The Commonwealth of San Andreas has 1 county, 3 cities, and 3 towns. All of the land in San Andreas is divided up among the cities and towns, and there are no "unincorporated" areas or population centers, or townships. San Andreas Legislature is the fundamental governing document of the Commonwealth of San Andreas, which is commonly referred to as the Penal Code.
Los Santos County is located in the Commonwealth of San Andreas, and most municipalities in Los Santos County have a town form of government; the remainder are cities. Many municipalities have their own police departments, and state laws delegate limited control over regulatory licenses to municipal governments. Municipal governments own most roads, and many use police officers to enforce the legislature on local roads within state parameters.