List of counties in New Hampshire

This is a List of counties in New Hampshire. There are currently 10 in the  of. Five of the counties were created in 1769, when New Hampshire was still an English colony and not a state, during the first subdivision of the state into counties. The last counties created were and, in 1840. The majority of New Hampshire's counties were named for prominent British or American people or geographic locations and features. Only one county's name originates in a Native American language;, named for a Native American word meaning crooked and referring to a bend in the Connecticut River. The counties tend to be smaller in land area towards the southern end of the state, where New Hampshire population is concentrated, and larger in land area in the less populous north.

The FIPS county code is the five-digit Federal Information Processing Standard (FIPS) code which uniquely identifies counties and county equivalents in the United States. The three-digit number is unique to each individual county within a state, but to be unique within the entire United States, it must be prefixed by the state code. This means that, for example, while, is 001, ,  and ,  are also 001. To uniquely identify Belknap County, New Hampshire, one must use the state code of 33 plus the county code of 001; therefore, the unique nationwide identifier for Belknap County, New Hampshire is 33001. The links in the column are to the Census Bureau Info page for that county.