Desmet, KlausFafchamps, MarcelUniversidad Carlos III de Madrid. Departamento de Economía2010-03-112010-03-112000-122340-5031https://hdl.handle.net/10016/7252This paper studies the recent trends in the spatial distribution of economic activity in the United States. Using county-level employment data for 13 sector -which cover the entire economy- we apply semi-parametric techniques to estimate how agglometarion and congestion effects have changed between 1972 and 1992. Non-service sectors are found to be spreading out and moving away from centers of high economic activity to areas 20 to 60 kilometers away; service sectors, on the contrary, are increasingly concentrating in areas of high economic activity by attracting jobs from the surrounding 20 kilometers.application/pdfengAtribución-NoComercial-SinDerivadas 3.0 EspañaEconomic geographySpatial externalitiesU.S. countiesworking paperEconomíaopen access