Monroe County History

On the lake plain of the prehistoric waters of Lake Iroquois, is the watershed for a vast network of sparkling creeks draining northwards into Lake Ontario. Here was located the port city of the Genesee Valley, at Charlotte. A series of three waterfalls at Rochester once impeded navigation, but provided abundant power for many mills sites along the banks.
Visit the U.S. Census Website for an array of demographic information.
U.S. Census information
Your link for the official Monroe County Website.