Popluation of Placer County California and surrounding areas. This dataset contains Census counts from 2000 and 2010. It also conatins estimated 2016 population (Source: ESRI, 2016) and population projections for 2021 (source: ESRI, 2016). This dataset is aggregated to the cenusus tract level. This layer is presented in the WGS84 coordinate system for web display purposes. Downloadable data are provided in native coordinate system or projection.