Balimo is situated slightly north of the Fly River, and is an inland settlement of about 4000 people.

The plain is a very humid environment, and has a stable tropical temperature of 27 to 32 degrees Celsius.

It shares an international boundary with the Papua province of Indonesia in the west and borders South Fly District in the south, and the North Fly District in the north.

The major mining economy of the North Fly has not benefited the residents of the Middle Fly District until recently with the establishment of the PNG Sustainable Development Program which now owns the BHP share of the Ok Tedi Mine.

Residents of this district have previously been involved in litigation against BHP for its environmental impact on their subsistence lifestyle.