City of New Orleans commercial and residential addresses. ESRI shapefile format, GIS software required for viewing geometry (http://www.esri.com/software/arcgis/arcreader/). Tabular data (DBF), included as part of the shapefile, are viewable in Excel. Scheduled update: weekly
The Los Angeles County Department of Public Works provides the most current shapefiles representing city boundaries within Los Angeles County, and the shapefiles available in this download includes polygons and lines.