The New Hampshire House of Representatives is the lower house in the New Hampshire General Court, the bicameral legislature of the state of New Hampshire. The House of Representatives consists of 400 members coming from 203 legislative districts across the state, created from divisions of the state's counties. On average, each legislator represents about 3,300 residents, which is the smallest lower house representative-to-population ratio in the country.

An electoral district, also known as an election district, legislative district, voting district, constituency, riding, ward, division, electorate, or (election) precinct, is a subdivision of a larger state created to provide its population with representation in the larger state's constituency. That body, or the state's constitution or a body established for that purpose, determines each district's boundaries and whether each will be represented by a single member or multiple members. Generally, only voters (constituents) who reside within the district are permitted to vote in an election held there. District representatives may be elected by a first-past-the-post system, a proportional representative system, or another voting method. They may be selected by a direct election under universal suffrage, an indirect election, or another form of suffrage.