Custer has a total area of about 7 sq. kms., located at an elevated height of about 5316 ft above the sea level. It is not only located in the County of Custer but also serves as the County seat of Custer. Mining is an important part of the local economic activity in the region. There is also a rehabilitation centers and many monuments, parks and memorials in the town. These help in the growth of the local economy. There is a local radio station and it boosts the growth of the local media sector. It also brings economic benefits to the locals. Some inhabitants are also engaged with the growing retail sector.