Arnold is located in Custer County off of Hwy 92, northeast of North Platte between Tryon and Merna, near South Loop River.
The population estimate for July 1, 1998 was 688, an increase of 9 since 1990.
Arnold was established by one man, Richard Allen.
This agricultural-based community offers its residents business and professional services, recreation and entertainment, and state-of-the-art educational opportunities.