The purpose of this paper is to study the formation of various urban centers in Metropolitan Lima (Peru), on the basis of the Polycentric Model. Given the scarcity of empirical data, our approach has been based on the localization of workers as an indicator of spatial economic concentration.We have used georeferenced data of employment at the level of census tracts from the 2008 Economic Census and a combination of methodologies that has allowed us to estimate density functions. We have identified ten centers and classified them considering the degree of agglomeration and consolidation of  economics activities. Results confirm the hypothesis that Lima is a polycentric city.