Alamosa County is in South Central Colorado. Of the 64 counties in the Mile High State, Alamosa County is 53rd in terms of its size (462,905 acres). The most common type of land for sale by combined acreage in Alamosa County is residential property. Browse all waterfront property for sale in Alamosa County on the Land Network to find the marina, lakefront and other recreational property that meets your needs, from waterside land perfect as a retirement investment to existing residential waterfront land and property for hunting, fishing and other outdoor-recreation pursuits!