1885–1918: The Sessional Divisions of Bellingham, Coquetdale West, Haltwhistle, and Tynedale. The contents of the county division were defined by the
Redistribution of Seats Act 1885.
1918–1950: The
Rural Districts of
Bellingham,
Haltwhistle,
Hexham, and the part of the Rural District of
Castle Ward which consists of the civil parishes of Bitchfield, Black Heddon, Capheaton, Cheeseburn Grange, East Matfen, Fenwick, Harlow Hill, Hawkwell, Heugh, Ingoe, Kearsley, Kirkheaton, Nesbitt, Ouston, Ryal, Wallridge and West Matfen, and the
Urban Districts of
Hexham and
Prudhoe. Rothbury was transferred to
Berwick-upon-Tweed.
1950–1974: The Urban Districts of Hexham and Prudhoe, and the Rural Districts of Bellingham, Castle Ward, Haltwhistle, Hexham. The remainder of Castle Ward was transferred from the abolished constituency of
Wansbeck.
1974–1983: The urban districts of Hexham and Prudhoe, and the rural districts of Bellingham, Castle Ward, Haltwhistle, and Hexham. The boundary with
Blyth was slightly amended to take account of changes to local government boundaries.
1983–2010: The District of
Tynedale, and the following wards of the Borough of
Castle Morpeth:
Heddon-on-the-Wall,
Ponteland East, Ponteland North, Ponteland South, Ponteland West, Stamfordham, Stannington, and Whalton. Contents changed following reorganisation of local authorities in 1974. The area of the former rural district of Castle Ward which was now part of the
City of Newcastle upon Tyne in
Tyne and Wear was now included in
Newcastle upon Tyne North.
2010–2024: The District of
Tynedale, and the following wards of the Borough of
Castle Morpeth:
Heddon-on-the-Wall,
Ponteland East, Ponteland North, Ponteland South, Ponteland West, Stamfordham, and Stannington. In the fifth periodic boundary review of parliamentary representation in Northumberland, which came into effect for the
2010 general election, the contents of the existing Hexham constituency were unchanged except for losing the southern part of the Hartburn ward to
Berwick-upon-Tweed, and the
Boundary Commission for England made only minor changes in Northumberland to take account of ward boundary changes. In 2009, a further government reorganisation resulted in the abolition of all local government boroughs and districts in Northumberland and the establishment of the county as a
unitary authority. However, this did not affect the constituency boundaries.
2024–present: The City of Newcastle upon Tyne ward of Callerton & Throckley, and the County of Northumberland electoral divisions of Bellingham, Bywell, Corbridge, Haltwhistle, Haydon and Hadrian, Hexham Central with Acomb, Hexham East, Hexham West, Humshaugh, Longhorsley, Ponteland East and Stannington, Ponteland North, Ponteland South with Heddon, Ponteland West, Prudhoe North, Prudhoe South, South Tynedale, and Stocksfield and Broomhaugh. :
Expanded to bring the electorate within the permitted range by adding the Newcastle ward of Callerton & Throckley. The boundaries within Northumberland were adjusted slightly to take account of the reorganisation of local authority electoral divisions. == Members of Parliament ==