The area was originally inhabited by Native American tribes, including the Ute people, who utilized the valley’s resources for hunting and gathering. European settlers began arriving in the mid-19th century, drawn by the promise of fertile land and the potential for mining.

In the late 1800s, Pleasant Valley saw an influx of settlers due to the Homestead Act, which offered land to those willing to develop it. The Arkansas River played a crucial role in the valley’s development, providing water for agriculture and serving as a transportation route.

Agriculture became a cornerstone of the local economy, with early settlers growing crops like wheat, barley, and alfalfa. The valley’s fertile soil and favorable climate made it an ideal location for farming. Additionally, the discovery of minerals in the nearby mountains spurred mining activities, further boosting the local economy.

In the 20th century, Pleasant Valley evolved with the times. The construction of roads and railways improved connectivity, making it easier for goods and people to move in and out of the valley. Today, Pleasant Valley is known for its scenic beauty and outdoor recreational opportunities, attracting tourists and outdoor enthusiasts.