Horrocks is a lunar impact crater located entirely within the eroded northeast rim of the much larger walled plain Hipparchus.

[1][2] To the south of Horrocks are the craters Halley and Hind, Rhaeticus is to the north, and Pickering to the northeast.

The inner wall is slumped, particularly along the northwest where it forms a heap of talus.

The interior floor is uneven, and it has a central mountain and hills.

[2] By convention these features are identified on lunar maps by placing the letter on the side of the crater midpoint that is closest to Horrocks.