The district is located at the western banks of the River Weser between Bremen and the river's mouth. Several rivers cross the district from west to east, the largest of them being the Hunte, which runs through Oldenburg before entering Wesermarsch. In the north the Weser mouth and the Jade Bight (a bay off the North Sea) enclose the Butjadingen peninsula. Here the largest town of the district is located: Nordenham, lying opposite to Bremerhaven at the Weser mouth.
The coat of arms shows the red and yellow bars of the state of Oldenburg in its left half. In the bottom right a warrior is depicted, symbolizing the Frisian tribes which originally settled in the area. The ship in the top right is a cog, the typical trading ship of the area in medieval times. It symbolizes the long trading tradition at the mouth of the River Weser.