The place is six kilometers south of the core town of Ottersberg on the state road L 155.

The A1 runs 2.5 km to the north and the A 27 six kilometers to the south.

The origins of the place can be found in the colonization of the Hellweger Moor, which began at the end of the 17th century.

Posthausen consists of several street villages such as Allerdorf, Grasdorf, Hintzendorf, Schanzendorf, Stellenfelde, Mitteldorf, Giersdorf.

[3] Since it was founded as a small family business in 1910, the Dodenhof department store has developed into the largest shopping center in Northern Germany and thus also an important economic factor in the region.