Idaho

Idaho was a United States state with a population of 1,780,000 before the apocalypse. After its social and economic collapse in 2021, Idaho was commonly referred to as the 'Spring State' though it is unknown why. As of 2032, Idaho holds one of the biggest survivor-run safe-zones in the United States; Carcabridge.

Post-apocalypse
Idaho did not see its first case of the zombie virus until around May-June 2021 and did not see a widespread outbreak of the virus until mid September. It is unknown how many Idahoans died during the initial outbreak.

At the time of the outbreak in September, Idaho saw much of its city populous perish or escape further into Idaho. Those who lived outside of the cities were not immediately affected and did not personally see the virus until around October 2021 where the undead from the cities starting moving to rural lands. As mentioned with residents of Carcabridge, the big cities of Idaho; such as Boise, Pocatello and Idaho Falls fell relatively quickly and survivors from the cities were commonly accepted as refugees from rural landowners. Native American tribes also accepted some refugees; though these refugees did not stay with the Natives past 2021.

Carcabridge was founded sometime in late 2021-mid 2022 with an initial population of ~6,000; hinting that much of the state's population died in the cities. Around 2,000 newcomers arrived during 2022-2027, with people coming from as far away as New Hampshire. There is hinted to be at least five other survivor-run cities across Idaho that is in communication with Carcabridge, though the population and location of these bases remain unknown.

In December 2032 (at the time of S5), Idaho saw its harshest winter since The Great Blizzard in 2021; much of the native animal and plant life died and a rather large number of reanimated undead became trapped under ice/snow sheets. These trapped undead were commonly nicknamed 'Frosbies ' due to their inability to move any muscle but their eyes. This harsh winter helped clear much of Idaho's undead population.