Yarnell is a cdp located in Yavapai County, in the state of Arizona (AZ), United States. Nestled in the Mountain division of the West region, it covers an area of 8.8 square miles (23.0 km²) and sits at an elevation of 4779 ft. With a population of approximately 645 residents, Yarnell offers a peaceful, rural atmosphere.
The town's population is composed of about 53.33% males and 46.67% females, and it has a population density of 73.05 people per square mile (28.20/km²). Yarnell lies at a latitude of 34.22 and a longitude of -112.75, operating in the UTC-5.
Locals reflect a blend of American ancestry, with roots primarily in United States (17.2%), followed by English (25.7%), German (20%), and Scotch-Irish (5.1%) heritage. The town is identified by the ZIP code 85362.