2000
#7,826
National surname rank
Recorded bearers 3,921
First available Census row
Per 100,000 1.45
Rare Last name
Castrejon
Derived from a place name referring to a small castle or fortress in Spain.
According to the 2020 US Census Bureau surname tables, roughly 6,519 Americans carry the last name Castrejon. That puts it at #5,858 in the national surname ranking, appearing at a frequency of 1.90 per 100,000 people (about 1 in 52,578 residents).
This page is the full Name Census profile for the Castrejon 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
6.5K
1 in 52,578
Census rank
#5,858
2020 decennial data
Per 100,000
1.9
Frequency rate
Recorded bearers
5.7K
rare in the US
Popularity narrative
The Census Bureau recorded 5,685 bearers of the surname Castrejon in its 2020 decennial surname file. At a rate of 1.90 per 100,000 residents, it holds the 5858th position in the national surname ranking.
Among Census respondents with the surname Castrejon, the largest self-reported group is Hispanic at 96.8%. The next largest groups are White (2.4%) and Asian/Pacific Islander (0.3%).
Origin
Meaning and origin of Castrejon
The surname Castrejon has its origins in Spain, dating back to the Middle Ages. It is believed to have originated from the Spanish word "castrejón," which refers to a small castle or fortified structure.
The name is likely derived from the Latin word "castrum," meaning a fortified place or military camp. This suggests that the earliest bearers of the Castrejon surname may have been associated with a particular castle or fortification, either residing there or serving as guards or soldiers.
During the Reconquista, the period of Christian reconquest of the Iberian Peninsula from the Moors, many new surnames emerged to identify individuals and families. Castrejon may have been adopted as a surname during this time, particularly in regions where there were significant military campaigns or the establishment of new settlements and fortifications.
One of the earliest recorded instances of the Castrejon surname can be found in the "Becerro de Behetrías," a medieval census document from the 14th century that listed the noble families and landowners in the regions of Castile and León.
In the 15th century, Juan Castrejon, a Spanish soldier and explorer, was among the first Europeans to set foot in the Caribbean Islands. He accompanied Christopher Columbus on his second voyage to the New World in 1493 and participated in the colonization efforts in the region.
Another notable figure with the Castrejon surname was Pedro Castrejon, a 16th-century Spanish priest and scholar. He was born in Valladolid in 1530 and became a renowned theologian and author, publishing several works on religious and philosophical topics.
In the 17th century, Diego Castrejon was a prominent Spanish painter known for his religious artworks and portraits. He was born in Seville in 1609 and received commissions from churches and wealthy patrons throughout Andalusia.
During the 18th century, José Castrejon was a Spanish military officer and colonial administrator who served as the governor of Puerto Rico from 1784 to 1789. He was responsible for overseeing the island's defenses and played a role in the development of San Juan's fortifications.
In the 19th century, Manuel Castrejon was a Mexican lawyer and politician who served as the governor of the state of Aguascalientes from 1859 to 1863. He was a prominent figure during the turbulent period of the Reform War and the French Intervention in Mexico.
Demographics
Ancestry and ethnicity for Castrejon
Among Census respondents with the surname Castrejon, the largest self-reported group is Hispanic at 96.8%. The next largest groups are White (2.4%) and Asian/Pacific Islander (0.3%).
The bar chart below shows how Castrejon 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 Castrejon surname at the time of the 2020 Census, not any inherent property of the name itself.
- Hispanic or Latino96.8% · 5,505
- White2.4% · 139
- Asian and Pacific Islander0.3% · 15
- American Indian and Alaska Native0.2% · 11
- Two or more races0.2% · 9
- Black or African American0.1% · 6
Timeline
Historical Census data for Castrejon
Castrejon 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
#5,624
National surname rank
Recorded bearers 6,180
+2,259 bearers (+57.6%)
Per 100,000 2.10
Rank movement Up 2,202 places
2020
#5,858
National surname rank
Recorded bearers 5,685
-495 bearers (-8.0%)
Per 100,000 1.90
Rank movement Down 234 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2000 | #7,826 | 3,921 | 1.45 | First available Census row | First available Census row |
| 2010 | #5,624 | 6,180 | 2.10 | +2,259 bearers (+57.6%) | Up 2,202 places |
| 2020 | #5,858 | 5,685 | 1.90 | -495 bearers (-8.0%) | Down 234 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 Castrejon 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 | #5,624 | #5,858 | -4.2% |
| Count | 6,180 | 5,685 | -8.0% |
| Per 100K | 2.10 | 1.90 | -9.4% |
Between the 2010 and 2020 Census, the number of Castrejon bearers went from 6,180 to 5,685 (-8.0% change). The surname moved down 234 positions in the national ranking, going from #5,624 to #5,858.
FAQ
Castrejon surname: questions and answers
How many people in the U.S. have the surname Castrejon?
Name Census estimates that about 6,519 living Americans carry the surname Castrejon. Using the current population baseline, that works out to roughly 1 in 52,578 residents.
How common is Castrejon?
Castrejon ranks #5,858 in the 2020 Census surname tables and is classified on this site as "Rare." The Census recorded the name at a frequency of 1.90 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 5,685 people with the surname Castrejon. That is different from the site's living-bearer estimate (6,519), which projects the surname's present-day count by applying the Census frequency rate to the current U.S. population.
What does 1.9 per 100,000 actually mean?
It is the Census Bureau's normalized frequency measure. A rate of 1.90 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 Castrejon.
Has Castrejon become more or less common over time?
Between 2010 and 2020, the surname Castrejon went from 6,180 recorded bearers to 5,685. That is a decrease of 495 (-8.0%). In the national ranking it fell from #5,624 to #5,858.
What does the Census say about the background of Castrejon?
Among Census respondents with the surname Castrejon, the largest self-reported group is Hispanic at 96.8%. The next largest groups are White (2.4%) and Asian/Pacific Islander (0.3%). 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 Castrejon in the 2020 Census, accounting for 96.8% (5,505 people in the source table).
What is the full ancestry breakdown?
Castrejon appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are Hispanic (96.8%), White (2.4%), Asian/Pacific Islander (0.3%). 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 Castrejon (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 Castrejon mean?
Derived from a place name referring to a small castle or fortress 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 Castrejon (1.90 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 Castrejon?
See how many people are called Castrejon on HowManyOfMe.org, our sister site built around that single question.