Of 10 counties in the Granite State, Hillsborough County is fifth in terms of its size (892 square miles). Hillsborough County is in South New Hampshire. Hillsborough County, New Hampshire, has about 1,000 acres of equestrian property for sale based on recent Land Network data. The combined market value of farmsand rural real estate for sale here was around $900,000. Browse all Hillsborough 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 Hillsborough County is residential property.