The city is adjacent to Port Huron Township but is administratively autonomous. Located along the St. Clair River, it is connected to Point Edward, Ontario in Canada via the Blue Water Bridge. The city lies at the southern end of Lake Huron and is the easternmost point on land in Michigan. Port Huron is noted for its regional distinctiveness. Anthropologists assume that this is due to its close proximity to Canada. As a result, many Canadian institutions and parts of Canadian culture are quite prevalent in Port Huron.
Port Huron is home to two paper mills; Mueller brass; and many businesses related to tourism and the automotive industry. The city features a historic downtown area, boardwalk, marina, museum, lighthouse, and the McMorran Place arena and entertainment complex.