The Canadian Pacific Railway (CPR) rail branch line helped to settle this community. Sedley incorporated as a village on August 3, 1907.[6] It was named for Sedley Blanchard, a lawyer.[7]
In the 2021 Census of Population conducted by Statistics Canada, Sedley had a population of 367 living in 126 of its 137 total private dwellings, a change of 2.5% from its 2016 population of 358. With a land area of 1.34 km2 (0.52 sq mi), it had a population density of 273.9/km2 (709.3/sq mi) in 2021.[10]
In the 2016 Census of Population, the Village of Sedley recorded a population of 358 living in 136 of its 136 total private dwellings, a 5.9% change from its 2011 population of 337. With a land area of 1.33 km2 (0.51 sq mi), it had a population density of 269.2/km2 (697.2/sq mi) in 2016.[11]
Title Outline history of Our Lady of Grace Church, Sedley, Saskatchewan : On the occasion of its 75th anniversary Author Baker, Leonard, Mrs Published Weyburn, Sask. : Weyburn Review Ltd., 1981