Of 10 counties in the White Mountain State, Rockingham County ranks sixth in terms of size (795 square miles). Rockingham County is in South New Hampshire. There is around 1,000 acres of farms for sale in New Hampshire's Rockingham County based on recent Land Network data. The combined market value of land for sale here is almost $500,000. Browse all Rockingham County farms for sale on the Land Network to find the farm, cattle operation, hobby farm or other farm property that's right for your future commercial or lifestyle needs. The most common type of land for sale by combined acreage in Rockingham County is residential property.