|Municipal district||County of Two Hills No. 21|
|June 25, 1930|
|Dissolved||September 1, 2010|
|• Governing Body||County of Two Hills No. 21 Council|
|• Reeve||Allan Sayler|
|• Total||0.38 km2 (0.15 sq mi)|
|Elevation||617 m (2,024 ft)|
|• Density||260.0/km2 (673/sq mi)|
|Time zone||UTC-7 (MST)|
As a designated place in the 2016 Census of Population conducted by Statistics Canada, Derwent recorded a population of 85 living in 47 of its 68 total private dwellings, a change of −15% from its 2011 population of 100. With a land area of 0.37 km2 (0.14 sq mi), it had a population density of 229.7/km2 (595.0/sq mi) in 2016.
In the 2011 Census, Derwent had a population of 100 living in 53 of its 75 total dwellings, a -14.5% change from its 2006 population of 117. With a land area of 0.38 km2 (0.15 sq mi), it had a population density of 260/km2 (700/sq mi) in 2011.
The population of the Hamlet of Derwent according to its 2009 municipal census is 125.
Established in 1928 when the Canadian Pacific Railway opened a rail line through the region, it was named after Derwent, Derbyshire, England. Prior to this name, the community was briefly known as Monkman (purportedly after the temporary stay in the community of Albert Monkman, an important member of the 1885 Metis Provisional Government headed by Louis Riel) and, before that, the Native Americans of the region referred to it as Penguix. The population peaked at 301 in 1959, but declined rapidly after the construction of the bridge to Elk Point and the closure of the local grain elevator. The subsequent abandonment of the Lloydminster to Starr rail line in 2005 - 2007 signaled the final chapter in Derwent's rail access. Only two new homes have been built since the 1980s and the last business building permit issued was in 2001.
- Government of Alberta (1930-06-25). "Organization of the Village of New Sarepta (The Alberta Gazette)" (PDF). Retrieved 2010-08-31.
- Alberta Queen's Printer. "Order in Council (O.C.) 229/2010". Retrieved 2010-07-15.
- "Census Profile - Derwent, Village, Alberta (Dissolved census subdivision)". Statistics Canada. 2012-11-02. Retrieved 2012-12-02.
- "Population and dwelling counts, for Canada, provinces and territories, and designated places, 2016 and 2011 censuses – 100% data (Alberta)". Statistics Canada. February 8, 2017. Retrieved February 13, 2017.
- Alberta Municipal Affairs (2009-09-15). "Alberta 2009 Official Population List" (PDF). Retrieved 2010-09-12.
- University of Alberta. "Derwent - History". Retrieved 2007-06-21.
- Government of Alberta. "Municipal Populations 1913-2006". Retrieved 2007-06-21.
- Alberta First. "Derwent - Community Profile". Retrieved 2007-06-21.