2000
#123,314
National surname rank
Recorded bearers 129
First available Census row
Per 100,000 0.05
Very Rare Last name
Castoria
A toponymic surname derived from the name of the town Castoria, located in northwestern Greece.
According to the 2020 US Census Bureau surname tables, roughly 122 Americans carry the last name Castoria. That puts it at #152,339 in the national surname ranking, appearing at a frequency of 0.04 per 100,000 people (about 1 in 2,809,462 residents).
This page is the full Name Census profile for the Castoria 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
122
1 in 2,809,462
Census rank
#152,339
2020 decennial data
Per 100,000
0.0
Frequency rate
Recorded bearers
106
very rare in the US
Popularity narrative
The Census Bureau recorded 106 bearers of the surname Castoria in its 2020 decennial surname file. At a rate of 0.04 per 100,000 residents, it holds the 152339th position in the national surname ranking.
Among Census respondents with the surname Castoria, the largest self-reported group is White at 91.5%. The next largest groups are Hispanic (7.5%) and Two or More Races (0.9%).
Origin
Meaning and origin of Castoria
The surname Castoria has its origins in Italy, dating back to the late Middle Ages. It is believed to have derived from the Italian word "castoro," which means "beaver." This suggests that the name may have initially referred to a person who either worked with beavers or lived near a beaver colony.
One of the earliest recorded instances of the name Castoria can be found in a 14th-century document from the region of Tuscany, where a certain Gianni Castoria was mentioned as a landowner. This suggests that the name had already gained some prominence by that time.
In the 15th century, the name appears in records from the city of Florence, where a family named Castoria were noted as successful merchants and bankers. This family likely played a role in the spread of the name throughout Italy and beyond.
During the Renaissance period, a notable individual bearing the name Castoria was Giulio Castoria, a renowned painter and sculptor born in Rome in 1492. His works can still be found in various churches and museums across Italy.
Another prominent figure with the surname Castoria was Pietro Castoria, a 16th-century architect and engineer from Venice. He was responsible for designing several iconic buildings in the city, including the Palazzo Castoria, which still stands today.
As the name spread beyond Italy, it also gained a foothold in other parts of Europe. In the 17th century, a French nobleman named Jacques de Castoria was known for his military exploits during the Thirty Years' War.
In the 18th century, the name Castoria appeared in the records of the Spanish Inquisition, where a certain Juan Castoria was mentioned as a victim of religious persecution.
One of the more recent notable individuals with the surname Castoria was Maria Castoria, an Italian opera singer born in Naples in 1856. She performed in some of the most prestigious opera houses across Europe and was highly acclaimed for her powerful soprano voice.
Throughout its history, the surname Castoria has been associated with various professions and social classes, from artists and architects to merchants and landowners. Its origins can be traced back to the rich cultural heritage of Italy, where it first emerged and gained prominence.
Demographics
Ancestry and ethnicity for Castoria
Among Census respondents with the surname Castoria, the largest self-reported group is White at 91.5%. The next largest groups are Hispanic (7.5%) and Two or More Races (0.9%).
The bar chart below shows how Castoria 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 Castoria surname at the time of the 2020 Census, not any inherent property of the name itself.
- White91.5% · 97
- Hispanic or Latino7.5% · 8
- Two or more races0.9% · 1
Timeline
Historical Census data for Castoria
Castoria 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
#142,108
National surname rank
Recorded bearers 117
-12 bearers (-9.3%)
Per 100,000 0.04
Rank movement Down 18,794 places
2020
#152,339
National surname rank
Recorded bearers 106
-11 bearers (-9.4%)
Per 100,000 0.04
Rank movement Down 10,231 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2000 | #123,314 | 129 | 0.05 | First available Census row | First available Census row |
| 2010 | #142,108 | 117 | 0.04 | -12 bearers (-9.3%) | Down 18,794 places |
| 2020 | #152,339 | 106 | 0.04 | -11 bearers (-9.4%) | Down 10,231 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 Castoria 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 | #142,108 | #152,339 | -7.2% |
| Count | 117 | 106 | -9.4% |
| Per 100K | 0.04 | 0.04 | -11.3% |
Between the 2010 and 2020 Census, the number of Castoria bearers went from 117 to 106 (-9.4% change). The surname moved down 10,231 positions in the national ranking, going from #142,108 to #152,339.
FAQ
Castoria surname: questions and answers
How many people in the U.S. have the surname Castoria?
Name Census estimates that about 122 living Americans carry the surname Castoria. Using the current population baseline, that works out to roughly 1 in 2,809,462 residents.
How common is Castoria?
Castoria ranks #152,339 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 106 people with the surname Castoria. That is different from the site's living-bearer estimate (122), 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 Castoria.
Has Castoria become more or less common over time?
Between 2010 and 2020, the surname Castoria went from 117 recorded bearers to 106. That is a decrease of 11 (-9.4%). In the national ranking it fell from #142,108 to #152,339.
What does the Census say about the background of Castoria?
Among Census respondents with the surname Castoria, the largest self-reported group is White at 91.5%. The next largest groups are Hispanic (7.5%) and Two or More Races (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?
White is the largest self-reported group for the surname Castoria in the 2020 Census, accounting for 91.5% (97 people in the source table).
What is the full ancestry breakdown?
Castoria appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are White (91.5%), Hispanic (7.5%), Two or More Races (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 Castoria (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 Castoria mean?
A toponymic surname derived from the name of the town Castoria, located in northwestern Greece. 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 Castoria (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 have the surname Castoria?
HowManyOfMe.org, our sister site, answers that with the living-bearer count in one glance.