This survey maps the new American employment landscape, using zip-code employment files to map the location of jobs in the 100 largest U.S. metropolitan areas. Metropolitan areas are divided into four categories, based on whether they have tightly-packed central business districts, a very decentralized pattern of employment, or a combination of the two. The survey also highlights the characteristics of a metropolitan area--such as region, age, and political fragmentation--that are associated with employment decentralization.