Municipal and county laws are generally called ordinances and are increasingly online.
Useful resources for locating local legislation and/or laws:
Still have not found the wanted information. Check libraries, historical societies, and associations for locally held resources, both web and print. Contact municipal and county officials such as the Clerk of Courts, etc. Be flexible when searching for an ordinance.
Local Government Law in a Nutshell. 5th edition. David J. McCarthy, Jr. and Laurie Reynolds. St. Paul, Minnesota: Thomas West, 2003. Source for local government law. Covers such topics local government limitations, resolution of power conflicts and challenges, formation of the local government, boundary changes, allocation and delegation of functions, elections, regulation of land usage, revenues, etc.