Mcarthur is a cdp located in Shasta County, in the state of California (CA), United States. Nestled in the Pacific division of the West region, it covers an area of 1.0 square miles (3.0 km²) and sits at an elevation of 3311 ft. With a population of approximately 365 residents, Mcarthur offers a peaceful, rural atmosphere.
The town's population is composed of about 52.88% males and 47.12% females, and it has a population density of 361.39 people per square mile (139.53/km²). Mcarthur lies at a latitude of 41.05 and a longitude of -121.4, operating in the UTC-8.
Locals reflect a blend of American ancestry, with roots primarily in United States (4.4%), followed by English (27.1%), German (8.8%), and Scotch-Irish (0%) heritage. The town is identified by the ZIP code 96056.