1837-Michigan is admitted as the 26th state in the union. At this point it organizes into 38 counties. There are 15 villages, at this time, and 1 city (Detroit).
1909- Home Rule City Act (Public Act 279 of 1909) is enacted by the Michigan Legislature. It sets the standards for how a new city can become incorporated, and develop its own government by adopting a city charter.
1930-Almost a century after Michigan was adopted into the Union, Michigan has grown to 83 counties, 1271 townships, 121 cities, and 338 villages
1931-Municipal Planning Act (PA 285 of 1931) creates an authority for planning in villages and cities (repealed in 2008)
1932- The McNitt Act abolished the township road system and consolidated under the county road system.
1941- PA 250 of 1941 is passed as the first major urban redevelopment legislation in Michigan
1945-County Planning Act (PA 282 of1945) authorizes the creation of County Planning Commissions (repealed in 2008)
1959-Township Planning Act (PA 168 of 1959) established to create township commissions (repealed 2008)
1967-Subdivision Control Act regulates land planning and land division to promote organized use of land and create suitable building sights
1989-Metropolitan Council Act passed to allow local governments to create metropolitan councils with the ability to levy a property tax
2001-Open zoning becomes required in many communities through the amending of zoning enabling acts
2008- The Michigan Planning Enabling Act (PA 33 of 2008) repeals the Municipal Planning Act, County Planning Act, and Township Planning Act to outline the laws for planning in all counties, cities, townships, and villages in Michigan.