Hoffman Island is one of two small artificial island

Artificial island

An artificial island or man-made island is an island or archipelago that has been constructed by people rather than formed by natural means...

s in the Lower New York Bay

Lower New York Bay

Lower New York Bay is that section of New York Bay south of the Narrows, the relatively narrow strait between the shores of Staten Island and Brooklyn. The southern end of the bay opens directly to the Atlantic Ocean between two spits of land, Sandy Hook, New Jersey, and Rockaway, Queens, on Long...

, off South Beach, Staten Island

South Beach, Staten Island

South Beach is the name of a neighborhood located on the East Shore of Staten Island, one of the five boroughs of New York City, USA. It is situated immediately to the south of the Staten Island side of the Verrazano Narrows Bridge...

. A smaller island, known as Swinburne Island

Swinburne Island

Swinburne Island is the smaller of two artificial islands located in the Lower New York Bay east of South Beach, Staten Island.-History:The island was created in 1860. Along with Hoffman Island, it was used to quarantine immigrants to the United States in the early 20th century who were found to be...

, lies immediately to the south.
Created from Orchard Shoals by the addition of landfill in 1872 and named for former New York City mayor (1866–1868), and then-current New York Governor (1869–1871) John Thompson Hoffman, Hoffman Island covers 11 acres (4.45 hectares), while Swinburne Island's area is about 4 acres (16,000 m²).