20240808 06004500 1.0 TRUE US Congressional Districts The US Congressional Districts layer contains polygons for US Congressional Districts. The source for the information in this layer is the Los Angeles County Registrar/Recorder's Precinct Information File (PIF), The boundries are based on the 2010 Census as provided by the California Secretary of State in 2011. Los Angeles County - Registrar-Recorder/County Clerk Geographic Information Systems Section _GIS@rrcc.lacounty.gov