Easter township represents an area within the Easter township subdivision of the Roberts County (South Dakota),
which is not part of any official city, town or other place of the Easter township subdivision.
This area is populated by approximatelly 152 people and occupies the area of 35 square miles - 1 square miles represent water areas.
Racial makeup of the population is : White (61.84%), American Indian and Alaska Native (34.21%) and Two or More races (3.95%).
The male part of the population has a median age of 41 and the “median female” is 40 years old.
Statistical data for the Easter township based on the 2010 U.S. Census