Printable Michigan zip code maps are available online for free from UnitedStatesZipCodes.org. This website provides printable maps for all 50 states, Puerto Rico and Washington, D.C. The printable Michigan zip code map is 3.03 megabytes and denotes large towns and major roads as well as zip code regions.
Zip codes were created to make delivering mail easier, so zip code boundaries won't necessarily match with existing town, county, or state boundaries. Some zip codes will be as small as a city block in densely populated areas, in which case using a zip code map is not the most reliable method for matching an address to a zip code. UnitedStatesZipCodes.org provides custom zip code maps so users can create a map centered around a specific area.