Area Code Atlas

NPA 975 overlay on 816 announced

New NPA 975 to Overlay NPA 816 (Missouri)

NPA 975 Overlay of NPA 816 Implementation Date Change (Missouri)

NPA 975 overlay of 816 implemented

Area code 975 was implemented as an overlay to area code 816 on May 5, 2002, after initial plans and postponements. This created an overlay complex serving the same geographic area in northwestern Missouri.

NPA 975 overlay on 816 announced

NPA 975 to Overlay NPA 816 (Missouri)

NPA 975 overlay on 816 announced

NPA 975 to Overlay NPA 816 (Missouri) – supersedes PL-568

NPA 975 overlay activated for 816

Area code 975 was activated as an overlay for area code 816 on October 13, 2023, to address projected central office code exhaustion, with ten-digit dialing already in place.