Of 21 counties in the state, Monmouth County ranks fifth in terms of size (665 square miles). Monmouth County is in Central New Jersey. The total value of almost 1,000 acres of horse farms recently listed for sale in New Jersey's Monmouth County was around $1 million. Browse all Monmouth 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 Monmouth County is house.