Parker was founded in 1908; and incorporated in 1948. In May 1982, an initiative petition with enough signatures was turned in to put on the November ballot whether or not a new county should be formed.

The voters approved forming the 15th county in Arizona and it's birthday, or day of inception, was January 1, 1983. The county seat decision came on the November ballot, by initiative petition. Voters formed La Paz County from the northern portion of the former Yuma County. On January 1, 1983, Parker became the county seat for La Paz County.

Steeped in tradition, the Parker area includes the small Town of Earp and is named after the infamous Wyatt Earp. Earp resided and operated business ventures in the area for many years.

ich mining deposits also added to the areas early economy along with historic river crossing ferries that transported goods throughout the west. Originally founded as a transportation hub and Tribal Reservation, Parker is centrally located to most major western cities and remains a major center for rail transportation.

A large part of the areas community sits within the boundaries of the Colorado River Indian Tribes, (CRIT), which has the unique distinction of representing four tribal entities, the Mohave, Chemehuevi, Navajo and Hopi.