[2] The church is sited in the north part of the village, known as Walpole St Andrew, 8 miles (13 km) west of King's Lynn, to the south of the A17 road.

[1] St Andrew's is constructed in brick with ashlar dressings.

To the left of this is a niche for a statue, and to the right is a chamber under a lean-to roof, which was probably an anchorite cell.

The bell openings have two lights, and the parapet is crenellated with corner pinnacles.

The south porch is gabled, and has an embattled parapet with corner pinnacles having crockets and finials.

At the east end of the nave are two octagonal rood turrets, each terminating in a spirelet.

The octagonal font dates from the 15th century; its bowl is carved with quatrefoils and shields.

[1] The stone of the arcades, the chancel step and the pulpit base is badly eroded.

[6] Set into the wall at the north entrance to the churchyard are two relocated corbels.