It is situated about 12 miles north of Portsmouth and six miles south of Petersfield and sits to the west of the main A3 road, just north of where the A3(M) (Motorway) ends. It is in the far east of the county of Hampshire.
Clanfield is overlooked from the other side of the A3 road by Windmill Hill and Chalton Windmill which stands at 193 metres above sea level. Many references in Clanfield feature the windmill, such as Windmill Garage.
The population of Clanfield is c. 4500 (estimated 2002).
Clanfield consists of two parts, "Old" Clanfield and "New" Clanfield. Old Clanfield has been around for roughly 250 years and New Clanfield about 30 years. Starting with Old Clanfield, the smaller part, but has more takeaway restaurants than most similar sized communities. It is on (next to) a main road which means it is very easy to access and buses run through it frequently. It also has a skatepark and children's play area in Peel Park. New Clanfield is slightly larger than its elder sibling, yet still much smaller than the neighbouring village of Horndean. However, the New Clanfield shopping facilities contain a newsagent, greengrocer, Chinese takeaway, butcher, optician, hardware store, Costcutter, two hairdressers, and the Co-Op as well as an Indian Restaurant, and, in a recent redevelopment, a wine-bar & Pharmacy.
Clanfield is a popular area for walkers, with Queen Elizabeth Country Park being next to the village. The old village also has a recently restored pond, a thatched village well, and the church of St. James.
There are two schools. Petersgate Infant in Clanfield and Clanfield Junior School in old Clanfield.