Counties in Arizona

• Apache (33 historic properties)
• Cochise (80 historic properties)
• Coconino (155 historic properties)
• Gila (51 historic properties)
• Graham (34 historic properties)
• Greenlee (10 historic properties)
• La Paz (8 historic properties)
• Maricopa (384 historic properties)

• Mohave (68 historic properties)
• Navajo (56 historic properties)
• Pima (167 historic properties)
• Pinal (107 historic properties)
• Santa Cruz (51 historic properties)
• Yavapai (132 historic properties)
• Yuma (59 historic properties)