Lien township represents an area within the Lien township subdivision of the Roberts County (South Dakota),
which is not part of any official city, town or other place of the Lien township subdivision.
This area is populated by approximatelly 122 people and occupies the area of 49 square miles - 1 square miles represent water areas.
Racial makeup of the population is : White (95.08%), Two or More races (3.28%) and American Indian and Alaska Native (1.64%).
The male part of the population has a median age of 48 and the “median female” is 47 years old.
Statistical data for the Lien township based on the 2010 U.S. Census