NULL Of 254 counties in the Lone Star State, Hidalgo County is 18th in terms of its size (1,582 square miles). Hidalgo County is in Lower Rio Grande Valley Texas. Recent listings of equestrian property for sale in Hidalgo County, Texas, totals almost 1,000 acres and a combined market value of roughly $400,000. The most common type of land for sale by combined acreage in Hidalgo County is undeveloped land. Browse all Hidalgo 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 Hidalgo County is undeveloped land.