Broderick County, Kansas Territory

It was named for David C. Broderick, a California senator.

[1] In July 1858, gold was discovered along the South Platte River in Arapahoe County of the Territory of Kansas (now in the State of Colorado).

This discovery precipitating the Pike's Peak Gold Rush.

Following the Republican Party election victories in 1860, the United States Congress admitted Kansas to the Union.

[2] The Kansas Act of Admission excluded the portion of the Kansas Territory west of the 25th meridian west from Washington from the new state, and Broderick County and the rest of this region reverted to unorganized territory.

A map of Kansas Territory in 1860. Broderick County was located in the territory's western panhandle, surrounded by Fremont , El Paso , Oro , and Peketon Counties .