* We've used the 41.67% increase in Seattle's median rental rate (calculated as a 12-month average) between 2010 and 2017, to projected the potential impact of Amazon on rental rates in 16 of the 20 cities being considered. For a more comprehensive picture of the housing market in each city, we've pulled data by CBSA; New York City and Newark, as well as Washington, D.C., Montgomery County, Md., and Northern Virginia, are represented as one market. This accounts for 16 of the 20 cities on the shortlist, but is representative of the candidate cities as a whole. Source: Zillow Rent Index (ZRI)