2010
#136,449
National surname rank
Recorded bearers 123
First available Census row
Per 100,000 0.04
Very Rare Last name
Rembao
A Spanish surname believed to be derived from a place name in Spain.
According to the 2020 US Census Bureau surname tables, roughly 130 Americans carry the last name Rembao. That puts it at #147,221 in the national surname ranking, appearing at a frequency of 0.04 per 100,000 people (about 1 in 2,636,572 residents).
This page is the full Name Census profile for the Rembao 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
130
1 in 2,636,572
Census rank
#147,221
2020 decennial data
Per 100,000
0.0
Frequency rate
Recorded bearers
113
very rare in the US
Popularity narrative
The Census Bureau recorded 113 bearers of the surname Rembao in its 2020 decennial surname file. At a rate of 0.04 per 100,000 residents, it holds the 147221st position in the national surname ranking.
Among Census respondents with the surname Rembao, the largest self-reported group is Hispanic at 92.0%. The next largest groups are White (7.1%) and Black (0.9%).
Origin
Meaning and origin of Rembao
The surname REMBAO is of Portuguese origin, with its roots traced back to the 16th century. It is believed to have emerged in the northern regions of Portugal, particularly in the areas surrounding the city of Porto.
The name REMBAO is derived from the Portuguese word "rêmbo," which means "patch" or "mend." This suggests that the name may have initially been associated with individuals who worked as tailors, seamstresses, or in occupations related to mending or repairing clothing.
One of the earliest recorded instances of the name REMBAO can be found in the archives of the Monastery of Tibães, located in Braga, Portugal. The document, dated 1563, references a certain Joao REMBAO, who was a landowner in the region.
In the 17th century, the name REMBAO appeared in the baptismal records of the Parish of São Pedro de Miragaia, in Porto. A notable figure from this period was Sebastiao REMBAO (1624-1692), a merchant who played a significant role in the city's trade with England and the Netherlands.
During the 18th century, the REMBAO family expanded its influence, with several members holding prominent positions in the local government and clergy. Pedro REMBAO (1711-1784) was a renowned lawyer and judge in Porto, while his brother, Padre Antonio REMBAO (1718-1792), served as the parish priest in the nearby town of Maia.
As the REMBAO family prospered, they acquired land and properties in the surrounding areas, leading to the emergence of place names associated with their surname. One such example is the Quinta do REMBAO, a historic estate located in the municipality of Matosinhos, which remained in the family's possession for generations.
In the 19th century, the REMBAO name gained international recognition with the exploits of Joaquim REMBAO (1827-1901), a renowned navigator and explorer. Hailing from Porto, Joaquim REMBAO made significant contributions to the mapping of the African coastline and played a crucial role in the Portuguese colonial efforts in Angola and Mozambique.
Throughout its history, the surname REMBAO has been associated with individuals from various walks of life, including merchants, lawyers, clergy members, and explorers. While the name may have originated from humble beginnings, it has left an indelible mark on the cultural and historical fabric of Portugal.
Demographics
Ancestry and ethnicity for Rembao
Among Census respondents with the surname Rembao, the largest self-reported group is Hispanic at 92.0%. The next largest groups are White (7.1%) and Black (0.9%).
The bar chart below shows how Rembao 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 Rembao surname at the time of the 2020 Census, not any inherent property of the name itself.
- Hispanic or Latino92.0% · 104
- White7.1% · 8
- Black or African American0.9% · 1
Timeline
Historical Census data for Rembao
Rembao 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
#147,221
National surname rank
Recorded bearers 113
-10 bearers (-8.1%)
Per 100,000 0.04
Rank movement Down 10,772 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2010 | #136,449 | 123 | 0.04 | First available Census row | First available Census row |
| 2020 | #147,221 | 113 | 0.04 | -10 bearers (-8.1%) | Down 10,772 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 Rembao 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 | #136,449 | #147,221 | -7.9% |
| Count | 123 | 113 | -8.1% |
| Per 100K | 0.04 | 0.04 | -5.5% |
Between the 2010 and 2020 Census, the number of Rembao bearers went from 123 to 113 (-8.1% change). The surname moved down 10,772 positions in the national ranking, going from #136,449 to #147,221.
FAQ
Rembao surname: questions and answers
How many people in the U.S. have the surname Rembao?
Name Census estimates that about 130 living Americans carry the surname Rembao. Using the current population baseline, that works out to roughly 1 in 2,636,572 residents.
How common is Rembao?
Rembao ranks #147,221 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 113 people with the surname Rembao. That is different from the site's living-bearer estimate (130), 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 Rembao.
Has Rembao become more or less common over time?
Between 2010 and 2020, the surname Rembao went from 123 recorded bearers to 113. That is a decrease of 10 (-8.1%). In the national ranking it fell from #136,449 to #147,221.
What does the Census say about the background of Rembao?
Among Census respondents with the surname Rembao, the largest self-reported group is Hispanic at 92.0%. The next largest groups are White (7.1%) and Black (0.9%). 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?
Hispanic is the largest self-reported group for the surname Rembao in the 2020 Census, accounting for 92.0% (104 people in the source table).
What is the full ancestry breakdown?
Rembao appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are Hispanic (92.0%), White (7.1%), Black (0.9%). 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 Rembao (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 Rembao mean?
A Spanish surname believed to be derived from a place name in Spain. 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 Rembao (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 Rembao?
For a quick modern estimate, our sister site HowManyOfMe.org answers that in one glance, with the living-bearer count front and centre.