delÂ·eÂ·teÂ·riÂ·ous. adj. Having a harmful effect; injurious: the deleterious effects of smoking.
Portage Info. Portage, Michigan is located in Kalamazoo County. Zip codes in Portage, MI include 49081, 49002, and 49024. The median home price in Portage is $188,900 which is roughly $101/per square foot. More Portage information.
WEST MICHIGAN REGIONAL MAP. Located halfway up the West Michigan coastline, this map encompasses an area from Manistee, 30 miles north of Ludington--to Shelby, 30 miles south of Ludington--along the US-31 highway. Within this region are the villages of Hart, Pentwater, and Silver Lake. Driving on US-10 from the east, you'll go through Baldwin, Custer, and Scottville. Or arrive by water via the S.S. Badger car ferry, which sails May-October across Lake Michigan to Manitowoc, Wisconsin.