| Official Name: | San Castle, Florida |
| Settlement Type: | CDP |
| Pushpin Map: | Florida |
| Subdivision Type: | Country |
| Subdivision Name: |  United States |
| Subdivision Type1: | State |
| Subdivision Type2: | County |
| Subdivision Name2: | Palm Beach |
| Unit Pref: | Imperial |
| Area Footnotes: | [1] |
| Area Total Km2: | 1.09 |
| Area Land Km2: | 1.09 |
| Area Water Km2: | 0.00 |
| Area Total Sq Mi: | 0.42 |
| Area Land Sq Mi: | 0.42 |
| Area Water Sq Mi: | 0.00 |
| Population As Of: | 2020 |
| Population Total: | 3755 |
| Population Density Km2: | 3454.71 |
| Population Density Sq Mi: | 8940.48 |
| Timezone: | Eastern (EST) |
| Utc Offset: | -5 |
| Timezone Dst: | EDT |
| Utc Offset Dst: | -4 |
| Elevation Ft: | 23 |
| Coordinates: | 26.565°N -80.0611°W |
| Area Code: | 561, 728 |
| Blank Name: | GNIS feature ID |
| Blank Info: | 2628532 |
San Castle is a census-designated place (CDP) in Palm Beach County, Florida, United States. It is part of the Miami metropolitan area of South Florida. The population was 3,755 as of the 2020 census.
San Castle is located at 26.565°N -80.0611°W and is between Interstate 95 and the Intracoastal Waterway; it borders Lantana to the south, Hypoluxo to the west and Boynton Beach to the northeast.[2]
| White (NH) | 776 | 20.67% | |
| Black or African American (NH) | 1,456 | 38.77% | |
| Native American or Alaska Native (NH) | 1 | 0.03% | |
| Asian (NH) | 25 | 0.67% | |
| Pacific Islander or Native Hawaiian (NH) | 0 | 0.00% | |
| Some Other Race (NH) | 14 | 0.37% | |
| Mixed/Multiracial (NH) | 107 | 2.85% | |
| Hispanic or Latino (any race) | 1,376 | 36.64% | |
| Total | 3,755 | 100.00% |
As of the 2020 United States census, there were 3,755 people, 1,160 households, and 797 families residing in the CDP.[4]
| White (NH) | 874 | 25.50% |
| Black or African American (NH) | 1,292 | 37.69% |
| Native American or Alaska Native (NH) | 17 | 0.50% |
| Asian (NH) | 21 | 0.61% |
| Pacific Islander or Native Hawaiian (NH) | 0 | 0.00% |
| Some Other Race (NH) | 17 | 0.50% |
| Mixed/Multiracial (NH) | 73 | 2.13% |
| Hispanic or Latino (any race) | 1,134 | 33.08% |
| Total | 3,428 |
As of the 2010 United States census, there were 3,428 people, 880 households, and 672 families residing in the CDP.[6]
In 2015, the median household income of the 1,078 households in San Castle, FL grew to $49,107 from the previous year's value of $42,869.[7]
In 2016, the most common first languages spoken in San Castle are English at 50.4%, Haitian (French) Creole at 31%, Spanish at 18.3%, and Chinese at 0.3%. And as of 2016, US citizens accounted for 77.7% of the population.
Despite its small size, the CDP has been notable for being home to the San Castle Soldiers, a set of the greater Top 6 gang; who was featured on the show Gangland, on the History Channel. The gang is notorious for being involved in the Christmas Eve shooting at the Boynton Beach Mall, which resulted in a death.[8] The gang was also involved in several other homicides.[9]