Beaver Dam is an unincorporated community and census-designated place in Mohave County, Arizona, United States, that is located in the Arizona Strip region and was settled on December 2, 1863. It is located along Interstate 15 approximately 10 miles northeast of Mesquite, Nevada. It is located in the 86432 ZIP Code. It had a population of 1,552 as of the 2020 census, a decline from the figure of 1,962 tabulated in 2010.