2000
#10,665
National surname rank
Recorded bearers 2,753
First available Census row
Per 100,000 1.02
Rare Last name
Mazariegos
A Spanish habitational surname referring to someone from any of the various places called Mazariegos in Spain.
According to the 2020 US Census Bureau surname tables, roughly 7,062 Americans carry the last name Mazariegos. That puts it at #5,460 in the national surname ranking, appearing at a frequency of 2.06 per 100,000 people (about 1 in 48,535 residents).
This page is the full Name Census profile for the Mazariegos 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
7.1K
1 in 48,535
Census rank
#5,460
2020 decennial data
Per 100,000
2.1
Frequency rate
Recorded bearers
6.2K
rare in the US
Popularity narrative
The Census Bureau recorded 6,158 bearers of the surname Mazariegos in its 2020 decennial surname file. At a rate of 2.06 per 100,000 residents, it holds the 5460th position in the national surname ranking.
Among Census respondents with the surname Mazariegos, the largest self-reported group is Hispanic at 95.8%. The next largest groups are White (3.4%) and Black (0.5%).
Origin
Meaning and origin of Mazariegos
The surname Mazariegos originates from Spain and dates back to the 15th century. It is derived from the Spanish toponym "Mazariegos," which refers to a village or small town in the region of Castile and León. The name itself is likely a combination of the Basque word "maza," meaning "oak tree," and the Spanish suffix "-riego," indicating an area with a source of water or irrigation.
One of the earliest recorded instances of the name Mazariegos can be found in the archives of the Archdiocese of Burgos, where it is mentioned in a document dated 1487. This document refers to a certain Pedro Mazariegos, a landowner in the village of the same name.
During the era of Spanish exploration and colonization of the Americas in the 16th and 17th centuries, several individuals bearing the surname Mazariegos participated in various expeditions and settlements. For instance, Juan Mazariegos (1520-1592) was a Spanish conquistador who accompanied Hernán Cortés in the conquest of Mexico and later served as a colonial administrator in Guatemala.
Another notable figure was Gaspar Mazariegos (1572-1638), a Spanish-born Catholic priest who worked as a missionary in Guatemala and authored several religious texts in the K'iche' language, contributing to the preservation of indigenous cultural heritage.
In the 18th century, Diego Mazariegos (1712-1785) was a prominent military officer and colonial administrator who served as the governor of Panama from 1761 to 1767.
During the Spanish colonial period in the Philippines, the surname Mazariegos also appeared in various records. One such individual was Tomás Mazariegos (1733-1802), a Spanish sailor and navigator who participated in several scientific expeditions in the Pacific Ocean and helped chart the waters around the Philippine archipelago.
In more recent history, Manuel Mazariegos (1885-1958) was a Guatemalan writer and journalist who played a significant role in the cultural renaissance of his country in the early 20th century.
Demographics
Ancestry and ethnicity for Mazariegos
Among Census respondents with the surname Mazariegos, the largest self-reported group is Hispanic at 95.8%. The next largest groups are White (3.4%) and Black (0.5%).
The bar chart below shows how Mazariegos 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 Mazariegos surname at the time of the 2020 Census, not any inherent property of the name itself.
- Hispanic or Latino95.8% · 5,898
- White3.4% · 207
- Black or African American0.5% · 28
- Asian and Pacific Islander0.2% · 11
- Two or more races0.2% · 10
- American Indian and Alaska Native0.1% · 4
Timeline
Historical Census data for Mazariegos
Mazariegos 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
#6,465
National surname rank
Recorded bearers 5,255
+2,502 bearers (+90.9%)
Per 100,000 1.78
Rank movement Up 4,200 places
2020
#5,460
National surname rank
Recorded bearers 6,158
+903 bearers (+17.2%)
Per 100,000 2.06
Rank movement Up 1,005 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2000 | #10,665 | 2,753 | 1.02 | First available Census row | First available Census row |
| 2010 | #6,465 | 5,255 | 1.78 | +2,502 bearers (+90.9%) | Up 4,200 places |
| 2020 | #5,460 | 6,158 | 2.06 | +903 bearers (+17.2%) | Up 1,005 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 Mazariegos 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 | #6,465 | #5,460 | 15.5% |
| Count | 5,255 | 6,158 | 17.2% |
| Per 100K | 1.78 | 2.06 | 15.7% |
Between the 2010 and 2020 Census, the number of Mazariegos bearers went from 5,255 to 6,158 (+17.2% change). The surname moved up 1,005 positions in the national ranking, going from #6,465 to #5,460.
FAQ
Mazariegos surname: questions and answers
How many people in the U.S. have the surname Mazariegos?
Name Census estimates that about 7,062 living Americans carry the surname Mazariegos. Using the current population baseline, that works out to roughly 1 in 48,535 residents.
How common is Mazariegos?
Mazariegos ranks #5,460 in the 2020 Census surname tables and is classified on this site as "Rare." The Census recorded the name at a frequency of 2.06 per 100,000 residents, which is about 2 people out of every 100,000.
How many people with this surname were counted in the Census?
The raw 2020 Census file counted 6,158 people with the surname Mazariegos. That is different from the site's living-bearer estimate (7,062), which projects the surname's present-day count by applying the Census frequency rate to the current U.S. population.
What does 2.06 per 100,000 actually mean?
It is the Census Bureau's normalized frequency measure. A rate of 2.06 per 100,000 means that if you picked a random group of 100,000 U.S. residents, you would expect about 2 of them to have the surname Mazariegos.
Has Mazariegos become more or less common over time?
Between 2010 and 2020, the surname Mazariegos went from 5,255 recorded bearers to 6,158. That is an increase of 903 (+17.2%). In the national ranking it rose from #6,465 to #5,460.
What does the Census say about the background of Mazariegos?
Among Census respondents with the surname Mazariegos, the largest self-reported group is Hispanic at 95.8%. The next largest groups are White (3.4%) and Black (0.5%). 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 Mazariegos in the 2020 Census, accounting for 95.8% (5,898 people in the source table).
What is the full ancestry breakdown?
Mazariegos appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are Hispanic (95.8%), White (3.4%), Black (0.5%). 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 Mazariegos (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 Mazariegos mean?
A Spanish habitational surname referring to someone from any of the various places called Mazariegos 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 Mazariegos (2.06 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 Mazariegos?
HowManyOfMe.org, our sister site, answers that with the living-bearer count in one glance.