The township comprises the communities of Admaston, Balsam Hill, Belangers Corners, Bromley, Bulgers Corners, Connaught, Douglas, Ferguslea, Fremo Corners, Kellys Corner, Martins Corner, McDougall, Moores Lake, Mount St. Patrick, Northcote, Oakgrove, Osceola, Payne, Pine Valley, Renfrew Junction, Rosebank, Shamrock, and Wolftown.
When the post office was established in 1854, Scottish settlers chose the name Douglas after a town in Lanarkshire, Scotland.
The town of Douglas is the third of five chutes along the Bonnechere River. The others being Castleford, Renfrew, Fourth Chute and Eganville. The chutes were used for moving timber past rapids and waterfalls; Douglas had a 21-foot (3.4 m) waterfall over which log drivers had to shepherd their timber.
In the 2021 Census of Population conducted by Statistics Canada, Admaston/Bromley had a population of 2,995 living in 1,136 of its 1,305 total private dwellings, a change of 2% from its 2016 population of 2,935. With a land area of 519.59 km2 (200.61 sq mi), it had a population density of 5.8/km2 (14.9/sq mi) in 2021.[2]
^"Origin of Place Names in District: Admaston". The Ottawa Evening Citizen. No. 115. Ottawa, Canada. 30 October 1937. p. 19. Retrieved 16 August 2015. Admaston in Renfrew county was named after a village in Staffordshire, England.
^ ab"1971 Census of Canada - Population Census Subdivisions (Historical)". Catalogue 92-702 Vol I, part 1 (Bulletin 1.1-2). Statistics Canada: 76, 139. July 1973.