Harlington is one of the most southerly parishes in Mid Bedfordshire, covering an area of 713 hectares with an electorate of roughly 1,850. It is a hill top village in a rural setting, surrounded by Green Belt and the Chilterns AONB. It is centred on a church and village green, both of which are key features of the village and are in the Conservation Area.
The village is situated about 1.5 miles from J12 of the M1, 7 miles north of Luton and 10 miles south of Bedford.
There is a railway station which connects Harlington to Flitwick, Bedford, Leagrave, Luton, Luton Airport Parkway, Harpenden, St Albans, London, Gatwick Airport and Brighton.