Net Natural Increase Per 1,000 Residents, 2012
Net natural increase per 1,000 residents was 5.7 in Arizona; the national figure is not yet available. The number of deaths was greater than the number of births — net natural decrease — in Gila, La Paz, Mohave and Yavapai counties, which have high shares of older residents. In contrast, net natural increase per 1,000 residents exceeded 7.5 in Santa Cruz and Yuma counties, which have a youthful population. The figure was nearly as high in Maricopa County, but was well below the state average in Pima County.