2000
#11,958
National surname rank
Recorded bearers 2,396
First available Census row
Per 100,000 0.89
Rare Last name
Mascorro
A Spanish surname likely derived from the Basque word "mazkorro," meaning "stunted" or "sickly."
According to the 2020 US Census Bureau surname tables, roughly 3,481 Americans carry the last name Mascorro. That puts it at #10,117 in the national surname ranking, appearing at a frequency of 1.02 per 100,000 people (about 1 in 98,464 residents).
This page is the full Name Census profile for the Mascorro 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
3.5K
1 in 98,464
Census rank
#10,117
2020 decennial data
Per 100,000
1.0
Frequency rate
Recorded bearers
3.0K
rare in the US
Popularity narrative
The Census Bureau recorded 3,036 bearers of the surname Mascorro in its 2020 decennial surname file. At a rate of 1.02 per 100,000 residents, it holds the 10117th position in the national surname ranking.
Among Census respondents with the surname Mascorro, the largest self-reported group is Hispanic at 90.8%. The next largest groups are White (7.9%) and American Indian/Alaska Native (0.4%).
Origin
Meaning and origin of Mascorro
The surname Mascorro originated in Spain during the medieval period. It is derived from the Spanish word "mascorro," which means "a shaggy-haired person" or "someone with unkempt hair." The name likely originated as a descriptive nickname for a person with a distinct physical appearance.
Historically, the Mascorro surname was found in various regions of Spain, particularly in the northern areas such as Asturias and Cantabria, where it has deep roots. The earliest recorded instances of the name can be traced back to the 13th and 14th centuries in medieval Spanish documents and records.
One of the earliest known references to the Mascorro surname can be found in the "Libro Becerro," a census-like document compiled in the 14th century during the reign of King Alfonso XI. This document recorded landowners and taxpayers in the regions of Castile and León, including individuals with the Mascorro surname.
In the 15th century, the Mascorro name appeared in the "Libro de Armería," a collection of coats of arms and family lineages. This suggests that by this time, the Mascorro family had established itself as a noble or distinguished lineage in certain parts of Spain.
One notable individual with the Mascorro surname was Juan Mascorro, a military commander who fought in the Reconquista, the long-lasting conflict between Christian and Moorish forces in the Iberian Peninsula during the Middle Ages. Juan Mascorro was born in the late 14th century and served under King Juan II of Castile.
Another prominent figure was Rodrigo Mascorro, a scholar and theologian who lived in the 16th century. He was known for his contributions to the study of canon law and served as a professor at the University of Salamanca, one of the oldest and most prestigious universities in Europe.
In the 17th century, Diego Mascorro was a renowned architect who worked on several notable projects, including the construction of the Basilica of Santa María in Vitoria-Gasteiz, a city in the Basque Country region of Spain.
During the 18th century, María Mascorro gained recognition as a skilled painter and portraitist. Her works were commissioned by wealthy patrons and can be found in various Spanish museums and private collections.
The Mascorro surname also has connections to certain place names in Spain, such as the village of Mascorros in the region of Cantabria, which likely took its name from the surname or vice versa, reflecting the historical presence of the Mascorro family in that area.
Demographics
Ancestry and ethnicity for Mascorro
Among Census respondents with the surname Mascorro, the largest self-reported group is Hispanic at 90.8%. The next largest groups are White (7.9%) and American Indian/Alaska Native (0.4%).
The bar chart below shows how Mascorro 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 Mascorro surname at the time of the 2020 Census, not any inherent property of the name itself.
- Hispanic or Latino90.8% · 2,757
- White7.9% · 241
- American Indian and Alaska Native0.4% · 13
- Two or more races0.4% · 12
- Black or African American0.3% · 10
- Asian and Pacific Islander0.1% · 3
Timeline
Historical Census data for Mascorro
Mascorro 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
#10,451
National surname rank
Recorded bearers 3,077
+681 bearers (+28.4%)
Per 100,000 1.04
Rank movement Up 1,507 places
2020
#10,117
National surname rank
Recorded bearers 3,036
-41 bearers (-1.3%)
Per 100,000 1.02
Rank movement Up 334 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2000 | #11,958 | 2,396 | 0.89 | First available Census row | First available Census row |
| 2010 | #10,451 | 3,077 | 1.04 | +681 bearers (+28.4%) | Up 1,507 places |
| 2020 | #10,117 | 3,036 | 1.02 | -41 bearers (-1.3%) | Up 334 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 Mascorro 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 | #10,451 | #10,117 | 3.2% |
| Count | 3,077 | 3,036 | -1.3% |
| Per 100K | 1.04 | 1.02 | -2.3% |
Between the 2010 and 2020 Census, the number of Mascorro bearers went from 3,077 to 3,036 (-1.3% change). The surname moved up 334 positions in the national ranking, going from #10,451 to #10,117.
FAQ
Mascorro surname: questions and answers
How many people in the U.S. have the surname Mascorro?
Name Census estimates that about 3,481 living Americans carry the surname Mascorro. Using the current population baseline, that works out to roughly 1 in 98,464 residents.
How common is Mascorro?
Mascorro ranks #10,117 in the 2020 Census surname tables and is classified on this site as "Rare." The Census recorded the name at a frequency of 1.02 per 100,000 residents, which is about 1 people out of every 100,000.
How many people with this surname were counted in the Census?
The raw 2020 Census file counted 3,036 people with the surname Mascorro. That is different from the site's living-bearer estimate (3,481), which projects the surname's present-day count by applying the Census frequency rate to the current U.S. population.
What does 1.02 per 100,000 actually mean?
It is the Census Bureau's normalized frequency measure. A rate of 1.02 per 100,000 means that if you picked a random group of 100,000 U.S. residents, you would expect about 1 of them to have the surname Mascorro.
Has Mascorro become more or less common over time?
Between 2010 and 2020, the surname Mascorro went from 3,077 recorded bearers to 3,036. That is a decrease of 41 (-1.3%). In the national ranking it rose from #10,451 to #10,117.
What does the Census say about the background of Mascorro?
Among Census respondents with the surname Mascorro, the largest self-reported group is Hispanic at 90.8%. The next largest groups are White (7.9%) and American Indian/Alaska Native (0.4%). 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 Mascorro in the 2020 Census, accounting for 90.8% (2,757 people in the source table).
What is the full ancestry breakdown?
Mascorro appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are Hispanic (90.8%), White (7.9%), American Indian/Alaska Native (0.4%). 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 Mascorro (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 Mascorro mean?
A Spanish surname likely derived from the Basque word "mazkorro," meaning "stunted" or "sickly." 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 Mascorro (1.02 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 have the surname Mascorro?
HowManyOfMe.org, our sister site, answers that with the living-bearer count in one glance.