Naval Meteorology and Oceanography Command

The National Data Buoy Center (NDBC) is a part of the National Oceanic and Atmospheric Administration's (NOAA) National Weather Service (NWS). NDBC designs, develops, operates, and maintains a network of data collecting buoys and coastal stations. The NDBC is located in southern Mississippi as a tenant at the John C. Stennis Space Center, a National Aeronautics and Space Administration (NASA) facility.

The John C. Stennis Space Center (SSC) is a NASA rocket testing facility in Hancock County, Mississippi (United States), on the banks of the Pearl River at the Mississippi–Louisiana border. As of 2012, it is NASA's largest rocket engine test facility. There are over 50 local, state, national, international, private, and public companies and agencies using SSC for their rocket testing facilities.

The Mississippi Army Ammunition Plant was a 13,480-acre (54.6 km2) government-owned, contractor-operated facility in Hancock County, Mississippi that was dedicated on March 31, 1983. Construction in the northern part of the John C. Stennis Space Center facility began on January 8, 1978. The plant was deactivated on March 4, 2009 as part of the Base Realignment and Closure, 2005. The plant was last operated by Mason Technologies, Inc., a subsidiary of Mason and Hanger-Silas Co., Inc.

Gainesville is a ghost town located in Hancock County, Mississippi. Formerly a thriving port on the Pearl River, the town experienced decline due to the emergence of railways in the mid-19th century. The land was acquired by NASA in 1962, later becoming home to the Stennis Space Center.

Napoleon is an unincorporated community located on the Pearl River in Hancock County, Mississippi, United States.A post office operated under the name Napoleon from 1847 to 1905. After the post office closed, mail was routed to the post office in Huxford.Napoleon was once home to a turpentine and camphine distillery.Much of the community was abandoned after the creation of the Stennis Space Center.

Pearl River Wildlife Management Area, also known as Pearl River WMA, is a 35,619 acres (14,414 ha) tract of protected area near Slidell in St. Tammany Parish, Louisiana, in the United States. The WMA is managed by the Louisiana Department of Wildlife and Fisheries (LDWF)

Pearlington is a census-designated place (CDP) in Hancock County, Mississippi, United States, on U.S. Route 90, along the Pearl River, at the Louisiana state line. It is part of the Gulfport–Biloxi, Mississippi Metropolitan Statistical Area. The population was 1,684 at the 2000 census. On August 29, 2005, Hurricane Katrina made landfall just south of Pearlington.

Pearl River is a town in St. Tammany Parish in the U.S. state of Louisiana. The population was 2,506 at the 2010 U.S. census, and 2,618 at the 2020 population estimates program. It is part of the New Orleans–Metairie–Kenner metropolitan statistical area.

The Haaswood Store, at 62011 Louisiana Highway 1091 in St. Tammany Parish, Louisiana, near Pearl River, Louisiana, was built in 1930. It was listed on the National Register of Historic Places in 2009.The store was in operation into the 1960s. The building is a one-and-one-half-story store at an intersection in the unincorporated community of Haaswood, Louisiana. It is built with wood frame and cast concrete blocks.

The Crosby Arboretum is located in Picayune, Mississippi, United States, and is affiliated with Mississippi State University. It contains 64 acres (259,000 m2) in its interpretive center, plus over 700 acres (2.8 km2) in seven additional natural areas, sheltering over 300 species of indigenous trees and shrubs.

Pearl River High School is a high school in Pearl River, Louisiana, United States, operated by the St. Tammany Parish School Board. In addition to Pearl River it serves a small section of Slidell.

Hancock County is the southernmost county of the U.S. state of Mississippi and is named for Founding Father John Hancock. As of the 2020 census, the population was 46,053. Its county seat is Bay St. Louis.Hancock County is part of the Gulfport–Biloxi, MS Metropolitan Statistical Area. It is situated along the Gulf of Mexico and the state line with Louisiana. The area is home to the John C. Stennis Space Center, NASA's largest rocket engine test facility. The county was severely damaged from Hurricane Katrina on August 29, 2005, which caused a huge storm surge and catastrophic damage.