Pima County is blessed with a rich and varying record of human settlement over the 11,000 years representing prehistoric, Spanish Colonial, and Mexican-American influences in our history. The County's archaeological site is the building of structure with traditional cultural values and historic landscapes are all nonrenewable cultural resources.

The Land Use Plan was originally adopted on May 2, 1989, and an updated version was adopted on August 13, 1990. This edition of the plan has been updated to reflect changing growth patterns, population projections, annexations and other changes to the planning area since the last adoption.