Settlers first homesteaded in the Semans area as early as 1904. Semans, named for the wife of a railroad official, was one in the alphabetical sequence of towns on the Grand Trunk Railway line between Winnipeg, Manitoba and Saskatoon, Saskatchewan. A picture of the first station shows the spelling as "Semons". The first sports day was held on July 1, 1908. The railroad station and first grain elevator were built by the fall of 1908. In a little more than a year, local businesses could supply almost all necessary commodities and the population was 48 people. The first open air rink was in use by 1907. On October 28, 1908, the Semans Board of Trade sent correspondence regarding the organization of Semans under the Village Act of 1908. A petition was sent on November 4, 1908, signed by the businesses. Semans incorporated as a village on December 14, 1908.[4]
Semans celebrated 100 years as a village with a centennial anniversary homecoming in July 2008.
In the 2021 Census of Population conducted by Statistics Canada, Semans had a population of 180 living in 93 of its 113 total private dwellings, a change of -8.2% from its 2016 population of 196. With a land area of 1.08 km2 (0.42 sq mi), it had a population density of 166.7/km2 (431.7/sq mi) in 2021.[7]
In the 2016 Census of Population, the Village of Semans recorded a population of 196 living in 103 of its 137 total private dwellings, a -4.1% change from its 2011 population of 204. With a land area of 1.14 km2 (0.44 sq mi), it had a population density of 171.9/km2 (445.3/sq mi) in 2016.[8]