Of 64 counties in the state, Alamosa County ranks 53rd by size (723 square miles). Alamosa County is in South Central Colorado. There is nearly 1,000 acres of riverfront land for sale in Alamosa County, Colorado, based on recent Land Network data. The combined market value of ranches, farms, hunting land and other rural land and acreage for sale here is about $1 million. 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! The most common type of land for sale by combined acreage in Alamosa County is undeveloped land.