The company has offices in Trenton, Portland Island and Pike Creek, Shoreside Vale, with their headquarters located in Torrington, Staunton Island. An AMCo. filling station can also be found in Harwood. The sign on the AmCo. filling station features the names of what can be presumed as several business partners of the company.
- During the development of Grand Theft Auto III, the AM sign at the gas station originally said AMCo.
- As seen in Grand Theft Auto: Liberty City Stories, the walls at the gas station are made of brick. In Grand Theft Auto III, the walls appear to be made of concrete.