About the surname
It is a prevailing family identifier; Castro easily makes the cut for the top 1,000 last names in the US. A deeper dive into the numbers reveals that 187,649 US residents currently share this name. This solid population count is comparable to the headcount of a thriving mid-sized metropolitan area. If you were to sample the US population, approximately one individual out of every 1,775 would hold the Castro surname. There is virtually no ethnic parity here; the Hispanic or Latino demographic completely overshadows the White group by a massive 80% margin.