The HX1 postcode covers an area which is mainly occupied by the city of Halifax in West Yorkshire, England. It lies to the west of nearby Bradford. The postcode area is served by the local newspaper – The Halifax Courier – which has been in circulation since 1854.

The census collection is designed so that each group of postcodes should contain at least 100 people (50 in Scotland). The HX1 postcode area is located in the Halifax postcode town region, within the county of West Yorkshire, and contains a total of 1572 individual postcodes. The area is home to a number of well-known landmarks, including the Piece Hall – an 18th-century cloth hall which is a popular tourist attraction. Other areas of importance within the HX1 include the pubs and clubs around Halifax town centre, the pioneering Piece Hall Green shopping centres, and the 19th century Dean Clough Industrial Museum.Residents of HX1 are served by a number of leisure facilities, including Copley Leisure Centre which boasts a gym, swimming pool, sauna, steam room, sports hall, and squash courts. The 10-acre Victoria Park is also popular, and features two ponds, a miniature railway, and a children's adventure playground. There are several independent supermarkets in the postcode area, as well as art galleries, museums, and independent shops.

HX1 is a modern postal area in the UK, first introduced in 1997 after the towns in the Halifax borough were reorganized. It includes both urban and rural parts of the borough, and it is 17 miles southwest of the city of Leeds. The information on housing, people, culture, employment and education that is displayed about Trinity Road, Halifax, HX1 2RG is based on the last census performed in the UK in 2021. Combining the whole postcode region, 18% of people in HX1 are classed as having an AB social grade, (i.e. 'white-collar' middle-upper class), compared to 27% across the UK.This does not mean that the people of HX1 are poorer than other areas, but it may give an indication that there are areas of deprivation. For Scotland, 2011 data is shown (update coming soon, the Scottish census was delayed by a year unlike the rest of the UK).