Of 10 counties in the state, Coos County is first in terms of its size (1,830 square miles). Coos County is in North New Hampshire. There is around 1,000 acres of timberland for sale in Coos County, New Hampshire, based on recent Land Network data. The combined market value of farmsand rural real estate for sale here is nearly $400,000. Browse all Coos County forest and timberland for sale on the Land Network to find the right timberland acreage for your commercial or individual investment needs. The most common type of land for sale by combined acreage in Coos County is residential property.