Of 10 counties in the state, Merrimack County ranks fourth by size (954 square miles). Merrimack County is in Central New Hampshire. The total value of roughly 1,000 acres of equestrian property recently listed for sale in Merrimack County, New Hampshire, was around $3 million. Browse all Merrimack 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 Merrimack County is residential property.