2000
#5,719
National surname rank
Recorded bearers 5,557
First available Census row
Per 100,000 2.06
Rare Last name
Castellon
A toponymic surname indicating a person from any of the various places named Castellón in Spain.
According to the 2020 US Census Bureau surname tables, roughly 9,450 Americans carry the last name Castellon. That puts it at #4,160 in the national surname ranking, appearing at a frequency of 2.76 per 100,000 people (about 1 in 36,270 residents).
This page is the full Name Census profile for the Castellon 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
9.4K
1 in 36,270
Census rank
#4,160
2020 decennial data
Per 100,000
2.8
Frequency rate
Recorded bearers
8.2K
rare in the US
Popularity narrative
The Census Bureau recorded 8,241 bearers of the surname Castellon in its 2020 decennial surname file. At a rate of 2.76 per 100,000 residents, it holds the 4160th position in the national surname ranking.
Among Census respondents with the surname Castellon, the largest self-reported group is Hispanic at 94.0%. The next largest groups are White (5.0%) and Asian/Pacific Islander (0.4%).
Origin
Meaning and origin of Castellon
The surname Castellon originated in Spain during the medieval period. It is derived from the Spanish word "castillo," which means "castle," and is thought to have been an occupational name for someone who lived or worked in a castle.
One of the earliest recorded instances of the name Castellon can be found in the Libro de la Montería, a 14th-century manuscript describing the hunting grounds of King Alfonso XI of Castile. The name is also believed to have been associated with several small towns and villages in the regions of Valencia and Aragón, such as Castellón de la Plana and Castellón de Rugat.
In the 15th century, a prominent figure named Pedro Castellón (c. 1450-1518) served as a secretary to King Ferdinand II of Aragon and is credited with contributing to the development of Spanish orthography and grammar.
During the 16th century, a notable individual with the surname Castellon was Juan de Castellón (c. 1510-1580), a Spanish Renaissance painter known for his religious works, including altarpieces in several churches throughout Valencia.
In the 17th century, a man named Francisco Castellón (1607-1681) was a Spanish Jesuit priest and author who wrote extensively on theological and philosophical subjects.
Another historically significant bearer of the Castellon surname was José Castellón (1788-1864), a Spanish military officer and politician who fought in the Peninsular War against the French and later served as a member of the Spanish Parliament.
Throughout the centuries, the name Castellon has undergone various spelling variations, such as Castellón, Castellion, and Castelló, reflecting regional linguistic differences and evolving orthographic conventions.
Demographics
Ancestry and ethnicity for Castellon
Among Census respondents with the surname Castellon, the largest self-reported group is Hispanic at 94.0%. The next largest groups are White (5.0%) and Asian/Pacific Islander (0.4%).
The bar chart below shows how Castellon 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 Castellon surname at the time of the 2020 Census, not any inherent property of the name itself.
- Hispanic or Latino94.0% · 7,750
- White5.0% · 414
- Asian and Pacific Islander0.4% · 29
- Black or African American0.3% · 21
- Two or more races0.2% · 15
- American Indian and Alaska Native0.1% · 12
Timeline
Historical Census data for Castellon
Castellon 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
#4,421
National surname rank
Recorded bearers 8,041
+2,484 bearers (+44.7%)
Per 100,000 2.73
Rank movement Up 1,298 places
2020
#4,160
National surname rank
Recorded bearers 8,241
+200 bearers (+2.5%)
Per 100,000 2.76
Rank movement Up 261 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2000 | #5,719 | 5,557 | 2.06 | First available Census row | First available Census row |
| 2010 | #4,421 | 8,041 | 2.73 | +2,484 bearers (+44.7%) | Up 1,298 places |
| 2020 | #4,160 | 8,241 | 2.76 | +200 bearers (+2.5%) | Up 261 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 Castellon 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 | #4,421 | #4,160 | 5.9% |
| Count | 8,041 | 8,241 | 2.5% |
| Per 100K | 2.73 | 2.76 | 1.0% |
Between the 2010 and 2020 Census, the number of Castellon bearers went from 8,041 to 8,241 (+2.5% change). The surname moved up 261 positions in the national ranking, going from #4,421 to #4,160.
FAQ
Castellon surname: questions and answers
How many people in the U.S. have the surname Castellon?
Name Census estimates that about 9,450 living Americans carry the surname Castellon. Using the current population baseline, that works out to roughly 1 in 36,270 residents.
How common is Castellon?
Castellon ranks #4,160 in the 2020 Census surname tables and is classified on this site as "Rare." The Census recorded the name at a frequency of 2.76 per 100,000 residents, which is about 3 people out of every 100,000.
How many people with this surname were counted in the Census?
The raw 2020 Census file counted 8,241 people with the surname Castellon. That is different from the site's living-bearer estimate (9,450), which projects the surname's present-day count by applying the Census frequency rate to the current U.S. population.
What does 2.76 per 100,000 actually mean?
It is the Census Bureau's normalized frequency measure. A rate of 2.76 per 100,000 means that if you picked a random group of 100,000 U.S. residents, you would expect about 3 of them to have the surname Castellon.
Has Castellon become more or less common over time?
Between 2010 and 2020, the surname Castellon went from 8,041 recorded bearers to 8,241. That is an increase of 200 (+2.5%). In the national ranking it rose from #4,421 to #4,160.
What does the Census say about the background of Castellon?
Among Census respondents with the surname Castellon, the largest self-reported group is Hispanic at 94.0%. The next largest groups are White (5.0%) and Asian/Pacific Islander (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 Castellon in the 2020 Census, accounting for 94.0% (7,750 people in the source table).
What is the full ancestry breakdown?
Castellon appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are Hispanic (94.0%), White (5.0%), Asian/Pacific Islander (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 Castellon (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 Castellon mean?
A toponymic surname indicating a person from any of the various places named Castellón 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 Castellon (2.76 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 common is the surname Castellon?
You can see how many people have the surname Castellon on our sister site HowManyOfMe.org — same data roots, lighter UI.