Of 44 counties in the Gem State, Valley County ranks fifth by size (3,733 square miles). Valley County is in Southwestern Idaho. Recent listings of horse properties for sale in Valley County, Idaho, totals around 1,000 acres and a combined market value of about $3 million. The most common type of land for sale by combined acreage in Valley County is undeveloped land. Browse all Valley County horse farms for sale on the Land Network to find the equestrian property that's right for your future needs, whether you're a horse breeder, equestrian business or simply horse lover looking for stable facilities, grooming pens or grazing pasture for your own horses. The most common type of land for sale by combined acreage in Valley County is undeveloped land.