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Port Huron Charter Township is a charter township of St. Clair County in the U.S. state of Michigan. The population was 10,654 at the 2010 Census. The city of Port Huron is adjacent to the township.

WNFA (88.3 FM) is a Christian teaching/worship radio station in Port Huron, Michigan, United States, branded as "Bluewater Christian Hit Radio". WNFA broadcasts with 1,300 watts. WNFA formerly featured programming from the WAY-FM Network (formerly the Christian Hit Radio Satellite Network) until national distribution of WAY-FM programming (except for "The Wally Show" mornings) to non-owned stations ceased on July 1, 2013. After a weekend of stunting with construction sounds, a revamped Power 88.3 debuted with a new local lineup. The Wally Show continues to air in morning drive. WNFA is also the former flagship station of the Christian teaching and inspirational music format "Wonderful News Radio," which now airs solely on sister station WNFR 90.7 FM. On June 22, 2022, at 9 a.m., WNFA changed their format from contemporary Christian to Christian teaching and worship, branded as "Thrive Radio".

WHLS (1450 AM) is an alternative rock radio station licensed to Port Huron, Michigan, with a power output of 1,000 watts, covering much of St. Clair County, Michigan. It is the oldest continuously operating radio station serving St. Clair County. The station is owned by Radio First and broadcasts from studios on Huron Avenue in Downtown Port Huron. Its programming is also simulcasted on FM Translator W288BT, licensed to St. Clair, Michigan at 105.5 MHz, with an effective radiated power of 49 watts. The station currently broadcasts an alternative format branded as Port Huron's Alternative - Rock 105.5. Between 2000 and 2019, WHLS simulcasted its programming on sister station WHLX in Marine City, Michigan. That station is now known as 92.7 WHLX The Hills and has an Americana format. Until July 2020, WHLS competed with CHKS-FM 106.3 MHz in Sarnia, Ontario. The station flipped to Classic Hits, leaving WHLS as the standalone active rock station in the market.

WSAQ (107.1 FM) is a country music radio station licensed to Port Huron, Michigan, with an effective radiated power of 6,000 watts. WSAQ covers St. Clair County, Michigan and Lambton County, Ontario as well as portions of Macomb, Lapeer, and Sanilac counties. The station is owned by Radio First and broadcasts from studios on Huron Avenue in Downtown Port Huron.

Kimball Township is a civil township of St. Clair County in the U.S. state of Michigan. As of the 2010 census, the township population was 9,358.

Fort Gratiot Township ( GRASH-it) is a charter township of St. Clair County in the U.S. state of Michigan. The population was 11,108 at the 2010 Census. It is named for Fort Gratiot, an American fort located there off and on between 1814 and 1879.

Memorial Recreation Park is an athletic and recreation complex in Port Huron, Michigan. The main facility of the complex is a 5,500-seat stadium, home to the Port Huron Northern High School and Port Huron High School football teams. In addition, there are in the 27-acre (11 ha) complex tennis courts, four baseball fields, four softball fields, several football fields, and a quarter-mile track. The complex was built in 1945 and is dedicated to the men and women of Port Huron who served in World War II.

St. Clair County International Airport (IATA: PHN, ICAO: KPHN, FAA LID: PHN) is a public airport owned by the government of St. Clair County, Michigan, United States. It is located in Kimball Township, five miles (8 km) southwest of the central business district (CBD) of Port Huron. It is included in the Federal Aviation Administration (FAA) National Plan of Integrated Airport Systems for 2017–2021, in which it is categorized as a regional reliever airport facility.

Port Huron station is an Amtrak station in Port Huron, Michigan, and the eastern terminus of the Blue Water. The current station opened in 1979. It sits six blocks west of the St. Clair Tunnel, but the passenger tracks now terminate here and only freight tracks bypass the station and continue to Canada. Port Huron is the division point between the Flint Subdivision to Battle Creek, Michigan, and the Strathroy Subdivision to London, Ontario. The station was formerly served by the International Limited, which was operated jointly by Via Rail and Amtrak between Chicago and Toronto. The service, which had started in 1982, was discontinued in 2004. The Port Huron station had contained a United States Immigration Office while it served the International Limited.

Marysville is a city in St. Clair County of the U.S. state of Michigan. The population was 9,959 at the 2010 census. The municipality was founded in 1919, first as a village, then became a city in 1924. Marysville is located on the western shore of the St. Clair River, across from Corunna, Ontario. The city is marked by winding streets, subdivisions, a riverfront boardwalk, Bridge-to-Bay Bike Trail and an industrial park. The city was home to the former Wills Sainte Claire Automotive company, a Morton Salt plant, and the Detroit Edison Marysville Power Plant which was decommissioned in 2001 and razed in 2015.

Port Huron is a city in the U.S. state of Michigan and the county seat of St. Clair County. The population was 28,983 at the 2020 census. The city is bordered on the west by Port Huron Township, but the two are administered autonomously. Port Huron is located along the source of the St. Clair River at the southern end of Lake Huron. The city is along the Canada–United States border and directly across the river from Sarnia, Ontario. The two cities are connected by the Blue Water Bridge at the eastern terminus of Interstate 94. Port Huron has the easternmost point of land in the state of Michigan and is also one of the northernmost areas included in the Detroit–Warren–Dearborn Metropolitan Statistical Area (Metro Detroit).

The Port Huron Fire of October 8, 1871 (one of a series of fires known collectively as the Great Fire of 1871 or the Great Michigan Fire) burned a number of cities including White Rock and Port Huron, and much of the countryside in the "Thumb" region of the U.S. state of Michigan (a total of 1.2 million acres, or 4,850 km²). On the same day, other fires burned the cities of Holland and Manistee, Michigan, as well as broad swaths of forest in various areas of the state; the Great Chicago Fire and the Peshtigo Fire also occurred on the same day. At least 50 people died as a result of the Port Huron Fire, and at least 200 from all the fires in the state.