Timber Lake, SD
Timber Lake is a city in Dewey County, South Dakota, United States. The population was 443 at the 2010 census. It is the county seat of Dewey County.
Timber Lake is located at 45°25′43″N 101°4′29″W / 45.42861°N 101.07472°W / 45.42861; -101.07472 (45.428682, -101.074606).
According to the United States Census Bureau, the city has a total area of 0.4 square miles (1.1 km²), all of it land.