Coös County, New Hampshire Genealogy

Coos County was separated from Grafton County, New Hampshire and organized at Berlin December 24, 1803, The name Coos may derive from an Algonquian Indian word meaning crooked, a name for the Connecticut River.

In the 1810 Federal Census there were 3,991 residents; by 1870 there were nearly 15,000, The estimated population in 2004 was 33,511.

Coos County towns include: Berlin, Carroll, Clarksville, Colebrook, Columbia, Dalton, Dixville Notch, Dummer, Errol, Gorham, Jefferson, Lancaster, Milan, Millsfield, Northumberland, Pittsburg, Randolph, Shelburne, Stark, Stewartstown, Stratford, Whitefield.