All maps use the same grid, showing cities and towns in Los Angeles County, as well as boundary lines of the adjoining counties and some features and delineations of cities surrounding LA County (within the map's borders). A legend of various sized dots is given for each map, from the largest dot representing the highest population figure per dot to the smallest dot representing the smallest population figure this number varies per map. In rare cases, some population figures are represented by dots for some of the adjoining (non-LA County) cities