Amherst is a census-designated place (CDP) and a post office located in Phillips County, Colorado, United States. As of the United States Census 2020, the population of the Amherst CDP was 47.
The town of Amherst was established about 1887. The community was named after Amherst, Massachusetts, the native home of a local businessman.
The Amherst Post Office opened on February 18, 1888. Currently, it's ZIP Code is 80721.
Phillips County was founded in 1889, and before that, Amherst was in Weld County.
The Amherst CDP has an area of , all land.
The United States Census Bureau initially defined the for the