Of 10 counties in the state, Merrimack County ranks fourth by size (954 square miles). Merrimack County is in Central New Hampshire. Merrimack County, New Hampshire, has about 1,000 acres of horse properties for sale based on recent Land Network data. The combined market value of land and rural real estate for sale here was $800,000. 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.