The New York Field Office is responsible for the law enforcement functions at the Brooklyn, Queens and Staten Island Units of Gateway National Recreation Area (GNRA) as well as at the Statue of Liberty / Ellis Island  National Historic Site.  Headquartered on Floyd Bennett Field in Brooklyn, New York, the U.S. Park Police has served at GNRA since its inception in 1974.

Fort Wadsworth National Historic Site on Staten Island became part of GNRA in 1994. The site also houses the several Military and DOD agencies. There is a large military housing area that is patrolled jointly with the U.S. Coast Guard Police. The Force assumed the responsibility for providing law enforcement services to the Statue of Liberty and Ellis Island National Historic Sites, with their millions of visitors each year, in 1995. Patrol Operations are divided with the Brooklyn-Queens District located on Floyd Bennett Field in Brooklyn and the Staten Island-Manhattan District office in Fort Wadsworth. There are Stations in Brooklyn, Staten Island, and Ellis Island, The officers use widely diversified methods to patrol these areas including cruisers, horses, boats, motorcycles, and bicycles. Riis Park in Rockaway, Queens and Great Kills Park in Staten Island are two heavily visited major beaches located within GNRA. The Horse Mounted Unit provides patrol coverage in both the Staten Island Unit and Brooklyn-Queens District. Horse mounted patrols are also utilized for festivals and special events. The unit marches in many local parades, as well as New York City's Saint Patrick's Day Parade.The Criminal Investigations Unit investigates many different types of incidents and includes the Street Crimes Unit, which patrol in "old clothes" in our parks.The Special Weapons and Tactics (SWAT) Team is composed of officers and supervisors, with specialized training, ready to respond to any type of incident. Officers in the New York Field Office are very active in community relations efforts, participating in events such as Officer Child Find, and the National Night Out.