An interactive Factory Farm Map, a project of Food & Water Watch, gives the details on livestock operations down to the county level. Click on a state in the map and choose a county to learn the number of animals—whether cattle, dairy, hogs, broilers or layers—and the average per site over several years. The map has a key to show where the animal density levels are highest and you can filter the information for types of livestock. Below the map, you can choose a state for charts, rankings and facts specific to that area.