Main city: Postville
Timezone: Central
Phone type: Landline
Operator: Centurytel Of Postville DBA Centurylink

Postville, a city in Allamakee and Clayton Counties in the U.S. state of Iowa. It lies near the junction of four counties and at the intersection of U.S. Routes 18 and 52 and Iowa Highway 51, with airport facilities in the neighboring communities of Waukon, Decorah, Monona, and Prairie du Chien. The population was 2,227 at the 2010 census, down from 2,273 The city is located in the southwestern corner of Allamakee County and the northwestern corner of Clayton County in a quad county or four corner region where four counties meet in the same spot. Winneshiek County is just to the west, and Fayette County is located just to the southwest of Postville. ^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