West Michigan and Western Michigan are terms for an arbitrary region in the U.S. state of Michigan's Lower Peninsula. Most narrowly it refers to the Grand Rapids-Muskegon-Holland area, and more broadly to most of the region along the Lower Peninsula's Lake Michigan shoreline, but there is no official definition. Definition In general, "West Michigan" often refers to the area bounded by the cities of Muskegon (in the north), Grand Rapids (in the northeast), Kalamazoo–Battle Creek (in the southeast) and St. Joseph–Benton Harbor (in the southwest). However, definitions of the boundaries of the region vary widely; in some contexts, the term "West Michigan" is applied only to the counties of Allegan, Kent, Muskegon, and Ottawa, which together compose the Grand Rapids-Kentwood-Muskegon CSA. Other definitions include the Kalamazoo–Battle Creek and Benton Harbor–St. Joseph regions, which can be considered distinct regions or parts of other regions such as Michiana, Southern Michigan, or Southwest Michigan, the latter in the case of Benton Harbor–St. Joseph. The northern boundary of the region is also poorly defined; the population density, land use, economic and cultural character, and physical geography most often associated with West Michigan fades in northern Muskegon and Kent Counties, however areas as far north as Ludington and White Cloud may be included because of their close economic ties to the cities to the south. Other areas, such as Montcalm County in the northeast corner of the region, are transitional areas that straddle Michigan regions but are sometimes included for classification purposes. Greenville, in Montcalm County's southwest corner, is closely tied economically with Grand Rapids; however, the northeastern corner, around Vestaburg and Edmore, has historically more closely associated with the cities of Mount Pleasant and Alma, which are almost universally reckoned as part of Central Michigan. Geography See also List of Michigan state parks and Geography of Michigan. Counties in the area are part of the Roman Catholic Diocese of Grand Rapids or the Roman Catholic Diocese of Kalamazoo. In northwest Kent County is Fruit Ridge, which is a prime fruit-growing region; that accounts for 65% of all Michigan apple production. Municipalities The following table contains the largest municipalities of West Michigan according to the 2010 Census. This defines the region fairly broadly, but not at its most broadly; if Battle Creek were included, it would be ranked fourth. Five of the above cities, Wyoming, Kentwood, Portage, Norton Shores, and Walker, are former suburban townships