Yava is a populated place situated in Yavapai County, Arizona, United States. It has an estimated elevation of 3,514 feet above sea level. The local post office was created from a petition by the local residents in 1916, and the name of the post office was created from the first four letters of Yavapai, the name of the county, by William W. Davis, the first postm…Yava is a populated place situated in Yavapai County, Arizona, United States. It has an estimated elevation of 3,514 feet above sea level. The local post office was created from a petition by the local residents in 1916, and the name of the post office was created from the first four letters of Yavapai, the name of the county, by William W. Davis, the first postmaster. The post office was closed in 1954.