Hamlin County is located in the state of South Dakota. With a land mass of 537 square miles, Hamlin County is one of the smaller counties in the state, while in terms of population it is near the bottom with 554 residents. Hamlin County's population density of suburban makes it one of the most largely populated areas in the state. The county's largest city is Castlewood, with a population of 1,450.

Hamlin County is one of the more prosperous regions in the state. The median income for Hamlin County residents is $33,815, putting the area in in the top half of all counties in South Dakota. Reflecting this, the average house value in Hamlin County is $52,845, slightly above the state average of $72,289.    Continued below...