Castro Surname Popularity in the United States

In this article we'll look at the surname Castro and how popular it is in the United States. We'll also look at the race and ethnic origin of people in the United States who are named Castro.

Castro, like all of the 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 Castro surname is from the 2010 census data.

Where Does Castro Rank in the Most Common U.S. Names?

According to the data, Castro is ranked #138 in terms of the most common surnames in America.

The Castro surname appeared 184,134 times in the 2010 census and if you were to sample 100,000 people in the United States, approximately 62.42 would have the surname Castro.

We can also compare 2010 data for Castro 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.

2010 2000 Change (%)
Rank 138 194 -33.73%
Count 184,134 133,254 32.06%
Proportion per 100k 62.42 49.40 23.29%

Race and Ethnic Origin of People with the Last Name Castro

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

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: "White only", "Black only", "American Indian and Alaskan Native only", "Asian and Pacific Islander only", "Two or More Races", and "Hispanic".

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

  • 7.29%, or 13,423 total occurrences, were "Non-Hispanic White Only".
  • 0.66%, or 1,215 total occurrences, were "Non-Hispanic Black Only".
  • 3.74%, or 6,887 total occurrences, were "Non-Hispanic Asian and Pacific Islander Only".
  • 0.24%, or 442 total occurrences, were "Non-Hispanic American Indian and Alaskan Native".
  • 0.64%, or 1,178 total occurrences, were "Non-Hispanic of Two or More Races".
  • 87.42%, or 160,970 total occurrences, were "Hispanic Origin".

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 Castro has changed in the 10 years between the two census surveys.

2010 2000 Change (%)
White 7.29% 8.72% -17.86%
Black 0.66% 0.66% 0.00%
Asian and Pacific Islander 3.74% 3.83% -2.38%
American Indian and Alaskan Native 0.24% 0.30% -22.22%
Two or More Races 0.64% 0.97% -40.99%
Hispanic 87.42% 85.52% 2.20%

Data Source(s)

All of the data on this page is sourced from the Decennial Census survey, from the United States Census Bureau.

Link To or Reference This Page

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  • "Castro Surname Popularity in the United States". NameCensus.com. Accessed on December 1, 2021. http://namecensus.com/last-names/castro-surname-popularity/.

  • "Castro Surname Popularity in the United States". NameCensus.com, http://namecensus.com/last-names/castro-surname-popularity/. Accessed 1 December, 2021

  • Castro Surname Popularity in the United States. NameCensus.com. Retrieved from http://namecensus.com/last-names/castro-surname-popularity/.