Zoning district classifications vary by each municipality. In Ann Arbor for example, the following zoning district classifications are used for Single-Family Dwelling.

An overall map of local governments in Washtenaw County is available from the eWashtenaw Website.
We've also provided the links below for specific zoning ordinances and maps for the Washtenaw County Municipalities.

For Municipalities outside Washtenaw County, please visit:http://www.municode.com/Library/ClientListing.aspx?stateID=22