2010
#153,769
National surname rank
Recorded bearers 106
First available Census row
Per 100,000 0.04
Very Rare Last name
Mierez
A shortened Spanish form of the patronymic surname "Ramírez".
According to the 2020 US Census Bureau surname tables, roughly 120 Americans carry the last name Mierez. That puts it at #152,989 in the national surname ranking, appearing at a frequency of 0.04 per 100,000 people (about 1 in 2,856,286 residents).
This page is the full Name Census profile for the Mierez 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
120
1 in 2,856,286
Census rank
#152,989
2020 decennial data
Per 100,000
0.0
Frequency rate
Recorded bearers
105
very rare in the US
Popularity narrative
The Census Bureau recorded 105 bearers of the surname Mierez in its 2020 decennial surname file. At a rate of 0.04 per 100,000 residents, it holds the 152989th position in the national surname ranking.
Among Census respondents with the surname Mierez, the largest self-reported group is Black at 61.9%. The next largest groups are Hispanic (28.6%) and White (5.7%).
Origin
Meaning and origin of Mierez
The surname MIEREZ is believed to have originated in Spain during the medieval period. It likely derived from the Spanish word "miel," which means honey, and the suffix "-ez," which denotes a place of origin or residence. This suggests that the earliest bearers of this surname may have lived in an area known for beekeeping or honey production.
One of the earliest recorded instances of the name MIEREZ can be found in the Becerro de las Behetrías, a fourteenth-century census document from the Kingdom of Castile. This record mentions a certain Juan Mierez, who was a landowner in the town of Villanueva de Mierez, located in the present-day province of Burgos.
During the fifteenth century, the MIEREZ surname appears to have spread to other parts of Spain, particularly in the regions of Aragon and Andalusia. Historical records from this period mention individuals such as Diego Mierez de Sevilla (1420-1492), a renowned poet and scholar from Seville, and María Mierez de Zaragoza (1458-1521), a noblewoman from Zaragoza.
In the sixteenth century, the name MIEREZ gained further prominence when Hernán Mierez de Toledo (1498-1567) became a prominent conquistador and explorer in the Spanish conquest of the Americas. He is known for his involvement in the expeditions of Hernán Cortés and Francisco Pizarro, and for establishing settlements in present-day Mexico and Peru.
Another notable figure with the MIEREZ surname was Catalina Mierez de Valladolid (1532-1602), a renowned mystic and writer who was highly influential in the Catholic Reformation in Spain. Her writings on spiritual matters were widely read and admired during her lifetime and beyond.
In the seventeenth century, the MIEREZ surname continued to be found throughout Spain, with several individuals achieving distinction in various fields. One such person was Juan Mierez de Alarcón (1615-1689), a celebrated playwright and dramatist from Mexico City, whose works were influential in the development of the Spanish Golden Age theater.
As the centuries passed, the MIEREZ surname spread to other parts of the Spanish-speaking world, including Latin America and the Philippines, where it can still be found today. However, its origins and historical significance remain rooted in the medieval and early modern periods of Spanish history.
Demographics
Ancestry and ethnicity for Mierez
Among Census respondents with the surname Mierez, the largest self-reported group is Black at 61.9%. The next largest groups are Hispanic (28.6%) and White (5.7%).
The bar chart below shows how Mierez 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 Mierez surname at the time of the 2020 Census, not any inherent property of the name itself.
- Black or African American61.9% · 65
- Hispanic or Latino28.6% · 30
- White5.7% · 6
- Two or more races2.9% · 3
- Asian and Pacific Islander1.0% · 1
Timeline
Historical Census data for Mierez
Mierez 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
#152,989
National surname rank
Recorded bearers 105
-1 bearers (-0.9%)
Per 100,000 0.04
Rank movement Up 780 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2010 | #153,769 | 106 | 0.04 | First available Census row | First available Census row |
| 2020 | #152,989 | 105 | 0.04 | -1 bearers (-0.9%) | Up 780 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 Mierez 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 | #153,769 | #152,989 | 0.5% |
| Count | 106 | 105 | -0.9% |
| Per 100K | 0.04 | 0.04 | -12.2% |
Between the 2010 and 2020 Census, the number of Mierez bearers went from 106 to 105 (-0.9% change). The surname moved up 780 positions in the national ranking, going from #153,769 to #152,989.
FAQ
Mierez surname: questions and answers
How many people in the U.S. have the surname Mierez?
Name Census estimates that about 120 living Americans carry the surname Mierez. Using the current population baseline, that works out to roughly 1 in 2,856,286 residents.
How common is Mierez?
Mierez ranks #152,989 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 105 people with the surname Mierez. That is different from the site's living-bearer estimate (120), 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 Mierez.
Has Mierez become more or less common over time?
Between 2010 and 2020, the surname Mierez went from 106 recorded bearers to 105. That is a decrease of 1 (-0.9%). In the national ranking it rose from #153,769 to #152,989.
What does the Census say about the background of Mierez?
Among Census respondents with the surname Mierez, the largest self-reported group is Black at 61.9%. The next largest groups are Hispanic (28.6%) and White (5.7%). 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?
Black is the largest self-reported group for the surname Mierez in the 2020 Census, accounting for 61.9% (65 people in the source table).
What is the full ancestry breakdown?
Mierez appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are Black (61.9%), Hispanic (28.6%), White (5.7%). 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 Mierez (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 Mierez mean?
A shortened Spanish form of the patronymic surname "Ramírez". 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 Mierez (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 Mierez?
For a faster, more casual read, check HowManyOfMe.org — our sister site built around that single question.