Honolulu County, Hawaii in the context of "Midway Atoll"

Honolulu (/ˌhɒnəˈluːluː/ HON-ə-LOO-loo; Hawaiian: [honoˈlulu]) is the capital and most populous city of the U.S. state of Hawaii, located in the Pacific Ocean. It is the county seat of the consolidated City and County of Honolulu, situated along the southeast coast of the island of Oʻahu. The population of Honolulu was 350,964 at the 2020 census, while the Urban Honolulu metropolitan area has an estimated 1 million residents and is the 56th-largest metropolitan area in the nation.

The area's geography and Honolulu Harbor has long made it desirable as a port, accounting for the city’s growth and importance in the Hawaiian archipelago and the broader Pacific region. In 1845, Honolulu became the capital of the independent Hawaiian Kingdom, a role it maintained as Hawaii became a U.S. territory and at last a U.S. State. The city gained worldwide recognition following the Empire of Japan's attack on nearby Pearl Harbor on December 7, 1941, which prompted the entry of the U.S. into World War II; the harbor remains a major U.S. Navy base, hosting the United States Pacific Fleet, the world's largest naval command.

The Northwestern Hawaiian Islands, also known as the Leeward Hawaiian Islands, are a series of mostly uninhabited islands and atolls located northwest of Kauai and Niʻihau in the Hawaiian island chain. Politically, these islands are part of Honolulu County in the U.S. state of Hawaii, with the exception of Midway Atoll, though they are generally not included on maps and graphic depictions of the State of Hawaii. Midway Atoll is a territory distinct from the State of Hawaii, and is classified as one of the United States Minor Outlying Islands. The United States Census Bureau designates this area, excluding Midway Atoll, as Census Tract 114.98 of Honolulu County. The total land area of these islands is 3.1075 square miles (8.048 km²). With the exception of Nīhoa, all of the islands lie north of the Tropic of Cancer, making them the only islands in Hawaii situated outside the tropics.

Almost all of the islands are uninhabited, the main exception being Midway Atoll, which maintains a permanent rotating population of U.S. Fish and Wildlife Service staff and other workers. Kure Atoll and Tern Island have a seasonal population of a small team of environmental staff. At least some of the islands were visited by Ancient Hawaiians, with Nīhoa showing evidence of permanent habitation.

This is a list of the 100 most populous of the 3,144 counties in the United States based on the national decennial US census conducted on April 1, 2020, and vintage Census population estimates for July 1, 2024.

Many of the counties on the list include major cities or metropolitan areas in all parts of the United States. Seven of the listed counties have consolidated city and county government, namely the City and County of Honolulu, Metropolitan Government of Nashville and Davidson County, Tennessee, City and County of Philadelphia, City and County of San Francisco, City of Jacksonville and Duval County, Indianapolis and Marion County, and City and County of Denver. Kings County, Queens County, New York County, Bronx County, and Richmond County are coterminous with the respective boroughs of New York City; they fall under the jurisdiction of the combined Government of New York City. Independent cities are not counted.

Marine Corps Base Hawaii (MCBH), formerly Marine Corps Air Station Kaneohe Bay and originally Naval Air Station Kaneohe Bay, is a U.S. Marine Corps facility and air station located on the Mokapu Peninsula of windward O'ahu in the City & County of Honolulu. Marine Corps Base Hawaii is home to Marines, Sailors, their family members, and civilian employees. The United States Marine Corps operates a 7,800-foot (2,400 m) runway at the base.

MCBH is home for the 3rd Marine Littoral Regiment, Marine Aircraft Group 24, Combat Logistics Company 33 (CLC-33), 3rd Radio Battalion, and the Navy's Patrol and Reconnaissance Wing 2.

This is a list of census-designated places in Hawaii. There are no separately incorporated cities in the entire state; Honolulu County is both a city and county, and it is the sole entity considered by the U.S. Census Bureau as a municipality. There are 162 census-designated places as of the 2020 census.

Honolulu Harbor, also called Kulolia and Ke Awa O Kou and the Port of Honolulu, is the principal seaport of Honolulu and the State of Hawaiʻi in the United States. From the harbor, the City & County of Honolulu was developed and urbanized, in an outward fashion, over the course of the modern history of the island of Oahu. It includes Matson, Inc. harbors on Sand Island.

Kailua /kaɪˈluːə/ (Hawaiian pronunciation: [kɐjˈluwə]) is a census-designated place (CDP) in Honolulu County, Hawaii, United States. It lies in the Koʻolaupoko District of the island of Oʻahu on the windward coast at Kailua Bay. It is in the judicial district and the ahupua'a named Ko'olaupoko. It is 12 miles (19 km) northeast of Honolulu – over Nu‘uanu Pali.

In the Hawaiian language Kailua means "two seas" or "two currents", a contraction of the words kai (meaning "sea" or "sea water") and ʻelua (meaning "two"); it is so named because of the two former fishponds in the district (Kawainui and Kaʻelepulu) or the two currents that run through Kailua Bay.

Marine Corps Air Station Kaneohe Bay or MCAS Kaneohe Bay (IATA: NGF, ICAO: PHNG, FAA LID: NGF) is a United States Marine Corps (USMC) airfield located within the Marine Corps Base Hawaii complex, formerly known as Marine Corps Air Facility (MCAF) Kaneohe Bay or Naval Air Station (NAS) Kaneohe Bay. It is located two miles (3 km) northeast of the central business district of Kaneohe, in Honolulu County, Hawaii, United States. The airfield has one runway (4/22) with a 7,771 x 200 ft (2,369 x 61 m) asphalt surface.