2000
#8,545
National surname rank
Recorded bearers 3,549
First available Census row
Per 100,000 1.32
Rare Last name
Casares
A habitational surname referring to someone from any of the various places named Casares in Spain.
According to the 2020 US Census Bureau surname tables, roughly 4,453 Americans carry the last name Casares. That puts it at #8,161 in the national surname ranking, appearing at a frequency of 1.30 per 100,000 people (about 1 in 76,972 residents).
This page is the full Name Census profile for the Casares 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
4.5K
1 in 76,972
Census rank
#8,161
2020 decennial data
Per 100,000
1.3
Frequency rate
Recorded bearers
3.9K
rare in the US
Popularity narrative
The Census Bureau recorded 3,883 bearers of the surname Casares in its 2020 decennial surname file. At a rate of 1.30 per 100,000 residents, it holds the 8161st position in the national surname ranking.
Among Census respondents with the surname Casares, the largest self-reported group is Hispanic at 88.7%. The next largest groups are White (9.2%) and American Indian/Alaska Native (0.7%).
Origin
Meaning and origin of Casares
The surname Casares originated in Spain during the medieval period. It derives from the Spanish word "casares," which referred to stone houses or lodgings. This term is believed to have its roots in the Latin word "caSa," meaning house or dwelling.
One of the earliest recorded instances of the Casares surname can be found in the Becerro de Repartimientos, a 13th-century document detailing the distribution of lands and properties in the region of Seville, following the Christian Reconquista. Several individuals bearing the Casares surname were mentioned in this record, suggesting the name's prevalence in Andalusia during that time.
In the 14th century, the Casares surname appeared in various historical documents from the Kingdom of Aragon, indicating its presence in the eastern regions of Spain. One notable figure was Pedro Casares, a merchant and landowner who lived in Valencia during the late 1300s.
The town of Casares, located in the province of Málaga, Andalusia, likely played a role in the surname's origin and early distribution. This town, situated near the Strait of Gibraltar, was once an important stronghold during the Moorish occupation of the Iberian Peninsula.
In the 16th century, Juan de Casares, a Spanish explorer, accompanied Hernán Cortés on his expeditions to the Americas. Casares played a significant role in the conquest of Mexico and later served as a governor in the region of Guatemala.
Another prominent figure was Diego Casares, a 17th-century Spanish painter known for his religious works and portraiture. He was active in Seville during the Golden Age of Spanish art.
In the 19th century, the Casares surname gained further recognition with the birth of Joaquín Casares Sánchez (1834-1892), a renowned Spanish grammarian and lexicographer. His contributions to the study of the Spanish language were invaluable, and his works are still widely referenced today.
Throughout history, individuals bearing the Casares surname have left their mark in various fields, from exploration and conquest to art and literature. While the name's origins can be traced back to medieval Spain, its legacy spans across centuries and continents, reflecting the rich cultural heritage of the Iberian Peninsula.
Demographics
Ancestry and ethnicity for Casares
Among Census respondents with the surname Casares, the largest self-reported group is Hispanic at 88.7%. The next largest groups are White (9.2%) and American Indian/Alaska Native (0.7%).
The bar chart below shows how Casares 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 Casares surname at the time of the 2020 Census, not any inherent property of the name itself.
- Hispanic or Latino88.7% · 3,446
- White9.2% · 359
- American Indian and Alaska Native0.7% · 28
- Two or more races0.5% · 20
- Asian and Pacific Islander0.5% · 19
- Black or African American0.3% · 11
Timeline
Historical Census data for Casares
Casares 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
#7,702
National surname rank
Recorded bearers 4,309
+760 bearers (+21.4%)
Per 100,000 1.46
Rank movement Up 843 places
2020
#8,161
National surname rank
Recorded bearers 3,883
-426 bearers (-9.9%)
Per 100,000 1.30
Rank movement Down 459 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2000 | #8,545 | 3,549 | 1.32 | First available Census row | First available Census row |
| 2010 | #7,702 | 4,309 | 1.46 | +760 bearers (+21.4%) | Up 843 places |
| 2020 | #8,161 | 3,883 | 1.30 | -426 bearers (-9.9%) | Down 459 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 Casares 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 | #7,702 | #8,161 | -6.0% |
| Count | 4,309 | 3,883 | -9.9% |
| Per 100K | 1.46 | 1.30 | -11.0% |
Between the 2010 and 2020 Census, the number of Casares bearers went from 4,309 to 3,883 (-9.9% change). The surname moved down 459 positions in the national ranking, going from #7,702 to #8,161.
FAQ
Casares surname: questions and answers
How many people in the U.S. have the surname Casares?
Name Census estimates that about 4,453 living Americans carry the surname Casares. Using the current population baseline, that works out to roughly 1 in 76,972 residents.
How common is Casares?
Casares ranks #8,161 in the 2020 Census surname tables and is classified on this site as "Rare." The Census recorded the name at a frequency of 1.30 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 3,883 people with the surname Casares. That is different from the site's living-bearer estimate (4,453), which projects the surname's present-day count by applying the Census frequency rate to the current U.S. population.
What does 1.3 per 100,000 actually mean?
It is the Census Bureau's normalized frequency measure. A rate of 1.30 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 Casares.
Has Casares become more or less common over time?
Between 2010 and 2020, the surname Casares went from 4,309 recorded bearers to 3,883. That is a decrease of 426 (-9.9%). In the national ranking it fell from #7,702 to #8,161.
What does the Census say about the background of Casares?
Among Census respondents with the surname Casares, the largest self-reported group is Hispanic at 88.7%. The next largest groups are White (9.2%) and American Indian/Alaska Native (0.7%). 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?
Hispanic is the largest self-reported group for the surname Casares in the 2020 Census, accounting for 88.7% (3,446 people in the source table).
What is the full ancestry breakdown?
Casares appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are Hispanic (88.7%), White (9.2%), American Indian/Alaska Native (0.7%). 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 Casares (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 Casares mean?
A habitational surname referring to someone from any of the various places named Casares 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 Casares (1.30 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 Casares?
HowManyOfMe.org, our sister site, answers that with the living-bearer count in one glance.