Irchester is a village and civil parish in North Northamptonshire, two miles (3 km) south-east of Wellingborough and two miles south-west of Rushden. The population of the village at the 2011 Census was 5,706 and estimated in 2019 at 5,767. Little Irchester and Knuston also lie in the parish.

North Northamptonshire is one of two local government districts in Northamptonshire, England. It is a unitary authority area forming about one half of the ceremonial county of Northamptonshire. It was created in 2021. Its council is based in Corby, the district's largest town. Other notable towns are Kettering, Wellingborough, Rushden, Raunds, Desborough, Rothwell, Irthlingborough, Thrapston and Oundle.