Find out how popular the last name Castrillo is in the United States and learn more about the meaning, history, and race and ethnic origin of people in America who are named Castrillo.

Castrillo, like all of the last names we have data for, is identified by the U.S. Census Bureau as a surname which has more than 100 occurrences in the United States in the Decennial Census survey. The most recent statistics we have for the Castrillo surname is from the 2010 census data.

Popularity of Castrillo in America

Castrillo is the 24483rd most popular name in America based on the data we have collected from the U.S. Census Bureau.

The Castrillo surname appeared 1,022 times in the 2010 census and if you were to sample 100,000 people in the United States, approximately 0 people would have the surname Castrillo.

We can also compare 2010 data for Castrillo to data from the previous census in 2000. The table below contains all of the statistics for both years in a side-by-side comparison.

The history of the last name Castrillo

The surname Castrillo is of Spanish origin, originating in the medieval era. It is derived from the Latin word "castellum," meaning "castle" or "fortified place." This suggests that the name was likely initially given to someone who lived near or was associated with a castle or fortified town.

The earliest recorded instances of the name Castrillo can be traced back to the 12th century in various regions of Spain, particularly in the northern provinces such as Castile and León. It is believed that the name initially arose as a topographic surname, describing the location or place of residence of the original bearers.

In the 13th century, the name Castrillo appeared in several historical documents, including charters and property records. One notable example is the mention of a "Pedro de Castrillo" in the cartulary of the monastery of San Salvador de Oña, dated 1236.

During the 14th and 15th centuries, the name Castrillo became more widespread throughout Spain, with various spellings such as Castriello, Castrillo, and Castrilho appearing in different regions. This period also saw the emergence of several notable individuals bearing the surname.

One of the earliest recorded instances of a prominent person with the name Castrillo is Juan de Castrillo (c. 1430-1495), a Spanish jurist and author who served as a judge in the Royal Chancery of Valladolid.

Another notable figure was Diego de Castrillo (c. 1520-1585), a Spanish soldier and explorer who participated in the conquest of Peru and later served as a governor in various regions of South America.

In the 17th century, Pedro de Castrillo (1602-1674) was a Spanish painter known for his religious works, many of which can be found in churches and museums throughout Spain.

During the 18th century, Sebastián Castrillo (1718-1793) was a prominent Spanish architect who designed several notable buildings, including the Royal Palace of Aranjuez and the Plaza Mayor in Madrid.

In more recent times, Manuel Castrillo (1918-2004) was a Spanish politician and lawyer who served as the President of the Supreme Court of Spain from 1980 to 1985.

While the surname Castrillo has its roots in medieval Spain, it has since spread to other parts of the world, particularly to Latin American countries due to Spanish colonization and migration. However, its origins can be traced back to the fortified towns and castles of northern Spain during the Middle Ages.

Race and ethnic origin of people with the last name Castrillo

We also have some data on the ancestry of people with the surname Castrillo.

The below race categories are the modified race categories used in the Census Bureau's population estimates program. All people were categorized into six mutually exclusive racial and Hispanic origin groups:

1. White only
2. Black only
3. American Indian and Alaskan Native only
4. Asian and Pacific Islander only
5. Hispanic
6. Two or More Races

For the most recent 2010 census data, the race/ethnic origin breakdown for Castrillo was:

Note: Any fields showing (S) means the data was suppressed for privacy so that the data does not in any way identify any specific individuals.

Since we have data from the previous census in 2000, we can also compare the values to see how the popularity of Castrillo has changed in the 10 years between the two census surveys.

Data source

The last name data and ethnic breakdown of last names is sourced directly from the Decennial Census survey, conducted every 10 years by the United States Census Bureau.

The history and meaning of the name Castrillo was researched and written by our team of onomatology and genealogy experts.

If you have a correction or suggestion to improve the history of Castrillo, please contact us.

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