The Urban Districts of Baldock, Hitchin, Letchworth, Royston, and Stevenage;
The Rural Districts of Hitchin, and Welwyn; and
Parts of the Rural Districts of Braughing and Hertford.[6]
The constituency had included a part of the Urban District of Welwyn Garden City, which had been formed as a separate local authority in 1927, and this was now transferred to St Albans. Other nominal changes as a result of the reorganisation of local authorities.
The Urban Districts of Baldock, Hitchin, Letchworth, Royston, and Stevenage;
The Rural District of Hitchin;
The Rural District of Braughing parishes of Anstey, Ardeley, Aspenden, Broadfield, Buckland, Buntingford, Cottered, Hormead, Meesden, Throcking, Westmilll, and Wyddiall; and
The Rural District of Hertford parishes of Aston, Bennington, Datchworth, Sacombe, Walkern, and Watton-at-Stone.[7]
The Rural District of Welwyn was transferred to St Albans.
The part of the Rural District of Braughing was transferred to the new constituency of East Hertfordshire, and the part of the Rural District of Hertford was transferred to Hertford.
The District of North Hertfordshire wards of: Cadwell; Chesfield; Hitchin Bearton; Hitchin Highbury; Hitchin Oughton; Hitchin Priory; Hitchin Walsworth; Hitchwood, Offa and Hoo; and Kimpton - transferred from the abolished constituency of Hitchin and Harpenden.[9]
Following a local government boundary review which came into effect in May 2023,[10][11] the part in Central Bedfordshire now comprises the following wards from the 2024 general election:
The Hitchin parliamentary constituency did not exist when the 2019 general election was held. The following is a projection of what the result of the 2019 general election might have looked like in the Hitchin parliamentary constituency if it had existed.
Another General Election was required to take place before the end of 1915. The political parties had been making preparations for an election to take place and by the July 1914, the following candidates had been selected;
General Election 1939–40:
Another General Election was required to take place before the end of 1940. The political parties had been making preparations for an election to take place from 1939 and by the end of this year, the following candidates had been selected;
^Great Britain, Incorporated Council of Law Reporting for England and Wales. The public general acts. unknown library. Proprietors of the Law Journal Reports, 1884.
^ abcCraig, Fred W. S. (1972). Boundaries of parliamentary constituencies 1885–1972;. Chichester: Political Reference Publications. ISBN0900178094. OCLC539011.