Since 2002, the UCSD Edom Lowlands Regional Archaeology Project (ELRAP) has carried out focused excavations and surveys in the Faynan region of southern Jordan aimed at studying the rise and collapse of complex societies during the Iron Age (ca. 1200 – 500 BCE). A central pillar of the excavations has been the application of high precision radiocarbon dating to stratified archaeological sequences recovered in the region. A wide variety of Iron Age sites have been sampled and dated including a fortress, one of the earliest factory level copper production sites in the southern Levant (Khirbat en-Nahas), two secondary copper production sites, a watch-tower complex, cemetery, and tumuli. New radiocarbon dates obtained from our 2009 field work are analyzed here in conjunction with the full suite of radiocarbon assays now available for southern Jordan. Coupled with the new samples, there are now c. 140 dates available from Iron Age sites in this region known from the Hebrew Bible (Old Testament) as Edom. In this paper, Bayesian analyses are carried out on the complete suite of dates to shed light of the evolution of Iron Age societies in this part of the Southern Levant.