Ust-Yeniseisky district was located in the south-west of the Taymyr Dolgan-Nenets AO. Along with the three other districts of the former okrug after they were merged into one, it became a part of the Taymyr Dolgan-Nenets District of Krasnoyarsk Krai. As its name suggests, its territory encompassed the mouth of the Yenisei River.
