is White at 75.4%. The next largest groups are Hispanic (24.6%). 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 Rello in the 2020 Census, accounting for 75.4% (89 people in the source table).
What is the full ancestry breakdown?
Rello appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are White (75.4%), Hispanic (24.6%). 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 Rello (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 Rello mean?
A surname of Italian origin, possibly derived from a nickname related to physical appearance. 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 Rello (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 Rello?
For a quick modern estimate, our sister site HowManyOfMe.org answers that in one glance, with the living-bearer count front and centre.