Reported (319) XXX-XXXX phone numbers lookup

Area Code 319 History and Coverage

Assigned in 1947, along with 515 and 712, Area Code 319 was one of the first three North American Numbering Plan codes assigned for Iowa. Its original boundaries were extensive in eastern Iowa, characteristic of the extensive geographic assignment that prevailed when the national number system was implemented.

Growing demand for telephone numbers later led to a geographic division. In 2001, the northern and eastern part of the 319 territory became area code 563 through a split. The new code took in much of the upper Mississippi River corridor, including the Davenport and Dubuque regions, while 319 remained in place across a more central and southeastern section of the state.

A later numbering change added 564 as an overlay for the 319 territory. Unlike the earlier split, the overlay did not move any communities from one geographic code to another; 564 and 319 cover the same service area. This preserved the established 319 boundary while providing additional numbering capacity. The post-split 319 region follows a broad path through the Cedar Valley and Iowa River basin toward Iowa’s southeastern Mississippi River counties.