Main city: Dorchester
Timezone: Central
Phone type: Landline
Operator: Ace Telephone Association - Iowa

Dorchester, an unincorporated community in northwestern Allamakee County, Iowa, United States. It lies along local roads just off Iowa Highway 76, north of the city of Waukon, the county seat of Allamakee County. Its elevation is 738 feet (225 m). The town was originally settled by Harvey Bell and Edmund Bell, and was named after Dorchester, England. Although Dorchester is unincorporated, it has a post office, with the ZIP code of 52140, which opened on 21 May 1857. Dorchester is located in the Waterloo Township. Dorchester was platted in 1873. ^source

Area code 563 is a telephone area code for the east central and northeast corner of the state of Iowa, and includes most of the Iowa side of the Quad Cities. The 563 area code was split off from the Area code 319 in 2001, becoming active on March 25, 2001, and finally becoming mandatory on December 2, 2001. ^source