563 Area Code – Davenport, Iowa: Location, Time Zone & History

The economy of northeastern Iowa's 563 area code has long centered on heavy manufacturing. The code split off from area code 319 in 2001, entering permissive dialing on March 25 and becoming mandatory on December 2 of that year, and it covers Davenport, Bettendorf, Clinton, Dubuque, Decorah, and the Iowa side of the Quad Cities. Davenport and Bettendorf sit within the Quad Cities, a bistate metro that straddles the Mississippi River alongside Illinois' Rock Island and Moline, and the region's identity is closely tied to John Deere, whose Davenport Works remains a major presence.

Further north, Dubuque County's John Deere Dubuque Works has operated since 1946 and is the county's largest employer, with about 3,000 workers building construction and forestry equipment. Manufacturing runs alongside healthcare, represented by MercyOne Dubuque Medical Center, agriculture and food processing, and Mississippi River tourism in towns such as Muscatine and Clinton.

Iowa has never adopted an area-code overlay; each of its five numbering plan areas, including 319, 515, 563, 641, and 712, covers its own distinct, non-overlapping territory, so 563 numbers remain tied to a defined geographic footprint rather than being shared across a wider region.